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PART I I.100-Series Recommendations GENERAL STRUCTURE |
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MONTAGE: PAGE 2 = PAGE BLANCHE 2 Fascicle III.7 -- Rec. I.110
SECTION 1
FRAME OF I-SERIES RECOMMENDATIONS
TERMINOLOGY
PREAMBLE AND GENERAL STRUCTURE OF THE I-SERIES RECOMMENDATIONS
FOR THE INTEGRATED SERVICES DIGITAL NETWORK (ISDN)
(Malaga-Torremolinos, 1984; amended at Melbourne, 1988)
1.1 Introduction
An ISDN is a network, in general evolving from a telephony Integrated Digital Network (IDN), that provides end-to-end digital connectivity to support a wide range of services, including voice and non-voice services, to which users have access by a limited set of standard multi-purpose user-network interfaces.
This concept requires a family of CCITT Recommendations.
The I-Series Recommendations will provide principles and guidelines on the ISDN concept, as well as a detailed specification of the user-network and internetwork interfaces. They will further contain suitable references so that the detailed Recommendations on specific elements within the network can continue to be developed in the appropriate Recommendation series.
Figure 1/I.110 produces a broad outline of the structure of the I-Series of Recommendations and their relationship to other Recommendations. As shown in the Figure, the current structure of the I-Series
documentation is subdivided into seven major parts. Other I-Series documents may be added as the need arises. In addition, to support the implementation of the ISDN concepts, Recommendations have been produced and others will be produced in other Series by the appropriate specialist group (see Recommendation I.111).
1.2 Basis of the I-Series approach
In order to standardize all necessary aspects of ISDN the CCITT has divided the subject matter into a number of distinct (but obviously related) areas (see Figure 2/I.110). Three of these areas are the following:
1) Services (I.200-Series of Recommendations);
2) Network aspects (I.300-Series of Recommendations);
3) User-network access and interfaces (I.400-Series of Recommendations).
Network aspects are further supported by other Recommendations both inside and outside the I-Series.
The I-Series Recommendations are directed at the following principles:
Fascicle III.7 -- Rec. I.110 3
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a) b) |
the standardization of services offered to subscribers, so as to enable services to be internationally the standardization of user-network interfaces, so as to enable terminal equipment to be portable [and to |
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assist in a)]; c) |
the standardization of network capabilities to the degree necessary to allow user-to-network and |
network-to-network interworking, so as to achieve a) and b) above.
4 Fascicle III.7 -- Rec. I.110
Figure 1/I.110, p.
The distinction that has been made in this approach between services and network capabilities is perhaps the most important. In the past, each service which was a candidate for standardization was treated in isolation and the necessary standards developed. For the ISDN, a wide range of services has to be considered in a coordinated manner. In addition, in the past there has not been a conscious decision to separate the definition of standards required for services from the definition of the standards for the network capabilities to support these services.
The approach, in the development of the I-Series, has been, first, to establish the broad concepts of the two areas of standards, secondly, to uniquely define these two concepts, and thirdly, to show the relationship between them.
The fourth area shown in Figure 2/I.110, is user equipment. The I-Series includes reference configurations which identify key functional groupings and their physical relationship. The interfaces with the network are explicitly defined; however, the I-Series does not provide a detailed description of any specific terminal element.
Figure 3/I.110 illustrates the relationship between services and network capability areas from a first-order viewpoint; nevertheless the relationship can be seen to be recursive. The figure shows that the driving forces are:
a) what the user wants or is prepared to purchase;
b) the availability of the necessary technology;
c) the economics of developing and enhancing services and the network capabilities.
Fascicle III.7 -- Rec. I.110 5
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Figure 2/I.110, p. Figure 3/I.110, p. |
Part I -- General structure -- I.100-Series
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SECTION 1 -- Frame of I-Series Recommendations -- Terminology I.110 Preamble and general structure of the I-Series Recommendations I.111 Relationship with other Recommendations relevant to ISDNs I.112 Vocabulary of terms for ISDNs 6 Fascicle III.7 -- Rec. I.110 |
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I.113 Vocabulary of terms for broadband aspects of ISDNs SECTION 2 -- Description of ISDNs I.120 Integrated Service Digital Networks (ISDNs) I.121 Broadband aspects of ISDNs I.122 Framework for providing additional packet mode services |
Fascicle III.7 -- Rec. I.110 7
SECTION 3 -- General modelling methods
I.130 The method for the characterization of telecommunication services supported by an ISDN and network capabilities of an ISDN
SECTION 4 -- Telecommunication network and science attributes
I.140 Attribute technique for the characterization of telecommunication services supported by an ISDN and network capabilities of an ISDN
I.141 ISDN charging capability attributes
Part II -- Service capabilities -- I.200-Series
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I.200 Guidance to the I.200-Series of Recommendations SECTION 1 -- General aspects of services in ISDN I.210 Principles of telecommunication services supported by an |
by an ISDN and the means to describe them |
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SECTION 2 -- Common aspects of services in ISDN I.220 Common dynamic description of basic telecommunication |
services |
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I.221 Common specific characteristics of services SECTION 3 -- Bearer services supported by an ISDN I.230 Definition of bearer service categories I.231 Circuit mode bearer service categories I.232 Packet mode bearer service categories SECTION 4 -- Teleservices supported by an ISDN 8 Fascicle III.7 -- Rec. I.110 |
I.240 Definition of teleservices
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I.241 Teleservices supported by an ISDN SECTION 5 -- Supplementary services in ISDN I.250 Definition of supplementary services I.251 Number identification supplementary services I.252 Call offering supplementary services I.253 Call completion supplementary services I.254 Multiparty supplementary services I.255 ``Community of interest'' supplementary services I.256 Charging supplementary services I.257 Additional information transfer supplementary services |
services |
Fascicle III.7 -- Rec. I.110 9
Part III -- Overall network aspects and functions -- I.300-Series
SECTION 1 -- Network functional principles
I.310 ISDN -- Network functional principles
SECTION 2 -- Reference models
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I.320 I.324 I.325 I.326 I.32x |
ISDN Protocol reference model ISDN network architecture Reference configurations for ISDN connection types Reference configurations for relative network resource requirements ISDN hypothetical reference connections |
SECTION 3 -- Numbering, addressing and routing
I.330 ISDN numbering and addressing principles
I.331 (E.164) Numbering plan for the ISDN era
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I.332 I.333 |
Numbering principles for interwork between ISDNs and dedicated networks with different numbering Terminal selection in ISDN |
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I.334 I.335 |
Principles relating ISDN numbers/subaddress to the OSI reference model network layer addresses ISDN routing principles |
SECTION 4 -- Connection types
I.340 ISDN connection types
SECTION 5 -- Performance objectives
10 Fascicle III.7 -- Rec. I.110
I.350 General aspects of Quality of Service and network performance in digital networks, including ISDNs
I.351 Recommendations in other Series including network performance objectives that apply at T-reference points of an ISDN
I.352 Network performance objectives for call processing delays
Part IV -- ISDN user-network interfaces -- I.400-Series
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SECTION 1 -- ISDN user-network interfaces I.410 General aspects and principles relating to Recommendations on ISDN user-network interfaces I.411 ISDN user-network interfaces -- Reference configurations I.412 ISDN user-network interfaces -- Interface structures and access capabilities SECTION 2 -- Application of I-Series Recommendations to ISDN user-network interfaces I.420 Basic user-network interface I.421 Primary rate user-network interface |
Fascicle III.7 -- Rec. I.110 11
SECTION 3 -- ISDN user-network interfaces: Layer 1 Recommendations
I.430 Basic user-network interface -- Layer 1 specification
I.431 Primary rate user-network interface -- Layer 1 specification
I.43x Higher rate user-network interfaces
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SECTION 4 -- I.440 (Q.920) I.441 (Q.921) SECTION 5 -- I.450 (Q.930) I.451 (Q.931) I.452 (Q.932) |
ISDN user-network interfaces: Layer 2 Recommendations ISDN user-network interface data link layer -- general aspects ISDN user-network interface data link layer specification ISDN user-network interfaces: Layer 3 Recommendations ISDN user-network interface layer 3 -- general aspects ISDN user-network interface layer 3 specification for basic call control ISDN user-network interface layer 3 specification -- generic procedures for the control of ISDN |
supplementary services
SECTION 6 -- Multiplexing, rate adaptation and support of existing interfaces
I.460 Multiplexing, rate adaptation and support of existing interfaces
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I.461 (X.30) I.462 (X.31) |
Support of X.21 and X.21 | fIbis and X.20 | fIbis based Data Terminal Equipments (DTEs) by an Support of packet mode terminal equipment by an ISDN |
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I.463 (V.110) |
Support of Data Terminal Equipments (DTEs) with V-series type interfaces by an ISDN |
I.464 Multiplexing, rate adaptation and support of existing interfaces for restricted 64 kbit/s transfer capability
I.465 Support by an ISDN of data terminal equipment with V-Series type interfaces with provision for statistical multiplexing
SECTION 7 -- Aspects of ISDN affecting terminal requirements
I.470 Relationship of terminal functions to ISDN
12 Fascicle III.7 -- Rec. I.110
Part V -- Internetwork interfaces -- I.500-Series
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I.500 I.510 I.511 I.515 I.520 I.530 |
General structure of ISDN interworking Recommendations Definitions and general principles for ISDN interworking ISDN-to-ISDN Layer 1 internetwork interface Parameter exchange for ISDN interworking General arrangements for network interworking between ISDNs Network interworking between an ISDN and a public switched telephone network (PSTN) |
I.540 (X.321) General arrangements for interworking between Circuit-Switched Public Data Networks (CSPDNS) and Integrated Services Digital Networks (ISDNs) for the provision of data transmission services
I.550 (X.325) General arrangements for interworking between Packet Switched Public Data Networks (PSPDNs) and Integrated Services Digital Networks (ISDNs) for the provision of data services
I.560 (V.202) Requirements to be met in providing the telex service within the ISDN
Fascicle III.7 -- Rec. I.110 13
Part VI -- Maintenance principles -- I.600-Series
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I.601 I.602 I.603 I.604 I.605 |
General maintenance principles of ISDN subscriber access and subscriber installation Application of maintenance principles to ISDN subscriber installation Application of maintenance principles to ISDN basic accesses Application of maintenance principles to ISDN primary rate accesses Application of maintenance principles to static multiplexed ISDN basic accesses |
RELATIONSHIP WITH OTHER RECOMMENDATIONS RELEVANT TO ISDNs
(Malaga-Torremolinos, 1984; amended at Melbourne, 1988)
The I-Series of Recommendations applies to the general concept and to the network capabilities of an ISDN mainly insofar as they appear at user-network interfaces and internetwork interfaces. Moreover, the detailed specifications of ISDN interfaces are contained in the I-Series of Recommendations.
The specific aspects within the network, and ancillary features that are necessary to support the above, will continue to be covered wholly or in part, by the appropriate Series of Recommendations. Such aspects may include:
-- technical characteristics of component parts and their performance objectives (e.g. transmission systems, switching systems, interexchange signalling systems);
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-- -- -- -- |
network synchronization; maintenance and operation; services; tariffs and charging. |
Some of the existing Recommendations for telephony and other dedicated service networks are directly applicable also to ISDNs. However, other Recommendations in those Series may need to be developed in order to cover applications in an ISDN.
References to other Recommendations relevant to ISDNs and/or used in developing I-Series Recommendations are listed in Table 1/I.111.
14 Fascicle III.7 -- Rec. I.111
Blanc
Fascicle III.7 -- Rec. I.111 15
H.T. [T1.111]
TABLE 1/I.111
References to other Recommendations relevant to ISDNs
center box; cw(114p) | cw(114p) . vide vide lw(114p) | lw(114p) .
{ Access, user-network (I.400-Series) -- Q.920, Q.930 Adaptation, terminal (I.460-Series) -- X.30, X.31 -- V.110, V.120 Bearer services -- X.25, X.31, X.300 -- G.711 Charging (I.141, I.326) -- D.93, D.200-Series Digital switching -- Q.500-Series Digital transmission -- G.700-Series, G.800-Series, G.900-Series Exchange, digital local -- Q.511 to Q.517 Interworking: digital hierarchies -- G.802 Interworking, ISDN and other networks (I.500-Series) -- X.1, X.2, X.10, X.15, X.25, X.30, X.31, X.71, X.75, X.81 -- X.180, X.181, X.300-Series -- V.110, V.120 -- U.12, U.202 -- Q.921, Q.931 Interworking, signalling systems -- Q.120 to Q.180, Q.251 to Q.300, Q.310 to Q.490 -- Q.600-Series, Q.700-Series -- X.75 Management and maintenance (I.600-Series) -- M.20, M.21, M.22, M.24, M.30, M.36, M.40 -- M.122, M.125 -- M.250, M.251, M.550, M.555, M.557 -- M.770, M.782 -- G.601, G.700-Series, G.821, G.900-Series -- Q.512, Q.542, Q.940 Modelling (I.130-Series, I.140-Series, I.300-Series) -- Q.65, Q.71, Q.80, Q.500-Series, Q.700-Series -- X.200, X.300 -- Z.100-Series Numbering (I.330-Series) -- E.163, E.164, E.165, E.166, E.167 -- F.69 -- X.121, X.122, X.200 -- Q.921, Q.931, Q.932 -- T.90 Parameter exchange (I.515) -- V.32, V.100, V.110, V.120 -- G.725 -- X.21, X.21 | fIbis , X.25, X.30, X.31 -- Q.931, Q.932, Q.764
} { Performance (I.350-Series) -- G.100-Series -- G.821, G.822, G.823 and G.824 -- P.56, P.66 and P.84 Protection -- K.20 -- K.22 -- K.23 Routing (I.335) -- E.164, E.170 to E.172, E.502 -- G.801 -- X.110 -- Q.600-Series, Q.700-Series, Q.930, Q.931 Signalling, user-network (I.440-Series, I.450-Series) -- Q.920 to Q.940 Signalling, inter-exchange (SS No. 7) -- Q.701 to Q.714, Q.761 to Q.766, Q.771 to Q.774 Speech encoding -- G.711, G.721, G.722, G.723, G.725 Supplementary services (I.250-Series) -- Q.932 -- Q.71 to Q.99 -- X.2 Switching -- Q.500-Series Telephony, transmission quality -- G.100-Series Teleservices (I.240-Series) -- E-Series -- F-Series -- X-Series -- T-Series -- U.201 -- G.711, G.722 Terminals (I.470) -- T.90 -- E.330, E.331 -- P.31 -- V.110, V.120, V.230 Tones and announcements (I.530) -- E.184 -- V.25
Transmission -- G.700-Series, G.800-Series, G.900-Series Vocabulary (I.112, I.113) -- G.701
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Fascicle III.7 -- Rec. I.111 |
Tableau 1/I.111 [T1.111], p. 4 |
VOCABULARY OF TERMS FOR ISDNs
(Malaga-Torremolinos, 1984; amended at Melbourne, 1988)
This Recommendation consists primarily of those terms and definitions that are considered essential to the understanding and application of the principles of an Integrated Services Digital Network (ISDN). They are not exclusive to ISDNs and are also recommended for application, insofar as they are relevant, to other types of telecommunication networks.
Included are some terms that are already defined in other Recommendations. However, the definitions given here embrace only the essential concepts and on that basis it is considered that they are not inconsistent with the more specialized definitions that appear in those other Recommendations.
A small number of the terms and definitions in this Recommendation are duplicated in Recommendation G.701. References to these definitions are given in brackets, for example { 00 } as an aid to ensuring consistency between the two Recommendations in the event of future amendments.
According to the conventions applied in this Recommendation, any term in common usage but whose use is deprecated in the sense defined, is shown as in the following example: ``419 functional group [functional grouping]''.
Where a truncated term is widely used in an understood context the complete term is quoted following the colloquial form, for example, ``111 circuit, telecommunication circuit''.
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Annex A to this Recommendation contains an alphabetical list of all of the terms contained in this Recommendation. CONTENTS |
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2.1 2.2 2.3 2.4 2.5 |
General Services Networks Access Signalling |
Annex A -- Alphabetical List
2.1 General
101 communication
Fascicle III.7 -- Rec. I.112 17
F: communication
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S: comunicacion´ The transfer of information according to agreed conventions. Note -- In French and Spanish the corresponding terms ``communications'' |
and ``comunicacion''´ have additional specific meanings in |
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telecommunication. 102 signal { 00 } |
F: signal
S: sen~al
A physical phenomenon one or more of whose characteristics may vary to represent information.
18 Fascicle III.7 -- Rec. I.112
103 analogue signal { 00 }
F: signal analogique
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S: sen~al analogica´ |
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A signal one of whose characteristic quantities follows continuously the variations of another physical quantity representing information. |
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104 |
discretely-timed signal { 00 } F: signal (temporel) discret S: sen~al discretamente temporizada |
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A signal composed of successive elements in time, each element having one or more characteristics which can convey information, for |
example, its duration, its waveform and its amplitude.
105 digital signal { 00 }
F: signal numerique´
S: sen~al digital
A discretely-timed signal in which information is represented by a number of well-defined discrete values that one of its characteristic quantities may take in time.
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Note -- The term may be qualified to indicate the digit rate, for example: ``140 Mbit/s digital signal''. |
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106 |
transmission { 00 } F: transmission S: transmision´ The action of conveying signals from one point to one or more other points. Note 1 -- Transmission can be effected directly or indirectly, with or without intermediate storage. Note 2 -- The use of the English word ``transmission'' in the sense of ``emission'' is deprecated. |
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107 |
digital transmission { 00 } F: transmission numerique´ S: transmision´ digital The transmission of digital signals by means of a channel or channels that may assume in time any one of a defined set of discrete states. |
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108 |
channel, transmission channel { 00 } F: voie, voie de transmission S: canal, canal de transmision´ A means of unidirectional transmission of signals between two points. Note 1 -- Several channels may share a common path; for example each channel may be allocated a particular frequency band or a |
particular time slot.
Fascicle III.7 -- Rec. I.112 19
Note 2 -- The term may be qualified by the nature of the transmitted signals, by the bandwidth, by the digit rate, or by an arbitrary designation.
Note 3 -- See also Term 414, access channel.
20 Fascicle III.7 -- Rec. I.112
109 digital channel, digital transmission channel { 00 }
F: voie numerique,´ voie de transmission numerique´
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S: canal digital, canal de transmision´ digital The means of unidirectional digital transmission of digital signals between two points. |
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110 |
telecommunication { 00 } F: tel´ ecommunication´ S: telecomunicacion´ Any transmission and/or emission and reception of signals representing signs, writing, images and sounds or intelligence of any nature by |
wire, radio, optical or other electromagnetic systems.
111 circuit, telecommunication circuit { 00 }
F: circuit, circuit de tel´ ecommunications´
S: circuito, circuito de telecomunicacion´
A combination of two transmission channels permitting bi-directional transmission of signals between two points, to support a single communication.
Note 1 -- If the telecommunication is by nature unidirectional (for example: long distance television transmission), the term ``circuit'' is sometimes used to designate the single channel providing the facility.
Note 2 -- In a telecommunication network use of the term ``circuit'' is generally limited to a telecommunication circuit directly connecting two switching devices or exchanges, together with associated terminating equipment.
Note 3 -- A telecommunication circuit may permit transmission in both directions simultaneously (duplex) or not simultaneously (simplex).
Note 4 -- A telecommunication circuit that is used for transmission in one direction only is sometimes referred to as a unidirectional telecommunication circuit. A telecommunication circuit that is used for transmission in both directions (whether simultaneously or not) is sometimes referred to as a bidirectional telecommunication circuit.
112 digital circuit, digital telecommunication circuit { 00 }
F: circuit numerique,´ circuit numerique´ de tel´ ecommunications´
S: circuito digital, circuito de telecomunicacion´ digital
A combination of two digital transmission channels permitting bidirectional digital transmission between two points, to support a single communication.
Note 1 -- If the telecommunication is by nature unidirectional (for example: long distance television transmission), the term ``digital circuit'' is sometimes used to designate the single digital channel providing the facility.
Note 2 -- In a telecommunication network, use of the term ``digital circuit'' is generally limited to a digital telecommunication circuit directly connecting two switching devices or exchanges, together with associated terminating equipment.
Note 3 -- A digital telecommunication circuit may permit transmission in both directions simultaneously (duplex), or not simultaneously (simplex).
Note 4 -- A digital telecommunication circuit that is used for transmission in one direction only is sometimes referred to as a unidirectional digital telecommunication circuit. A digital telecommunication circuit that is used for transmission in both directions (whether simultaneously or not) is sometimes referred to as a bidirectional digital telecommunication circuit.
Fascicle III.7 -- Rec. I.112 21
113 switching
F: commutation
S: conmutacion´
The process of interconnecting functional units, transmission channels or telecommunication circuits for as long as is required to convey signals.
22 Fascicle III.7 -- Rec. I.112
114 digital switching
F: commutation numerique´
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S: conmutacion´ digital Switching by means that may assume in time any one of a defined set of discrete signal states, in order to convey digital signals. |
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115 |
exchange F: commutateur [central] S: central An aggregate of traffic carrying devices, switching stages, controlling and signalling means, and other functional units at a network node |
that enables subscriber lines, telecommunication circuits and/or other functional units to be interconnected as required by individual users.
116 digital exchange
F: commutateur numerique´
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S: central digital An exchange that switches digital signals by means of digital switching. |
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117 |
integrated digital transmission and switching F: transmission et commutation numeriques´ integr´ ees´ S: transmision´ y conmutacion´ digitales integradas The direct (digital) concatenation of digital transmission and digital switching, that maintains a continuous digital transmission path. |
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2.2 201 |
Services service, telecommunication service F: service, service de tel´ ecommunications´ S: servicio, servicio de telecomunicacion´ That which is offered by an Administation or RPOA to its customers in order to satisfy a specific telecommunication requirement. Note -- Bearer service and teleservice are types of telecommunication service. Other types of telecommunication service |
may be |
identified in the future.
202 bearer service
F: service support
S: servicio portador
A type of telecommunication service that provides the capability for the transmission of signals between user-network interfaces.
Note -- The ISDN connection type used to support a bearer service may be identical to that used to support other types of telecommunication service.
Fascicle III.7 -- Rec. I.112 23
203 teleservice [telecommunication service]
F: tel´ eservice´
S: teleservicio, servicio final
A type of telecommunication service that provides the complete capability, including terminal equipment functions, for communication between users according to protocols established by agreement between Administrations and/or RPOAs.
24 Fascicle III.7 -- Rec. I.112
204 teleaction service [telemetry service]
F: service de tel´ eaction´ [service de tel´ emesure]´
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205 |
S: servicio de teleaccion´ A type of telecommunication service that uses short messages, requiring a very low transmission rate, between the user and the network. Note -- Examples of teleaction services are: telealarm, telecommand, telealerting. demand service, demand telecommunication service |
S: servicio por demanda, servicio de telecomunicacion´ por demanda
A type of telecommunication service in which the communication path is established almost immediately, in response to a user request effected by means of user-network signalling.
206 reserved circuit service, reserved circuit telecommunication service
F: service de circuit reserv´ e,´ service de circuit de tel´ ecommunications´ reserv´ e´
S: servicio de circuito reservado, servicio de telecomunicacion´ de circuito reservado
A type of telecommunication service in which the communication path is established at a time specified in advance by the user, in response to a user request effected by means of user-network signalling.
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Note -- The duration of the communication, or the time of release of the communication path, may also be specified in advance by the user. |
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207 |
permanent circuit service, permanent circuit telecommunication service F: service de circuit permanent, service de circuit de tel´ ecommunications´ permanent S: servicio de circuito permanente, servicio de telecomunicacion´ de circuito permanente A type of telecommunication service in which the communication path is established in response to a customer request effected by means |
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of an |
operational or administrative message. Note -- Release of the communication path is effected in a similar way to its establishment. |
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208 |
service attribute, telecommunication service attribute F: attribut de service, attribut de service de tel´ ecommunications´ S: atributo de servicio, atributo de servicio de telecomunicacion´ A specified characteristic of a telecommunication service. Note -- The value(s) assigned to one or more service attributes may be used to distinguish that telecommunication service from others. |
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2.3 301 |
Networks link, transmission link Fascicle III.7 -- Rec. I.112 25 |
F: liaison, liaison de transmission
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S: enlace, enlace de transmision´ A means of transmission with specified characteristics between two points. Note -- The type of the transmission path or the capacity is normally indicated, e.g. radio link, coaxial link, or 2048 kbit/s link. |
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302 |
digital link, digital transmission link { 00 } F: liaison numerique,´ liaison de transmission numerique´ S: enlace digital, enlace de transmision´ digital The whole of the means of digital transmission of a digital signal of specified rate between two digital distribution frames (or equivalent). |
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26 |
Fascicle III.7 -- Rec. I.112 |
Note 1 -- A digital link comprises one or more digital sections and may include multiplexing and/or demultiplexing, but not switching.
Note 2 -- The term may be qualified to indicate the transmission medium used, for example: ``digital satellite link''.
Note 3 -- The term always applies to the combination of ``go'' and ``return'' directions of transmission, unless stated otherwise.
Note 4 -- The term ``digital path'' is sometimes used to describe one or more digital links connected in tandem, especially between equipments at which the signals of the specified rate originate and terminate.
303 node, switching node
F: noeud, noeud de commutation
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S: nodo, nodo de conmutacion´ A point at which switching occurs. Note -- The term ``node'' is sometimes used to refer to a point at which circuits are interconnected by means other than switching. In such |
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case a suitable qualification should be used, for example: ``synchronization node''. |
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304 |
digital switching node F: noeud de commutation numerique´ S: nodo de conmutacion´ digital A node at which digital switching occurs. |
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305 |
network, telecommunication network F: reseau,´ reseau´ de tel´ ecommunications´ S: red, red de telecomunicacion´ A set of nodes and links that provides connections between two or more defined points to facilitate telecommunication between them. |
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306 |
digital network, integrated digital network F: reseau´ numerique,´ reseau´ numerique´ integr´ e´ S: red digital, red digital integrada A set of digital nodes and digital links that uses integrated transmission and switching to provide digital connections between two or more |
defined points to facilitate telecommunication between them.
307 integrated services network
F: reseau´ avec integration´ des services
S: red de servicios integrados
A network that provides or supports a range of different telecommunication services.
308 integrated services digital network (ISDN)
Fascicle III.7 -- Rec. I.112 27
F: reseau´ numerique´ avec integration´ des services (RNIS)
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S: red digital de servicios integrados (RDSI) An integrated services network that provides digital connections between user-network interfaces. |
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309 |
connection F: connexion, cha| ne de connexion S: conexion´ A concatenation of transmission channels or telecommunication circuits, switching and other functional units set up to provide for the |
transfer of signals between two or more points in a telecommunication network, to support a single communication.
28 Fascicle III.7 -- Rec. I.112
310 digital connection { 00 }
F: connexion numerique´
S: conexion´ digital
A concatenation of digital transmission channels or digital telecommunication circuits, switching and other functional units set up to provide for the transfer of digital signals between two or more points in a telecommunication network, to support a single communication.
311 switched connection
F: connexion commutee´
S: conexion´ conmutada
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A connection that is established by means of switching. Note -- A switched connection may be used to support both demand and reserved circuit services. |
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312 |
non-switched connection F: connexion non commutee´ S: conexion´ no conmutada A connection that is established without the use of switching, for example by means of hard-wired joints. |
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313 |
exchange connection F: connexion de commutateur S: conexion´ de central A connection that is established through an exchange, between the terminations on that exchange, of two or more channels or circuits. |
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314 |
ISDN connection F: connexion RNIS S: conexion´ de RDSI A connection that is established through an ISDN between specified ISDN interfaces. |
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315 |
connection attribute, ISDN connection attribute F: attribut de connexion, attribut de connexion RNIS S: atributo de conexion,´ atributo de conexion´ de RDSI A specified characteristic of an ISDN connection. Note -- The value(s) assigned to one or more connection attributes may be used to distinguish that connection from others. |
||
|
316 |
connection type, ISDN connection type F: type de connexion, type de connexion RNIS Fascicle III.7 -- Rec. I.112 29 |
S: tipo de conexion,´ tipo de conexion´ de RDSI
|
A description of a set of ISDN connections that consists of stated values of one or more ISDN connection attributes. |
||
|
317 |
connection element, ISDN connection element F: el´ ement´ de connexion, el´ ement´ de connexion RNIS S: elemento de conexion,´ elemento de conexion´ de RDSI A part of an ISDN connection which has stated values of one or more ISDN connection attributes. |
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|
30 |
Fascicle III.7 -- Rec. I.112 |
|
318 |
switched connection element, switched ISDN connection element F: el´ ement´ de connexion commutee,´ el´ ement´ de connexion RNIS commutee´ S: elemento de conexion´ conmutada, elemento de conexion´ conmutada de RDSI An ISDN connection element that is established by means of switching. |
||
|
319 |
non-switched connection element, non-switched ISDN connection element F: el´ ement´ de connexion non commutee,´ el´ ement´ de connexion RNIS non commutee |
ee´ |
|
|
S: elemento de conexion´ no conmutada, elemento de conexion´ no conmutada An ISDN connection element that is established without switching. |
de RDSI |
||
|
320 |
point-to-point ISDN connection |
|
S: conexion´ de RDSI punto a punto An ISDN connection that is established between two specified ISDN interfaces. |
||
|
321 |
point-to-multipoint ISDN connection F: connexion RNIS point-multipoints S: conexion´ de RDSI punto a multipunto An ISDN connection that is established between a single specified ISDN interface, and more than one other specified ISDN interface. |
|
|
2.4 401 |
Access user, user of a telecommunication network F: usager, usager d'un reseau´ de tel´ ecommunications´ F: usuario, usuario de una red de telecomunicacion´ A person or machine delegated by a customer to use the services and/or facilities of a telecommunication network. |
|
|
402 |
user access, user-network access |
|
S: acceso de usuario, acceso usuario-red The means by which a user is connected to a telecommunication network in order to use the services and/or facilities of that network. |
|||
|
403 |
function F: fonction Fascicle III.7 -- Rec. I.112 31 |
|
S: funcion´ A set of processes defined for the purpose of achieving a specified objective. Note -- Functions may be ordered in a logical hierarchy. |
||
|
404 |
layer [level] F: couche [niveau] S: capa [nivel] A conceptual region that embodies one or more functions between an upper and a lower logical boundary within a hierarchy of functions. Note -- The Open Systems Interconnection (OSI) reference model has seven layers. |
|
|
32 |
Fascicle III.7 -- Rec. I.112 |
405 protocol
F: protocole
S: protocolo
A formal statement of the procedures that are adopted to ensure communication between two or more functions within the same layer of a hierarchy of functions.
406 access protocol
S: protocolo de acceso
A defined set of procedures that is adopted at an interface at a specified reference point between a user and a network to enable the user to employ the services and/or facilities of that network.
407 user-user protocol
|
S: protocolo usuario-usuario A protocol that is adopted between two or more users in order to ensure communication between them. |
|||
|
408 |
interface { 00 } F: interface S: interfaz The common boundary between two associated systems. |
||
|
409 |
user-network interface F: interface usager-reseau´ S: interfaz usuario-red The interface between the terminal equipment and a network termination at which interface the access protocols apply. |
||
|
410 |
layer interface F: interface de couche S: interfaz de capa The interface between adjacent layers of hierarchy of layers. |
||
|
411 |
physical interface F: interface physique S: interfaz fisico´ Fascicle III.7 -- Rec. I.112 |
33 |
|
412 |
The interface between two equipments. interface specification F: specification´ d'interface S: especificacion´ de interfaz A formal statement of the type, quantity, form and order of the interconnections and interactions between two associated systems, at their |
interface.
413 physical interface specification [physical interface]
F: specification´ d'interface physique [interface physique]
S: especificacion´ de interfaz fisico´ [interfaz fisico]´
A formal statement of the mechanical, electrical, electromagnetic and optical characteristics of the interconnections and interactions between two associated equipments, at their interface.
34 Fascicle III.7 -- Rec. I.112
414 access channel [channel]
S: canal de acceso [canal]
A designated part of the information transfer capability having specified characteristics, provided at the user-network interface:
Note 1 -- The term ``transmission channel'' is well understood to imply unidirectional working only, and then is commonly abbreviated to ``channel''. In the special case where the term ``access channel'' is used to encompass bidirectional working through the user-network interface, it must not be abbreviated to channel.
Note 2 -- The term ``access channel'' may be qualified, for example by H, B or D in which case it is appropriate to abbreviate the term to ``H-channel'', to ``B-channel'' or to ``D-channel''.
Note 3 -- Unless otherwise qualified, the access channel characteristics at the user-network interface are assumed to be bidirectional symmetric. When such characteristics are unidirectional, the term ``unidirectional access channel'' should be used.
415 interface structure, ISDN user-network interface structure
F: structure d'interface, structure d'interface RNIS usager-reseau´
S: estructura de interfaz, estructura de interfaz usuario-red de la RDSI
The number and type of the access channels that appear at an ISDN user-network interface.
416 access capability, ISDN access capability
|
S: capacidad de acceso, capacidad de acceso de la RDSI The number and type of the access channels at an ISDN access interface that are actually available for telecommunication purposes. |
|||
|
417 |
terminal equipment F: equipement´ terminal (ET) S: equipo terminal Equipment that provides the functions necessary for the operation of the access protocols by the user. |
||
|
418 |
network termination F: terminaison de reseau´ S: terminacion´ de red Equipment that provides the functions necessary for the operation of the access protocols by the network. Note -- The network termination provides essential functions for transmission purposes. |
||
|
419 |
functional group [functional grouping] F: groupe fonctionnel [groupement fonctionnel] S: grupo funcional [agrupacion´ funcional] Fascicle III.7 -- Rec. I.112 35 |
|
420 |
A set of functions that may be performed by a single equipment. reference point F: point de ref´ erence´ S: punto de referencia A conceptual point at the conjunction of two non-overlapping functional groups. |
|
|
36 |
Fascicle III.7 -- Rec. I.112 |
421 reference configuration
F: configuration de ref´ erence´
S: configuracion´ de referencia
A combination of functional groups and reference points that shows possible network arrangements.
422 multipoint access
S: acceso multipunto
User access in which more than one terminal equipment is supported by a single network termination.
423 access contention
S: contienda de accesso
A conflict between the demands made on a network termination in multipoint access.
424 access contention resolution
|
S: resolucion´ de contienda de acceso The arbitration of conflicting demands on a network termination in multipoint access. |
||
|
2.5 501 |
Signalling signalling F: signalisation S: sen~alizacion´ |
|
|
The exchange of information specifically concerned with the establishment and control of connections, and with management, in a |
telecommunication network.
502 channel-associated signalling
F: signalisation voie par voie
S: sen~alizacion´ asociada al canal
A method of signalling in which signalling information relating to the traffic carried by a single channel is transmitted in the channel itself or in a signalling channel permanently associated with it.
503 common channel signalling
Fascicle III.7 -- Rec. I.112 37
F: signalisation sur voie commune, signalisation par canal semaphore´
S: sen~alizacion´ por canal comun´
A method of signalling in which signalling information relating to a multiplicity of circuits or functions or for network management, is conveyed over a single channel by addressed messages.
504 in-slot signalling
F: signalisation dans le creneau´ temporel
S: sen~alizacion´ dentro del intervalo
Signalling associated with a channel and transmitted in a digit time-slot permanently (or periodically) allocated in the channel time-slot.
38 Fascicle III.7 -- Rec. I.112
505 out-slot signalling
F: signalisation hors creneau´ temporel
|
S: sen~alizacion´ fuera del intervalo |
||
|
Signalling associated with a channel and transmitted in one or more separate digit time-slots not within the channel time-slot. |
||
|
506 |
speech digit signalling F: signalisation par el´ ements´ numeriques´ vocaux S: sen~alizacion´ por digitos´ de conversacion´ |
|
|
A type of channel-associated signalling in which digit time-slots primarily used for the transmission of encoded speech are periodically used |
for signalling.
ANNEX A
(to Recommendation I.112)
Alphabetical list of terms contained in this Recommendation
|
416 414 423 424 406 103 202 108 502 111 503 101 309 315 317 316 205 205 |
access capability access channel access contention access contention resolution access protocol analogue signal bearer service channel channel-associated signalling circuit common-channel signalling communication connection connection attribute connection element connection type demand service demand telecommunication service |
109 digital channel
The number against a term indicates its location in the vocabulary.
Fascicle III.7 -- Rec. I.112 39
|
112 310 116 302 306 105 114 304 112 107 109 302 104 115 313 403 419 504 306 117 308 307 408 412 415 416 314 315 317 316 415 404 410 40 |
digital digital digital digital digital digital digital digital digital digital digital digital discretely-timed exchange exchange function functional in-slot integrated integrated integrated integrated interface interface interface ISDN ISDN ISDN ISDN ISDN ISDN layer layer Fascicle |
digital circuit digital connection digital exchange digital link digital network digital signal digital switching digital switching node digital telecommunication circuit digital transmission digital transmission channel digital transmission link discretely-timed signal exchange exchange connection function functional group in-slot signalling integrated digital network integrated digital transmission and switching integrated services digital network (ISDN) integrated services network interface interface specification interface structure ISDN access capability ISDN connection ISDN connection attribute ISDN connection element ISDN connection type ISDN user-network interface structure layer layer interface III.7 -- Rec. I.112 |
|
301 422 305 418 303 312 319 319 505 207 207 411 413 321 320 405 421 420 206 206 201 208 102 501 506 311 318 318 113 303 204 110 111 305 201 |
link multipoint access network network termination node non-switched connection non-switched connection element non-switched ISDN connection element out-slot signalling permanent circuit service permanent circuit telecommunication service physical interface physical interface specification point-to-multipoint ISDN connection point-to-point ISDN connection protocol reference configuration reference point reserved circuit service reserved circuit telecommunication service service service attribute signal signalling speech digit signalling switched connection switched connection element switched ISDN connection element switching switching node teleaction service telecommunication telecommunication circuit telecommunication network telecommunication service |
Fascicle III.7 -- Rec. I.112 41 |
|
208 203 417 106 108 301 401 402 402 409 407 401 |
telecommunication service attribute teleservice terminal equipment transmission transmission channel transmission link user user access user-network access user-network interface user-user protocol user of a telecommunication network |
VOCABULARY OF TERMS FOR BROADBAND ASPECTS OF ISDN
(Melbourne, 1988)
This Recommendation consists primarily of those terms and definitions that are considered essential to the understanding and application of the principles of Broadband Aspects of Integrated Services Digital Network (B-ISDN). They are not exclusive to broadband aspects of ISDN and are recommended also for application, insofar as they are relevant, to other types of telecommunication networks.
Included are terms that may already be defined in other CCITT/CCIR Recommendations. However, the definitions given here embrace only the essential concepts and on that basis it is considered that they are not inconsistent with the more specialized definitions that appear in those Recommendations.
42 Fascicle III.7 -- Rec. I.113
According to the conventions applied in this Recommendation, any term in common usage, but whose use is deprecated, is shown in brackets as in the following example: ``broadband [wideband]''.
Where a truncated term is widely used in an understood context the complete term is quoted following the colloquial form, for example, ``contribution, contribution application''.
Some definitions include terms in bold face to indicate that these terms are defined elsewhere in this Recommendation.
Annex A to this Recommendation contains an alphabetical list of all the terms contained in this Recommendation.
(This section is divided into two sub-sections, 2.1 Services, and 2.2 Interfaces, channels and transfer modes. Within each sub-section the terms are listed and defined.)
|
2.1 101 |
Services broadband [wideband] |
||||
|
F: S: |
large bande banda ancha |
|
A service or system requiring transmission channels capable of supporting rates greater than the primary rate. |
|||
|
102 |
broadcast F: diffusion S: difusion´ A value of the service attribute ``communication configuration'', which denotes unidirectional distribution to all subscribers. Note -- This term should not be confused with the term ``broadcasting service'' as defined in the ITU Radio Regulations. |
||
|
103 |
connectionless service F: service sans connexion S: servicio sin conexion´ A service which allows the transfer of information among service subscribers without the need for end-to-end call |
establishment |
procedures.
|
Note -- Connectionless services may be used to support both interactive and distribution services. |
||
|
104 |
contribution, contribution application F: contribution S: contribucion,´ aplicacion´ de contribucion´ Use of a broadband service or channel for transferring audio or video information to user for further post-production processing and |
subsequent distribution .
Fascicle III.7 -- Rec. I.113 43
|
105 |
conversational service F: service conversationnel S: servicio conversacional An interactive service which |
provides for bidirectional communication by means of real-time (no store-and-forward) end-to-end |
information transfer from user to user or between user and host.
44 Fascicle III.7 -- Rec. I.113
106 distribution, distribution aplication
F: distribution
S: disribucion,´ aplicacion´ de distribucion´
Use of a broadband service or channel for transferring audio or video information to a user or a number of users which will not apply post-production processing to the information.
107 distribution service
F: service de distribution
S: servicio de distribucion´
Service characterized by the unidirectional flow of information from a given point in the network to other (multiple) locations. Distribution services are subdivided into two classes: distribution services without user individual presentation control and distribution services with user individual presentation control .
|
108 |
distribution service with user individual presentation control F: service distribue´ avec contr| le de presentation´ par l'usager S: servicio de distribucion´ con control de la presentacion´ por el usuario A distribution service in which the information is provided as a sequence of information entities (e.g., frames) with cyclical repetition, so |
that the user has the ability to select individual information entities and can control the start and order of the information.
109 distribution service without user individual presentation control
F: service distribue´ sans contr| le de presentation´ par l'usager
S: servicio de distribucion´ sin control de la presentacion´ por el usuario
A distribution service which users can access without having any control over the start and order of the presentation of the distributed information.
110 enhanced-quality television
F: tel´ evision´ de qualite´ amelior´ ee´
|
S: television´ de calidad mejorada Television of quality superior to existing-quality television , but less than the quality of high-definition television. |
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|
111 |
existing-quality television F: tel´ evision´ de qualite´ conventionnelle S: television´ de calidad convencional Television as defined in conventional 625-line and 525-line television standards, such as NTSC, PAL and SECAM. |
||
|
112 |
interactive service F: service interactif Fascicle III.7 -- Rec. |
I.113 45 |
S: servicio interactivo
A service which provides the means for bidirectional exchange of information between users or between users and hosts. Interactive services are subdivided into three classes of services: conversational services, messaging services and retrieval services .
113 messaging service
F: service de messagerie
S: servicio de mensajeria´
An interactive service which offers user-to-user communication between individual users via storage units with store-and-forward, mailbox and/or message handling (e.g. information editing, processing and conversion) functions.
46 Fascicle III.7 -- Rec. I.113
114 mixed document
F: document mixte
|
S: documento mixto A document that may contain text, graphics, data, image, and moving picture information as well as voice annotation. |
|||
|
115 |
multipoint F: multipoint S: multipunto A value of the attribute ``communication configuration'' which denotes that the communication involves more |
than two network |
terminations.
116 post-production processing
S: tratamiento de posproduccion´
Further processing of contributed audio and video information, to change the form or presentation of the information prior to its final utilization.
117 retrieval service
F: service de consultation
S: servicio de consulta
An interactive service which provides the capability of accessing information stored in database centres. This information will be sent to the user on demand only. The information can be retrieved on an individual basis, i.e., the time at which an information sequence is to start is under the control of the user.
118 sound retrieval service
F: service de consultation de programmes sonores
|
S: servicio de consulta de programas sonoros On-demand (user initiated) retrieval of music and other audio information. |
|||
|
119 |
videomessaging F: messagerie video´ S: videomensajeria´ A messaging service for the transfer for moving pictures. |
||
|
2.2 |
Interfaces, channels and transfer modes |
Fascicle III.7 -- Rec. I.113 47 |
201 asynchronous time-division multiplexing
F: multiplexage temporel asynchrone
S: multiplexacion´ asincrona´ por division´ en el tiempo
A multiplexing technique in which a transmission capability is organized in undedicated slots filled with cells with respect to each application's instantaneous real need. In this case, the terminal equipment -- i.e. the customer application -- defines the actual transmitted bit rate, whatever this rate is, possibly variable during the communication. This technique carries a labelled interface structure over a frame or a self-delineating labelled interface .
48 Fascicle III.7 -- Rec. I.113
202 asynchronous transfer mode (ATM)
F: mode de transfert asynchrone (MTA)
S: modo de transferencia asincrono´ (MTA)
A transfer mode in which the information is organized into cells ; it is asynchronous in the sense that the recurrence of cells depends on the required or instantaneous bit rate. Statistical and deterministic values may also be used to qualify the transfer mode .
203 block
F: bloc
|
S: bloque A unit of information consisting of a header and an information field. |
|||
|
204 |
block payload F: charge utile de bloc S: carga neta del bloque The user information bits within a block . |
||
|
205 |
broadband access |
S: acceso de banda ancha
An ISDN access able to contain at least one channel capable of supporting a rate greater than the primary rate, or supporting an equivalent information transfer rate.
206 broadband communication channel
S: canal de comunicacion´ de banda ancha
A standard portion of the information payload capacity , available to the user for ISDN services. A broadband communication channel exists only during a call, as set-up by a signalling or administrative procedure. The throughput supported by the broadband communication channel may be deterministic or statistical .
207 cell
F: cellule
|
S: celula´ A block of fixed length identified by a label at layer 1 of the OSI reference model. |
|||
|
208 |
circuit transfer mode F: mode de transfert par circuit |
Fascicle III.7 -- Rec. I.113 49 |
S: modo de transferencia circuito, modo de transferencia por circuito
A transfer mode in which transmission and switching functions are achieved by permanent allocation of channels/bandwidth between the connections.
209 deterministic, ATM deterministic transfer mode
F: mode de transfert asynchrone deterministe´
S: deterministico,´ modo de transferencia deterministico´ MTA
A specific transfer mode of the asynchronous transfer mode (ATM) in which the maximum information transfer capacity specified for a given service is provided to the user throughout a call.
50 Fascicle III.7 -- Rec. I.113
210 frame
F: trame
|
S: trama A block of variable length identified by a label at layer 2 of the OSI reference model, e.g. an HDLC block. |
||
|
211 |
framed interface F: interface tramee´ S: interfaz entramado An interface whose serial bit stream is segmented into periodic physical frames . Each frame is divided by a fixed partition into an |
overhead and an information payload portion.
212 header, block header
F: en-t| te de bloc
|
S: encabezamiento, encabezamiento de bloque The bits within a block allocated for labelled multiplexing functions. |
||
|
213 |
hybrid interface structure F: structure d'interface hybride S: estructure hibrida´ de interfaz An interface structure which has a mixture of labelled channels and positioned channels . |
|
|
214 |
information payload capacity F: capacite´ utile d'information S: capacidad de carga neta de informacion´ The interface rate minus the overhead. The bit rate of the interface payload . |
|
|
215 |
interface overhead F: charge supplementaire´ d'interface S: tara del interfaz The remaining portion of the bit stream after deducting the information payload . The interface overhead may be essential (e.g. framing |
for an interface shared by users) or ancillary (e.g. performance monitoring).
216 interface payload
F: charge utile d'interface
S: carga neta del interfaz
Fascicle III.7 -- Rec. I.113 51
The portion of the bit stream of a framed interface which can be used for telecommunication services. Any signalling is included in the interface payload .
217 interface rate, interface bit rate
F: debit´ (binaire) de l'interface
S: velocidad del interfaz, velocidad binaria del interfaz
The gross bit rate at the interface, e.g. the bit rate at the boundary between the physical layer and the physical medium.
52 Fascicle III.7 -- Rec. I.113
218 labelled channel
F: voie etiquet´ ee´
|
S: canal etiquetado A temporally-ordered collection of all block payloads having a common label value. |
||
|
219 |
labelled deterministic channel F: voie etiquet´ ee´ deterministe´ S: canal etiquetado deterministico´ A labelled channel that, in each successive interval of specified constant duration, contains on the average a constant number of blocks . |
|
|
220 |
labelled interface structure F: structure d'interface etiquet´ ee´ S: estructura de interfaz etiquetado An interface structure in which all services and signalling are provided by labelled channels . A labelled interface structure can be |
accommodated within a framed interface or a self-delineating labelled interface .
221 labelled multiplexing
F: multiplexage par etiquetage´
|
S: multiplexacion´ por etiquetado The multiplexing of labelled channels by concatenating the blocks of the different channels. |
||
|
222 |
labelled statistical channel F: voie etiquet´ ee´ statistique S: canal etiquetado estadistico´ A labelled channel in which the payload of the successive blocks of the channel is random and/or the block durations are random. |
|
|
223 |
logical signalling channel F: voie logique de signalisation S: canal logico´ de sen~alizacion´ |
|
|
A logical channel for signalling information with a defined maximum capacity, which is contained within an information channel or a |
physical signalling channel .
224 network node interface (NNI)
F: interface de noeud du reseau´ (INR)
S: interfaz de nodo de red (INR)
Fascicle III.7 -- Rec. I.113 53
|
225 |
The interface between two network nodes (e.g. synchronous digital multiplex equipments, digital exchanges). packet F: paquet S: paquete An information block identified by a label at layer 3 of the OSI reference model. |
|
|
54 |
Fascicle III.7 -- Rec. I.113 |
226 packet transfer mode
F: mode de transfert par paquet
S: modo de transferencia paquete, modo de transferencia por paquete
A transfer mode in which the transmission and switching functions are achieved by packet oriented techniques, so as to dynamically share network transmission and switching resources between a multiplicity of connections.
227 payload module
F: module de charge utile
|
S: modulo´ de carga neta, modulo´ de carga util,´ modulo´ neto That portion of the information payload within which one or more channels entirely exist. |
||
|
228 |
periodic frame F: trame periodique´ S: trama periodica´ A transmission segment which is repeated at intervals of equal duration (e.g. 125 msec), and may be delineated by incorporating fixed |
periodic patterns into the bit stream.
229 physical frame
F: trame physique
|
S: trama fisica´ A segment of a serial logical bit stream at an interface, partitioned into successive segments. |
|||
|
230 |
physical signalling channel F: voie physique de signalisation S: canal fisico´ de sen~alizacion´ |
||
|
A dedicated physical channel (e.g. D-channel) used for signalling information. It may be used to carry other information. |
|||
|
231 |
positioned channel F: voie identifiee´ par sa position S: canal posicionado, canal localizado A channel that occupies bit positions which form a fixed periodic pattern (e.g. B, H and D-channels in ISDN user interfaces). |
||
|
232 |
positioned interface structure F: structure d'interface positionnee´ S: estructura de interfaz posicionado Fascicle III.7 -- Rec. I.113 55 |
A structure in which all services and signalling are provided by positioned channels . Such a structure can exist only within a framed interface .
233 self-delineating block
S: bloque autodelimitado
A block with the property that its endpoints can be identified by examining the block itself. A defined pattern or flag at the beginning of each block might serve to demarcate the block.
56 Fascicle III.7 -- Rec. I.113
234 self-delineating labelled interface
|
S: interfaz etiquetado autodelimitado An interface whose entire serial bit stream consists of a self-delineating labelled multiplexing . |
||
|
235 |
statistical, ATM statistical transfer mode F: statistique, mode de transfert asynchrone statistique S: estadistico,´ modo de transferencia estadistico´ MTA A specific transfer mode of the asynchronous transfer mode (ATM) in which the average information transfer capacity specified for a |
given service is provided to the user throughout a call.
236 synchronous time division multiplexing
F: multiplexage temporel synchrone
|
S: multiplexacion´ sincrona´ por division en el tiempo A multiplexing technique supporting the synchronous transfer mode (STM). |
||
|
237 |
synchronous transfer mode (STM) F: mode de transfert (temporel) synchrone (MTS) S: modo de transferencia sincrono´ (MTS) A transfer mode which offers periodically to each connection a fixed-length word. |
|
|
238 |
throughput F: capacite´ utile S: caudal de trafico,´ caudal The number of data bits contained in a block (e.g. between the address field and the CRC field of the LAPD-based frames) successfully |
transferred in one direction across a section per unit time.
239 transfer mode
F: mode de transfert
|
S: modo de transferencia Aspects covering transmission, multiplexing and switching in a telecommunications network. |
|||
|
240 |
transit delay F: delai´ de transfert S: retardo de transito´ |
Fascicle III.7 -- Rec. I.113 57 |
The time difference between the instant at which the first bit of the address field of a frame crosses one designated boundary, and the instant at which the last bit of the closing flag of the frame crosses a second designated boundary.
241 virtual circuit
F: circuit virtuel
S: circuito virtual
A type of asynchronous transfer mode (ATM) connection involving establishment and release procedures such that the label associated with each cell need not contain complete routing information.
58 Fascicle III.7 -- Rec. I.113
|
ANNEX A (to Recommendation I.113) Alphabetical list of terms contained in this Recommendation |
|||||
|
201 202 202 209 235 203 212 204 101 205 206 102 207 208 103 104 104 105 209 106 106 107 |
asynchronous time-division multiplexing asynchronous transfer mode ATM ATM deterministic transfer mode ATM statistical transfer mode block block header block payload broadband broadband access broadband communication channel broadcast cell circuit transfer mode connectionless service contribution contribution application conversational service deterministic distribution distribution application distribution service |
|
108 109 110 111 210 |
distribution service with user individual presentation control distribution service without user individual presentation control enhanced-quality television existing-quality television frame |
211 frame interface
The number against a term indicates its location in the vocabulary.
Fascicle III.7 -- Rec. I.113 59
|
212 213 214 112 217 215 216 217 218 219 220 221 222 223 113 114 115 224 224 225 226 227 228 229 230 231 232 116 117 233 234 118 235 237 236 60 |
header hybrid information interactive interface interface interface interface labelled labelled labelled labelled labelled logical messaging mixed multipoint network NNI packet packet payload periodic physical physical positioned positioned post-production retrieval self-delineating self-delineating sound statistical STM synchronous Fascicle |
header hybrid interface structure information payload capacity interactive service interface bit rate interface overhead interface payload interface rate labelled channel labelled deterministic channel labelled interface structure labelled multiplexing labelled statistical channel logical signalling channel messaging service mixed document multipoint network node interface NNI packet packet transfer mode payload module periodic frame physical frame physical signalling channel positioned channel positioned interface structure post-production processing retrieval service self-delineating block self-delineating labelled interface sound retrieval service statistical STM synchronous time division multiplexing III.7 -- Rec. I.113 |
|
237 238 239 240 119 241 101 Blanc |
synchronous transfer mode throughput transfer mode transit delay videomessaging virtual circuit wideband (deprecated) |
Fascicle III.7 -- Rec. I.113 61 |
62 Fascicle III.7 -- Rec. I.113