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MAINTENANCE TERMINOLOGY AND DEFINITIONS
Introduction
This Recommendation consists primarily of those terms and definitions that are considered essential to the understanding of the maintenance of services and networks. Reference is provided to relevant Recommendations from which these terms are derived.
The terms and definitions are given with a section number. Annex A presents the list of terms in alphabetical order with the section number.
For additional definitions concerning transmission systems, see Recommendation M.300; for additional definitions concerning maritime systems, see Recommendation M.1100; and for additional definitions concerning international sound-programme transmission, see Recommendation N.1, N.51 and N.81. Also, complementary definitions concerning transmission restoration can be found in Recommendation M.495.
F: signal d'indication d'alarme (SIA)
S: sen~ al de indicacion´ de alarma (SIA)
An alarm indication signal is a signal associated with a prompt maintenance alarm of a defective maintenance entity and is, when possible, transmitted in the direction affected (downstream direction) as a substitute for the normal signal, indicating to other non-effective entities that a failure has been identified and that other maintenace alarms consequent to this failure should be inhibited. (Rec. M.20)
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F: anomalie S: anomalia´ An anomaly is a discrepancy between the actual and desired characteristic of an item. The desired characteristic may be expressed in the form of a specification. An anomaly may or may not affect the ability of an item to perform a required function. (Rec. M.20) |
Fascicle IV.1 -- Rec. M.60 1
F: equipement´ de commutation automatique
S: equipo de conmutacion´ automatica´
That part of an international exchange concerned with switching operations for routing the call in the desired direction. (Rec. M.700, Red Book )
F: disponibilite´
S: disponibilidad
The availability of an item to be in the state to perform a required function at a given instant of time or at any instant of time within a given time interval, assuming that the external resources, if required, are provided.
Note 1 -- This ability depends on the combined aspects of the reliability performance, the maintainability performance and the maintenance support performance of an item.
Note 2 -- In the definition of the item the external resources required must be delineated.
Note 3 -- The term availability is used as an availability performance measure. (Supplement No 6, Fascicle II.3)
2 Fascicle IV.1 -- Rec. M.60
F: taux d'erreur sur les bits (TEB)
S: tasa de errores en los bits; tasa de error en los bits (TEB)
The ratio of the number of bit errors to the total number of bits transmitted in a given time interval. (Rec. E.800)
S: perdida´ por derivacion´
A term frequently used when a measuring instrument is connected (bridged) across a transmission path or telephone channel. The bridging loss is the resulting reduction in the signal level, and is usually expressed in dBs.
S: canal de acceso [canal]
A designated part, having specified characteristics, of the information transfer capability at the user-network interface.
Note 1 -- The information transfer may be, and usually is, bi-directional.
Note 2 -- See also the definition for transmission channel. (Rec. I.112)
F: voie de transmission
S: canal; canal de transmision´
See Recommendation M.300 for the definition of analogue channel, digital channel and mixed analogue digital channel.
F: circuit; circuit de tel´ ecommunications´
S: circuito; circuito de telecomunicacion´
A combination of two transmission channels permitting bidirectional communication between two points, to support a single call.
Note 1 -- If the telecommunication is by nature unilateral, for example: long distance television transmission, the term ``circuit'' is sometimes used to designate the single channel providing the facility.
Note 2 -- In telephony, use of the term ``circuit'' is generally limited to a telecommunication circuit with associated terminating equipment directly connecting two switching devices or exchanges.
Note 3 -- A telecommunication circuit does not necessarily permit simultaneous transmission in both directions.
Note 4 -- The ``go'' and ``return'' channels may be permanently associated together or may be selected from separate sets of associations together throughout the call.
Fascicle IV.1 -- Rec. M.60 3
Note 5 -- The term circuit may be preceded by other qualifiers than telecommunication e.g. telephone, digital, etc. (Rec. Q.9)
F: circuit numerique´
S: circuito; circuito digital
A circuit which transmits information signals in digital form between two exchanges. It includes termination equipment but not switching stages. (Rec. Q.9)
4 Fascicle IV.1 -- Rec. M.60
S: puntos de acceso al circuito
Four-wire access points so located that as much as possible of the international circuit is included between corresponding pairs of these access points at the two centres concerned. These points, and their relative level (with reference to the transmission reference point) are determined in each case by the Administration concerned. They are taken as the basic practical reference points of known relative level to which other transmission measurements will be related. In other words, for measurement and lining-up purposes, the level at the appropriate circuit access point is the relative level with respect to which other levels are adjusted. (Rec. M.565)
F: station directrice de circuit
S: estacion´ directora de circuito
The circuit control station is the point within the general maintenance organization for the international automatic and semi-automatic telephone service that fulfils the control responsibilities for the automatic circuits assigned to it. (Rec. M.723)
F: station sous-directrice de circuit
S: estacion´ subdirectora de circuito
The circuit sub-control station is a point within the general maintenance organization for the international automatic and semi-automatic telephone service that assists the circuit control station and fulfils the control responsibilities for a circuit section assigned to it. (Rec. M.724)
F: violation du code
S: violacion´ de codigo´
Definition for code violation:
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a) b) errors. c) |
AMI -- Two consecutive marks of the same polarity. This may not be the absolute number of errors. HDB3 -- Two consecutive bipolar violations of the same polarity. This may not be the absolute number of B6ZS -- Two consecutive marks of the same polarity excluding violations caused by the zero substitution |
code. This may not be the absolute number of errors.
d) B8ZS -- Two consecutive marks of the same polarity excluding violations caused by the zero substitution code. This may not be the absolute number of errors. (Rec. O.161)
F: cha| ne de connexion
S: conexion´
Fascicle IV.1 -- Rec. M.60 5
An association of transmission channels or circuits, switching and other functional units set up to provide a means of transfer of information between two or more points in a telecommunication network. (Rec. Q.9)
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. (Rec. G.701)
6 Fascicle IV.1 -- Rec. M.60
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F: communication internationale S: conexion´ internacional Whole of the means joining temporarily |
two subscribers and enabling them to exchange information. |
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(Rec. M.700, Red Book ) |
F: communication tel´ ephonique´ internationale
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S: conexion´ telefonica´ internacional A complete international telephone connection has three parts, as shown in Figure 1/M.560: -- an international chain -- two national systems, one on each end. (Rec. M.560) |
F: contr| le de continuite´
S: prueba de continuidad
A check made to a circuit or circuits in a connection to verify that an acceptable path (for transmission of data, speech, etc.) exists. (Rec. Q.9)
F: contr| le continu
S: comprobacion´ continua
At the time an item is active, it is being checked for good performance. If the item does not fulfill the test requirements, it is considered to have failed. (Rec. M.20)
F: station directrice
S: estacion´ directora
A control station is that point within a general maintenance organization which fulfills the control responsibilities for the circuit, group, supergroup, digital section, etc., assigned to it. (Rec. M.80)
F: reseau´ de communication de donnees´
S: red de comunicacion´ de datos
A data network which is established and operated either by Administrations or by private organizations. (Rec. X.15 Red Book )
Fascicle IV.1 -- Rec. M.60 7
F: reseau´ de communication de donnees´ (RCD)
S: red de comunicacion´ de datos (RCD)
A DCN is a communications network within the TMN which supports the DCF at reference point q3. (Rec. M.30)
8 Fascicle IV.1 -- Rec. M.60
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F: bloc de fonction de communication de donnees´ (FCD) S: bloque de funciones de comunicaciones de datos (FCD) The DCF block provides the means for data communication |
to transport information related to |
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telecommunications management between function blocks. |
Details of the DCF are given in § 5.3 of |
F: temps mort
S: tiempo muerto
The dead time is defined for the purpose of Recommendations O.61 and O.62 as the time after which the counter is ready to record another interruption following the end of the preceding interruption. (Rec. O.61)
F: faute (ou defaut)´
S: defecto
A defect is a limited interruption of the ability of an item to perform a required function. It may or may not lead to maintenance action depending on the results of additional analysis. (Rec. M.20)
F: alarme de maintenance differ´ ee´ (AMD)
S: alarma de mantenimiento diferido (AMD)
A deferred maintenance alarm is generated when immediate action is not required by maintenance personnel, e.g. when performance falls below standard but the effect does not warrant removal from service, or generally if automatic changeover to standby equipment has been used to restore service. (Rec. M.20)
F: minutes degrad´ ees´ (MD)
S: minuto degradado (MD)
A degraded minute is a group of 60 consecutive seconds, after excluding SES (severely errored seconds), with a BER (bit error ratio) of 10DlF2616 or worse.
A pseudo-degraded minute is a group of 60 consecutive seconds, after excluding SES, with at least N2 anomalies or at least one slip (when the anomaly is not a binary error). N2 is calculated similarly to N1, to detect a BER of 10DlF2616 in one minute. (Rec. M.550)
F: echo´
Fascicle IV.1 -- Rec. M.60 9
S: eco
An electric, acoustic or electromagnetic wave which arrives at a given point, after reflection or indirect propagation, with sufficient magnitude and delay for it to be perceptible at the given point, as a wave distinct from that directly transmitted. (Rec. G.601)
F: annuleur d'echo´
S: compensador de eco; cancelador de eco
A voice operated device placed in the 4-wire portion of a circuit and used for reducing near-end echo present on the send path, by subtracting an estimation of that echo from the near-end echo. (Rec. G.165)
10 Fascicle IV.1 -- Rec. M.60
F: suppresseur d'echo´
S: supresor de eco
A voice-operated device placed in the 4-wire portion of a circuit and used for inserting loss in the transmission path to suppress echo. The path in which the device operates may be an individual circuit path or a path carrying a multiplexed signal. (Rec. G.164)
F: erreur
S: error
An inconsistency between a digit in a transmitted digital signal and the corresponding digit in the received digital signal. (Rec. G.701)
F: erreur aleatoire´
S: error aleatorio
Errors distributed over the digital signal so that they can be considered statistically independent from each other. (Rec. Q.9)
F: paquet d'erreurs
S: rafaga´ de errores
A group of bits in which two successive erroneous bits are always separated by less than a given number (x ) of correct bits. The number (x ) should be specified when describing an error burst. (Rec. Q.9)
F: secondes sans erreur (SSE)
S: segundos sin error (SSE)
The ratio of the number of one-second intervals during which no bits are received in error to the total number of one-second intervals in the time interval.
Note 1 -- The length of the time interval needs to be specified.
Note 2 -- This ratio is usually expressed as a percentage. (Rec. E.800)
F: secondes erronees´ (SE)
S: segundos con error (SE)
Fascicle IV.1 -- Rec. M.60 11
An errored second is a second with at least one anomaly or defect. (Rec. M.550)
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. (Rec. I.112)
12 Fascicle IV.1 -- Rec. M.60
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F: defaillance´ S: fallo The termination of the ability of an item to perform a required function. Note -- After failure the item has a fault. (Supplement No 6, Fascicle II.3; Rec. M.20) |
F: panne; derangement´
S: averia´
The inability of an item to perform a required function, excluding that inability due to preventive maintenance, lack of external resources or planned actions.
Note -- A fault is often the result of a failure of the item itself, but may exist without prior failure. (Supplement No 6, Fascicle II.3; Rec. M.20)
F: panne intermittente
S: averia´ intermitente
A fault of an item which persists for a limited time duration following which the item recovers the ability to perform a required function without being subjected to any action of corrective maintenance.
Note -- Such a fault is often recurrent. (Supplement No 6, Fascicle II.3)
F: correction (de panne)
S: correccion´ (de una averia)´
Actions taken after a fault localization intended to restore the ability of the faulty item to perform a required function. (Supplement No 6, Fascicle II.3)
F: localisation des derangements´
S: localizacion´ (de una averia)´
The broad localization of fault consists in finding the general part of the equipment in which it exists. Fault finding consists of determining the faulty item of the equipment. (Rec. M.700, Red Book )
F: service de signalisation des derangements´ sur les circuits
S: punto de avisos de averias´ en los circuitos
Fascicle IV.1 -- Rec. M.60 13
The fault report point (circuit) is an element within the general maintenance organization for the international automatic and semi-automatic telephone service at each international centre or common for more than one international centre.
The fault report point (circuit) is equipped with all the necessary facilities and arranged in such a way that it may receive fault reports relating to one or more specifically identified circuits from different sources or make such fault reports to other points and initiate the fault localization and clearing operations.
The fault report point (circuit) will undertake its given responsibilities and functions for circuits provided by wholly analogue transmission and switching systems, and those provided by a mixture of analogue and digital systems. (Rec. M.715)
14 Fascicle IV.1 -- Rec. M.60
F: service de signalisation des derangements´ dans le reseau´
S: punto de avisos de averias´ en la red
The fault report point (network) is an element within the general maintenance organization for the international automatic and semi-automatic telephone service at each international centre or for more than one international centre. If more than one international centre is associated with a given relation, it is desirable to designate one fault report point (network) as the principle one for that relation. If such is not practical, one of the fault report points (network) or a central organization may be nominated to coordinate the activities of the various fault report points (network) that are involved.
Such arrangements provide the maintenance organization of other Administrations with a single point of contact for directing fault reports and service problems which involve more than one international centre.
While the fault report point (network) is essentially a maintenance element, it will in fact receive reports of network difficulties which may result in network management actions. In other cases, network fault reports may be explained by information already available to the network management (implementation and control point) and collected as a result of its network surveillance responsibility. Therefore, to avoid duplication of report points, considerable benefit is derived from close liaison between the fault report point (network) and the network management (implementation and control point). (See Recommendation E.413.)
The fault report point (network) is equipped with all the necessary facilities and arranged in such a way as to enable it:
a) to receive from different sources, fault reports of difficulties on the international telephone network or of problems with the international telephone service that, at the time of reporting, cannot be related to specific circuits or, in some cases, even to a specific international centre; and
b) to make such fault reports to other points and initiate the fault location and clearing operations. (Rec. M.716)
F: interface
S: interfaz
The common boundary between two associated systems. (Rec. I.112)
F: circuit automatique international
S: circuito automatico´ internacional
The whole of the international line and the outgoing and incoming equipment (or both-way equipments) proper to the automatic circuit considered. The ends of this circuit are defined by the circuit access points (see definition for circuit access points ). (Rec. M.700, Red Book )
F: cha| ne internationale
S: cadena internacional
An international chain is made up of one or more 4-wire international circuits. These are connected on a 4-wire basis to international circuits (in transit international centres) or to national systems (in terminal international centres).
Fascicle IV.1 -- Rec. M.60 15
See Figure 1/M.560. (Rec. M.560) 16 Fascicle IV.1 -- Rec. M.60
F: circuit international loue´
S: circuit internacional arrendado
The whole of the assembly of lines and apparatus connecting the renter's terminal equipment (e.g. data modem) in one country to the renter's terminal equipment in another. The interfaces between the circuit and the renter's terminal equipment will be defined by the respective Administrations. See Figure 2/M.1010. (Rec. M.1010)
F: section internationale principale
S: seccion´ principal internacional
The whole of the assembly of national and international group or supergroup sections, between the defined test access points at the two terminal international centres (see Recommendation M.460). These access points should be the same points as those for the ends of the national main sections involved in the leased link. See Figure 1/M.900. (Rec. M.900)
F: interruption; coupure (d'un service)
S: interrupcion´ (de un servicio); corte (de un servicio)
Temporary inability of a service to be provided persisting for more than a given time duration, characterized by a change beyond given limits in at least one parameter essential for service.
Note 1 -- An interruption of a service may be caused by disabled states of the items used for the service or by external reasons such as high service demands.
Note 2 -- An interruption of a service is generally an interruption of the transmission, which may be characterized by an abnormal value of power level, signal distortion, error rate, etc. (Rec. E.800)
F: interruption
S: interrupcion´
For the purpose of Recommendation O.61, an interruption shall be regarded as a break in transmission or drop in the level of a test tone below a designated threshold. (Rec. O.61)
F: interruption
S: interrupcion´
For the purpose of Recommendation O.62, an interruption shall be regarded as a break in transmission or drop in the level of a 2 kHz test tone below a designated threshold. (Rec. O.62)
Fascicle IV.1 -- Rec. M.60 17
F: ligne internationale
S: linea´ internacional
The transmission system contained between the line access points (see § 2 of Recommendation M.565) of the two terminal international centres. Where a digital international centre is interfaced by primary (or higher order) digital paths, a line access point on a per circuit basis may not exist. In such cases, the international line is deemed to end at the digital path access point nearest the international centre. (Rec. M.700, Red Book )
18 Fascicle IV.1 -- Rec. M.60
F: ligne internationale
S: linea´ internacional
The whole of the assembly of international and national circuit sections between terminal international centres. See Figure 2/M.1010. (Rec. M.1010)
F: ligne nationale
S: linea´ nacional
The whole of the assembly of national circuit sections connecting the terminal national centre to the terminal international centre. When a distinction is needed to indicate the transmission direction in one country, the expressions national sending line, that is, outgoing from the render, and national receiving line, that is, incoming to the renter, may be used. See Figure 2/M.1010. (Rec. M.1010)
S: puntos de acceso a la linea´
A point used by the CCITT to define the limits of an international line and from which measurements are made. Only one ``line access point'' exists at each end of an international line. The precise location of each such point depends on the Administration concerned. (Rec. M.565)
F: liaison internationale
S: enlace internacional
The whole of the assembly of international and national circuit sections between terminal national centres. See Figure 2/M.1010. (Rec. M.1010)
F: liaison de transmission
S: 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. (Rec. I.112)
F: delai´ logistique
S: retardo logistico;´ demora logistica´
Fascicle IV.1 -- Rec. M.60 19
The logistic delay is the period of time between the fault localization and arrival of the maintenance staff on site. In case of an ISDN, the logistic delay will depend on the type of failures and how they are reported, i.e. by prompt maintenance alarm (PMA), deferred maintenance alarm (DMA) or maintenance event information (MEI). (Rec. M.20)
F: mise en boucle
S: bucle
A mechanism incorporated into a terminal or into the network whereby the transmit path of a communication may be connected back upon the receive path.
20 Fascicle IV.1 -- Rec. M.60
S: bucle completo
A complete loopback is a layer 1 [of the open system interconnection (OSI) model] mechanism which operates on the full bit stream. At the loopback point, the received bit stream shall be transmitted back towards the transmittting station without modification. (Rec. M.125)
F: mise en boucle numerique´
S: bucle digital
A digital loopback is a mechanism incorporated into a piece of equipment whereby a bidirectional communication path may be connected back upon itself so that some or all of the information contained in the bit stream sent on the transmit path is returned on the receive path. (Rec. M.125)
F: mise en boucle logique
S: bucle logico´
A logical loopback acts selectively on certain information within a specified channel or channels and may result in some specified modification of the looped information. Logical loopbacks may be defined at any layer of the OSI model depending on the detailed maintenance procedure specified. (Rec. M.125)
F: boucle non transparente
S: bucle no transparente
A non-transparent loopback is one in which the signal transmitted beyond the loopback point (the forward signal) when the loopback is activated is not the same as the received signal at the loopback point. The forward signal may be a defined signal or unspecified. (Rec. M.125)
F: mise en boucle partielle
S: bucle parcial
A partial loopback is a layer 1 mechanism which operates on one or more specified channels multiplexed within the full bit stream. At the loopback point, the received bit stream associated with the specified channel(s) shall be transmitted back towards the transmitting station without modification. (Rec. M.125)
F: boucle transparente
S: bucle transparente
Fascicle IV.1 -- Rec. M.60 21
A transparent loopback is one in which the signal transmitted beyond the loopback point (the forward signal) when the loopback is activated, is the same as the received signal at the loopback point. (Rec. M.125)
F: application de la mise en boucle
S: aplicacion´ de bucle
The maintenance phase for which the loopback operation is used. (Rec. M.125)
22 Fascicle IV.1 -- Rec. M.60
F: mecanisme´ de commande de mise en boucle
S: mecanismo de control de bucle
The means by which the loopback is operated and released from the loopback control point. (Rec. M.125)
F: point de commande de mise en boucle
S: punto de control de bucle
The loopback control point is the point which has the ability to directly control loopbacks.
The loopback control point may receive requests for loopback operation from several loopback requesting points. (Rec. M.125)
F: point de mise en boucle
S: punto de bucle
A loopback point is the location of the loopback. (Rec. M.125)
F: point de demande de mise en boucle
S: punto de peticion´ de bucles
The loopback requesting point is the point which requests the loopback control point to operate loopbacks.
Note 1 -- Loopback requests should be subject to identification and authorization.
Note 1 -- Possible locations of loopback requesting points are: in the network, in the TMN, in maintenance service providers (MSP). (Rec. M.125)
S: secuencia de prueba de bucle
The information transmitted during the operation of the loopback in the channel or channels which are to be re-directed by the loopback. (Rec. M.125)
F: maintenabilite´
S: mantenibilidad
The ability of an item under stated conditions of use, to be retained in, or restored to, a state in which it can perform a required function, when maintenance is performed under given conditions and using stated procedures and
Fascicle IV.1 -- Rec. M.60 23
resources.
Note -- The term maintainability is used as a measure of maintainability performance. (Supplement No 6, Fascicle II.3)
F: maintenance
S: mantenimiento
The whole of the operations required for setting up and maintaining, within prescribed limits, any element entering into the setting-up of a connection. In the international automatic telephone service, maintenance is particularly concerned with circuits and automatic switching equipment. Circuit and automatic equipment maintenance includes:
a) carrying out setting-up measurements and adjustments;
b) planning and programming a maintenance scheme;
24 Fascicle IV.1 -- Rec. M.60
c) carrying out the prescribed routine preventive maintenance measurements and all other tests and measurements deemed necessary;
d) locating and clearing faults. (Rec. M.700, Red Book )
F: maintenance
S: mantenimiento
The combination of all technical and corresponding administrative actions, including supervision actions, intended to retain an item in, or restore it to, a state in which it can perform a required function. (Supplement No 6, Fascicle II.3)
F: maintenance automatique
S: mantenimiento automatico´
Maintenance accomplished without human intervention. (Supplement No 6, Fascicle II.3)
F: maintenance dirigee´
S: mantenimiento dirigido
A method to sustain a desired quality of service by the systematic application of analysis techniques using centralized supervisory facilities and/or sampling to minimize preventive maintenance and to reduce corrective maintenance. (Rec. M.20)
F: maintenance corrective
S: mantenimiento correctivo
The maintenance carried out after fault recognition and intended to restore an item to a state in which it can perform a required function. (Rec. M.20)
F: maintenance differ´ ee´
S: mantenimiento diferido
Such corrective maintenance which is not immediately initiated after a fault recognition, but is delayed in accordance with given maintenance rules. (Supplement No 6, Fascicle II.3)
F: maintenance preventive´
Fascicle IV.1 -- Rec. M.60 25
S: mantenimiento preventivo
The maintenance carried out at predetermined intervals or according to prescribed criteria and intended to reduce the probability of failure or the degradation of the functioning of an item. (Rec. M.20)
F: entite´ de maintenance (EM)
S: entidad de mantenimiento (EM)
Maintenance entities are defined by the following principles:
-- The different equipments of the telecommunications network constituting the MEs are interconnected to consecutive and easily identifiable interface points, at which points the interface conditions defined for these equipments apply and which possesses the means of detecting maintenance events and failures;
-- If the telecommunication equipment supports bidirectional transmission, normally consisting of telecommunications equipment trasmitting in both directions, then both directions are considered part of the same ME; 26 Fascicle IV.1 -- Rec. M.60
-- When a failure occurs within a network it is desirable that the maintenance alarm information indication appears at the failed maintenance entity. When this is not practical, the indication should appear at the closest possible entity;
-- Maintenance alarm information indications in an entity should not cause related alarm information indications at other entities. In the event that such indications are permitted to occur, they should clearly indicate that the failure has occurred upstream, and not in the other entities displaying the information. (Rec. M.20)
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F: assemblage d'entites´ de maintenance (AEM) S: conjunto de entidades de mantenimiento (CEM) The maintenance entity assembly is defined by the following principles: -- An MEA contains a group of MEs assembled for additional maintenance purposes; -- Principles that apply to MEs apply also to MEAs; -- An MEA may detect failures and maintenance event information which can not be detected by |
by MEs; |
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-- An MEA may provide end-to-end maintenance alarm information which can not be provided End-to-end information may be collected by using additional supervision means. (Rec. M.20) |
by MEs. |
F: sous-entite´ de maintenance (SEM)
S: subentidad de mantenimiento (SEM)
The maintenance sub-entity is defined by the following principles:
-- The different parts of an MSE constituting the MEs are interconnected at consecutive and easily identifiable interface points;
-- When a failure occurs within an MSE it is desirable that the maintenance alarm information indication appears at the failed maintenance entity containing the MSE;
-- A failed MSE should be identified as failed by the fault location process, but should lead only to the identification of the failed ME by the supervision process;
-- An MSE generally corresponds to the item which is replaceable during routine operations in the event of failure. (Rec. M.20)
F: information sur les ev´ enements´ de maintenance (IEM)
S: informacion´ de evento de mantenimiento (IEM)
This information has to be generated as a consequence of events when no immediate actions by the maintenance staff are required, because the total performance is not endangered. The maintenance actions can be performed on a scheduled basis or after the accumulation of maintenance event information indications. (Rec. M.20)
Fascicle IV.1 -- Rec. M.60 27
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F: philosophie de maintenance S: filosofia´ de mantenimiento A system of underlying principles for the organization and execution of the maintenance. |
(Supplement No 6, |
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Fascicle II.3) |
F: politique de maintenance
S: politica´ de mantenimiento
A description of the interrelationship between the maintenance echelons, the indenture levels and the levels of maintenance to be applied for the maintenance of an item. (Supplement No 6, Fascicle II.3)
28 Fascicle IV.1 -- Rec. M.60
F: fournisseur de service de maintenance (FSM)
S: proveedor de servicios de mantenimiento (PSM)
The MSP represents a group of functions, equipment and maintenance staff, that together have the responsibility for maintaining the subscriber installation or a part of the subscriber installation. A MSP cannot control the maintenance functions of the subscriber access. If authorized, it can request information from the SAMC about the subscriber access. (Rec. M.36)
F: strategie´ de maintenance
S: estrategia de mantenimiento
A plan for the organization and execution of maintenance.
F: logistique de maintenance
S: logistica´ de mantenimiento
The ability of a maintenance organization, under given conditions, to provide upon demand the resources required to maintain an item, under a given maintenance policy.
Note -- The given conditions are related to the item itself and to the conditions under which the item is used and m aintained. (Supplement No 6, Fascicle II.3)
F: entites´ de gestion
S: entidades de gestion´
Management entities are groups of capabilities that collectively provide management functions, such as operations, administration, maintenance and provisioning. For the network part, the functions may be implemented by a combination of capabilities in the network elements and operations systems. For the subscriber part, management functions may be contained within the subscriber installations. (Rec. M.36)
F: mesure
S: medida; medicion´
The numerical assessment, in suitable units, of the value of a simple or complex quantity or magnitude. (Rec. M.700, Red Book )
F: dispositif de mediation´ (DM)
Fascicle IV.1 -- Rec. M.60 29
S: dispositivo de mediacion´ (DM)
The MD is the stand alone device which performs mediation functions (MFs). MDs can be implemented as hierarchies of cascaded devices. (Rec. M.30)
F: bloc de fonction de mediation´ (FM)
S: bloque de funciones de mediacion´ (FM)
The MF block acts on information passing between network element function blocks (NEFs) and operations system function blocks (OSFs) to achieve smooth and efficient communication. Major MFs include communication control, protocol conversion and data handling, communication of primitive functions, processes involving decision making, and data storage. Details of the MF are given in § 5.4 of Recommendation M.30. (Rec. M.30)
30 Fascicle IV.1 -- Rec. M.60
F: circuit de service multiterminal
S: circuito de servicio multiterminal
A telephone or teleprinter (teletypewriter) service circuit serving more than two stations and having at least one branching point. On each branch of this circuit a certain number of stations can be connected in series. Every station served can enter the circuit individually. See Figure 2/M.100. (Rec. M.100)
F: section nationale principale
S: seccion´ principal nacional
The whole of the assembly of national group or supergroup sections containing the defined test access points at the terminal national centre and defined test access points at the terminal international centre (see Figure 1/M.900). (Rec. M.900)
S: sistema nacional
This system may comprise one or more 4-wire amplified national circuits with a 4-wire interconnection, and circuits with 2-wire connection to terminal exchanges and subscribers. See Figure 1/M.560. (Rec. M.560)
F: centre d'analyse du reseau´
S: punto de analisis´ de la red
The network analysis point is an element within the general maintenance organization for the international automatic and semi-automatic telephone service associated with one or more international centres.
It receives information concerning service quality and faults not associated with specific circuits. It analyses all relevant information to investigate the problems involved. It may request the fault report point (network) to initiate investigatory and/or remedial actions in one or more maintenance centres in the home country or via a fault report point (network) in another country.
The network analysis point acts as a single point of contact for general enquiries concerning the day-to-day maintenance of the international telephone network, as may be made by the maintenance organizations of other Administrations. (Rec. M.720)
F: element´ de reseau´ (ER)
S: elemento de red (ER)
The NE is comprised of telecommunication equipment (or groups/parts of telecomunication equipment) and support equipment that performs network element functions (NEFs) and has one or more standard Q-type interfaces. (Rec. M.30)
Fascicle IV.1 -- Rec. M.60 31
F: bloc de fonction d'el´ ement´ de reseau´ (FER)
S: bloque de funciones de elemento de red (FER)
The NEF block communicates with a telecommunication management network (TMN) for the purpose of being monitored and/or controlled. Details of the NEF are given in § 5.5 of Recommendation M.30. (Rec. M.30)
32 Fascicle IV.1 -- Rec. M.60
F: circuit de service omnibus
S: circuito de servicio omnibus´
A telephone or teleprinter (teletypewriter) service circuit serving more than two stations connected in series, any or all of which may make connection to the service circuit simultaneously. See Figure 1/M.100. (Rec. M.100)
F: centre de gestion, d'exploitation et de maintenance (CGEM)
S: centro de operaciones, administracion´ y mantenimiento (COAM)
The OAMC is an administration's centre with the responsibility for the general operation, administration and maintenance of the network. It includes both the staff and associated operations systems. The functions may be distributed among many centres and operation systems. (Rec. M.36)
S: sistema de operaciones (SO)
The OS is the stand alone system which performs operation system functions (OSFs). (Rec. M.30)
S: bloque de funciones de sistema de operaciones (FSO)
The OSF block processes information related to telecommunication management to support and/or control the realization of various telecommunication management functions. Details of the OSF are given in § 5.2 of Recommendation M.30. (Rec. M.30)
F: itineraire´ de tel´ ecommunications´
S: trayecto de telecomunicacion´
The continuous course taken by a transmission signal beween two points.
Note 1 -- This may be a physical transmission medium, a frequency band in a frequency multiplex, a time slot in a time division multiplex, etc.
Note 2 -- The path includes the transmission media and the means used for connecting them together. (Rec. Q.9)
F: conduit; conduit numerique´
Fascicle IV.1 -- Rec. M.60 33
S: trayecto digital
The whole of the means of transmitting and receiving a digital signal of specified rate between those two digital distribution frames (or equivalent) at which terminal equipments or switches will be connected. Terminal equipments are those at which signals at the specified bit rate originate or terminate.
Note 1 -- A digital path comprises one or more sections.
Note 2 -- Where appropriate, the bit rate should qualify the title.
Note 3 -- Digital paths interconnected by digital switches form a digital connection. (Rec. M.300)
F: point
S: punto
a) to identify an element within a maintenance organization where specified functions are carried out. Examples of its use in this context are: fault report point-circuit, restoration control point, testing point-transmission;
b) to identify an electrical location in a circuit, group, digital path, etc., where access is required for testing purposes. Examples of its use in this context are: circuit access point, analogue link access point, digital path access point. (Rec. M.700, Red Book )
34 Fascicle IV.1 -- Rec. M.60
F: alarme de maintenance immediate´ (AMI)
S: alarma de mantenimiento inmediato (AMI)
A prompt maintenance alarm is generated in order to initiate maintenance activities (normally immediately) by maintenance personnel to remove from service a defective equipment for the purpose of restoring good service and effecting repair of the failed equipment. (Rec. M.20)
F: caracteristiques´ de propagation
S: caracteristica´ de propagacion´
The ability of a propagation medium, in which a wave propagates without artificial guide, to transmit a signal within the given tolerances.
Note -- The given tolerances may apply to variations in signal level, noise, interference levels, etc. (Rec. E.800)
F: commutation sur liaison de reserve´
S: conmutacion´ de proteccion´
Note -- This term was used in the CCITT Red Book and has been deleted in the Blue Book . For more information, see the definitions for terms relating to direct transmission restoration (protection link switching) and automatic and semi-automatic transmission restoration (protection network switching) in Recommendation M.495.
F: point de surveillance proteg´ e´
S: punto de monotorizacion´ protegido
A protected monitoring point provides a digital interface at which it is possible to monitor the transmitted signal and to make measurements with suitable test equipments (described in Fascicle IV.4, Red Book ).
The degree of protection is considered to be sufficient when a variation of the pulse mask as given in Recommendation G.703 is less than x % with a short circuit at the protected monitoring point. (The value of x is for further study in connection with the electrical characteristics.)
Note -- The above definition is a working definition and is under study in Study Groups IV and XV.
F: qualite´ de service (QDS)
S: calidad de servicio (CDS)
The collective effect of service performances which determine the degree of satisfaction of a user of the service.
Note -- The quality of service is characterized by the combined aspects of service support performance, service operability performance, service integrity and other factors specific to each service. See Figure 1/E.800. (Rec. E.800)
Fascicle IV.1 -- Rec. M.60 35
F: redondance en attente; redondance passive; redondance en secours
S: redundancia pasiva; redundancia de reserva
That redundancy wherein one means for performing a required function is intended to operate while the alternative means are inoperative until needed. (Supplement No. 6, Fascicle II.3)
36 Fascicle IV.1 -- Rec. M.60
F: fiabilite´
S: fiabilidad
The ability of an item to perform a required function under given conditions for a given time period.
Note 1 -- It is generally assumed that the item is in a state to perform this required function at the beginning of the time interval.
Note 2 -- The term reliability is used as a measure of reliability performance. (Supplement No. 6, Fascicle II.3)
|
F: retablissement´ S: restablecimiento That event when the item regains the ability to perform a required function after a fault. |
(Supplement No. 6, |
|
Fascicle II.3) |
F: centre de commande de retablissement´ du service (CCR)
S: punto de control del restablecimiento (PCR)
The restoration control point (RCP) is an element within the general maintenance organization for the international telecommunication services. It initiates and coordinates service restoration activities in case of failures or planned outages of transmission systems in accordance with plans and ad hoc arrangements agreed by the technical services of the Administration concerned. (Rec. M.725)
F: essai de routine ou periodique´
S: pruebas periodicas;´ pruebas de rutina
Items are tested periodically, initiated either by the system or by the maintenance staff. The frequency of the test depends on the importance of the item, the failure rate and the number of items of that type present in the element. (Rec. M.20)
F: servibilite´ (d'un service)
S: servibilidad (de un servicio)
The ability of a service to be obtained, within specified tolerances and other given conditions, when requested by the user and continue to be provided for a requested duration.
Note -- Serveability performance may be subdivided into the service accessibility performance and the service retainability performance. (Rec. E.800)
Fascicle IV.1 -- Rec. M.60 37
F: service
S: servicio
A set of functions offered to a user by an organization. (Rec. E.800)
F: service support
S: servicio portador
A type of telecommunication service that provides the capability for the transmission of signals between user-network interfaces. (Rec. I.112)
38 Fascicle IV.1 -- Rec. M.60
F: service de tel´ ecommunications´
S: servicio de telecomunicacion´
That which is offered by an Administration 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. (Rec. I.112)
F: tel´ eservice´
S: teleservicio; servicio final
A type of telecommunication service that provides the complete compatibility including terminal equipment functions, for communications between users according to protocols established by agreement between Administrations. (Rec. I.112)
F: alarme de service (AS)
S: alarma de servicio (AS)
A service alarm is generated at maintenance entities at which the service originates and/or terminates to indicate that the particular service is no longer available (e.g., when a primary block is no longer available for setting up connections, the PCM muldex will extend a service alarm indication to the exchange equipment). The service alarm should be generated when performance falls below a level specified for a particular service. This level may coincide with that for initiating also a prompt maintenance alarm. (Rec. M.20)
F: accessibilite´ (d'un service)
S: accesibilidad (de un servicio)
The ability of a service to be obtained, within specified tolerances and other given conditions, when requested by the user.
Note -- This takes into account the transmission tolerance and the combined aspects of propagation performance, trafficability performance and availability performance of the related systems. (Rec. E.800)
|
F: integrit´ e´ de service S: integridad del servicio The degree to which a service is provided without excessive impairments, once obtained. Note -- This service is characterized by the transmission performance of the system. (Rec. E.800) Fascicle IV.1 -- Rec. M.60 39 |
F: facilite´ d'utilisation (d'un service)
S: facilidad de utilizacion´ (de un servicio)
The ability of a service to be successfully and easily operated by a user. (Rec. E.800)
F: continuabilite´ (d'un service)
S: retenibilidad (de un servicio)
The ability of service, once obtained, to continue to be provided under given condition for a requested duration. 40 Fascicle IV.1 -- Rec. M.60
Note -- Generally this depends on the transmission tolerances, the propagation performance and reliability performance of the related systems. For some services, for example packet switching, this also depends on the trafficability performance and the availability performance of the related systems. (Rec. E.800)
F: logistique de service
S: logistica´ del servicio
The ability of an organization to provide a service and assist in its utilization.
Note -- An example of service support performance is the ability to provide assistance in commissioning a basic service, or a supplementary service such as the call waiting service or directory enquiries service. (Rec. E.800)
F: secondes gravement erronees´ (SGE)
S: segundos con muchos errores (SME)
A severly errored second is a second with a binary error ratio [as can be measured using a QRSS (quasi-randon signal source)] greater than or equal to 10DlF2613, or at least one defect (except slips).
A pseudo-severely errored second is a second with at least N1 anomalies (when the anomaly is not a binary error, i.e. when it is an error indicator such as a code violation, CRC error, etc.), or one defect (except slips). The value of N1 is an estimator defined to correspond to a BER of 10DlF2613 in one second. N1 is a function of the accuracy of the anomaly detectors. (Rec. M.550)
F: station sous-directrice
S: estacion´ subdirectora
A sub-control station is a point within the general maintenance organization which fulfills the sub-control responsibilities of the circuit, group, supergroup, etc., digital section assigned to it. (Rec. M.90)
S: centro de mantenimiento de accesos de abonado (CMAA)
The SAMC represents a group of functions, network equipment elements and staff controlled by the Administration, which together have the responsibility and capability for maintenance functions and maintenance actions within the subscriber access. (Rec. M.36)
S: entidad de mantenimiento de accesos de abonado (EMAA)
The SAME controls the subscriber access maintenance functions and provides communications for such activities. The SAME might be distributed. (Rec. M.36)
Fascicle IV.1 -- Rec. M.60 41
F: entite´ de maintenance d'installation d'abonne´ (EMIA)
S: entidad de mantenimiento de instalaciones de abonado (EMIA)
A SIME represents a group of dedicated functions contained within the functional groups (as specified in Recommendation I.411) of the subscriber insallation (i.e. TE1 and NT2) which have the following purposes; e.g.
-- interaction with the (human) user;
-- handling of maintenance protocol from the SAME and/or MSP;
-- control of internal testing and maintenance mechanisms. (Rec. M.36)
42 Fascicle IV.1 -- Rec. M.60
S: punto de informacion´ sobre disponibilidad del sistema
The system availability information point is an element within the general maintenance organization for the international automatic and semi-automatic telephone service associated with one or more international centres. It collects and disseminates information concerning the non-availability of telecommunications systems which affects the international service. The term availability is used here in the broadest sense of the word. (Rec. M.721)
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. (Recs. G.701, I.112)
F: Administration des tel´ ecommunications´
S: Administracion´ de telecomunicaciones
An Administration, or the part of a combined postal and telecommunication Administration, concerned with the provision of telecommunication service. (Rec. D.70)
F: reseau´ de gestion des tel´ ecommunications´ (RGT)
S: red de gestion´ de las telecomunicaciones (RGT)
A telecommunications management network provides the means used to transport and process information related to management functions for the telecommunications network. (Rec. M.30)
F: centre terminal international
S: centro terminal internacional
The international centre (for example, an international repeater station) serving the renter in the country in which the renter's installation is situated. There will be two terminal international centres in an international leased group or supergroup link, or more in the case of a multiterminal link (see Figure 1/M.900) (Rec. M.900)
F: centre terminal international
S: centro terminal internacional
The terminal international centre (TIC) for leased and special circuits is the international centre serving the renter in the country in which the renter's installation is situated. It marks the interface of the international and national
Fascicle IV.1 -- Rec. M.60 43
lines and is normally located in association with a terminal international centre for the international public telephony circuits.
Some Administrations may wish to locate the TIC for international leased and special circuits indepen dently of that for public telephony circuits.
In all cases there will be a transmission maintenance point (international line) (MTP-IL) (see Recommendation M.1014) located at each TIC for leased and special circuits.
There will be two TICs in a point-to-point international circuit. There may be more in a multiterminal circuit. See Figure 2/M.1010. (Rec. M.1010)
44 Fascicle IV.1 -- Rec. M.60
F: centre terminal national
S: centro terminal nacional
The nearest national installation (for example, a repeater station) to which the renter's equipment is connected by the terminal national section. This centre will normally be staffed and equipped to make transmission measurements (see Figure 1/M.900). (Rec. M.900)
F: centre terminal national
S: centro terminal nacional
The national centre (e.g., repeater station, telephone exchange) that is:
-- nearest to the renter's installation;
-- provided with a circuit test point, so that transmission measurements can be made by appropriate staff. See Figure 2/M.1010. (Rec. M.1010)
F: section nationale terminale
S: seccion´ terminal nacional
The lines and apparatus between the defined test access points at the interface in the renter's premises and corresponding defined access points at the terminal national centre (see Figure 1/M.900). (Rec. M.900)
F: section nationale terminale
S: seccion´ terminal nacional
The lines and apparatus connecting the renter's installation with the terminal national centre concerned. There may be intermediate installations (e.g., telephone exchanges) in the terminal national section but they are assumed to have no testing facilities normally available. See Figure 2/M.1010. (Rec. M.1010)
F: essai
S: prueba
A direct practical trial in whatever manner it may be made. (Rec. M.700, Red Book )
F: essai de fonctionnement
S: prueba de funcionamiento
Fascicle IV.1 -- Rec. M.60 45
A yes or no test made to indicate whether a circuit, equipment or part of an equipment will function or not function under actual working conditions. (Rec. M.700, Red Book)
F: essai aux limites
S: prueba en los limites´
A test made to indicate whether a quantity would fall within or outside a pair of limits or boundaries. (Rec. M.700, Red Book) .bp
F: essai par ``tout ou rien''
S: prueba de viabilidad
A test made to indicate whether a quantity or magnitude would fall above or below a specified limit or boundary defined to distinguish pass and fail conditions. (Rec. M.700, Red Book)
F: centre pour les essais de la signalisation de ligne
S: punto de pruebas de la sen~ alizacion´ de linea´
The testing point (line-signalling) is an element within the general maintenance organization for the international automatic and semi-automatic telephone service at each international centre. It carries out line signalling tests on international circuits using channel-associated signalling systems, e.g., R2, No. 5, whether provided by wholly analogue transmission and switching systems or by a mixture of analogue and digital systems.
Note -- In practice, at digital international exchanges, a line access point at the circuit level may not exist when the exchanges is interfaced by primary (or higher order) digital paths. Thus, all signalling testing may need to be carried out from one location -- generally the testing point (switching and interregister signalling). Signalling tests on Signalling System No. 6 are controlled and coordinated by the administrative control (see Recommendation M.762). (Rec. M.718)
F: centre pour les essais de commutation et de la signalisation entre enregistreurs
S: punto de pruebas de conmutacion´ y sen~ alizacion´ entre registradores
The testing point (switching and interregister signalling) is an element within the general maintenance organization for the international automatic and semi-automatic telephone service at each international centre. It carries out tests concerned with switching and interregister signalling functions associated with international circuits, whether provided by wholly analogue transmission and switching systems or by a mixture of analogue and digital systems.
Note -- In practice, at digital international exchanges, a line access point at the circuit level may not exist when the exchange is interfaced by primary (or higher order) digital paths. Thus, all signalling testing may need to be carried out from one location, generally the testing point (switching and interregister signalling). This would include line signalling aspects, if any. (Rec. M.719)
46 Fascicle IV.1 -- Rec. M.60
F: centre pour les essais de la transmission
S: punto de pruebas de la transmision´
The testing point (transmission) is an element within the general maintenance organization for the international automatic and semi-automatic telephone service at each international centre. It carries out transmission testing on international circuits whether provided by wholly analogue transmission and switching systems or by a mixture of analogue and digital systems. (Rec. M.717)
|
F: traficabilite;´ capacite´ d'ecoulement´ S: aptitud para cursar trafico´ |
du trafic |
The ability of an item to meet a traffic demand of a given size and other characteristics, under given internal conditions.
Note -- Given internal conditions refer, for example, to any combination of faulty and non-faulty sub-items. (Rec. E.800)
Fascicle IV.1 -- Rec. M.60 47
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. (Recs. G.701, I.112)
F: qualite´ de transmission
S: calidad de transmision´
The level of reproduction of a signal offered to a telecommunications system, under given conditions, when this system is in an up state. (Rec. E.800)
F: retablissement´ de la transmission
S: restablecimiento de la transmision´
The different actions taken in order to restore the transmission of a signal affected by a transmission fault. (Rec. M.495)
F: trajet de transmission
S: ruta de transmision´
A transmission facility on a specific medium used by a certain number of transmission systems between two stations.
Note 1 -- For example, one cable between two stations could be regarded as one transmission route (whatever the number of systems using this cable is) and a radio system between these two points could be regarded as another route.
Note 2 -- This represents a physical route; this is different from the term ``route'' which is defined in the E.600, Q.9 and Z.341 Recommendations, which represents a logical route. (Rec. M.495)
F: diversite´ de routage de transmission
S: diversidad de rutas de transmision´
The provision of at least two links between two nodes in a transmission network which are routed over different transmission routes.
Note -- In case of a failure of one link, transmission route diversity allows some traffic between the two nodes still to be carried over the remaining link(s). (Rec. M.495)
48 Fascicle IV.1 -- Rec. M.60
F: indication de defaillance´ en amont (IDA)
S: indicacion´ de fallo atras´ (IFA)
The upstream failure indication given by a maintenance entity indicates that the signal arriving at that maintenance entity is defective. The UFI indicates that the failure has occurred upstream of this point and no unnecessary maintenance activities are initiated. (Rec. M.20)
Fascicle IV.1 -- Rec. M.60 49
ANNEX A
(to Recommendation M.60)
List of maintenance terms
This Annex presents the maintenance terms in alphabetical order together with their section number. Section No. Term
|
1 2 3 4 5 6 7 8 10 9 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 50 |
Alarm indication Anomaly Automatic Availability Bit error Bridging Channel; Channel; Circuit; Circuit; Circuit Circuit Circuit Code Connection Connection; Connection; Connection; Continuity Continuous Control Data Data Data Dead Fascicle |
Alarm indication signal (AIS) Anomaly Automatic switching equipment Availability (performance) Bit error ratio (BER) Bridging loss Channel; access channel Channel; transmission channel Circuit; digital circuit Circuit; telecommunication circuit Circuit access points Circuit control station Circuit sub-control station Code violation Connection Connection; digital connection Connection; international connection Connection; international telephone connection Continuity check Continuous checking Control station Data communication network Data communications network (DCN) Data communications function (DCF) Dead time IV.1 -- Rec. M.60 |
|
26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 |
Defect Deferred maintenance alarm (DMA) Degraded minute (DM) Echo Echo canceller Echo suppressor Error Error; random error Error burst Error free seconds (EFS) Errored seconds Exchange Failure Fault Fault; intermittent fault |
Fascicle IV.1 -- Rec. M.60 51 |
Section No. Term
|
41 42 43 44 45 46 47 48 49 51 52 50 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 52 |
Fault correction Fault Fault Fault Interface International International International International Interruption Interruption Interruption; Line; Line; Line; Line Link; Link; Logistic Loopback Loopback; Loopbback; Loopback; Loopback; Loopback; Loopback; Loopback Loopback Loopback Loopback Loopback Fascicle |
Fault correction Fault localization; localization of faults Fault report point (circuit) Fault report point (network) Interface International automatic circuit International chain International leased circuit International main section Interruption Interruption Interruption; break of service Line; international line Line; international line Line; national line Line access point Link; international link Link; transmission link Logistic delay Loopback Loopback; complete loopback Loopbback; digital loopback Loopback; logical loopback Loopback; non-transparent loopback Loopback; partial loopback Loopback; transparent loopback Loopback application Loopback control mechanism Loopback control point Loopback point Loopback requesting point IV.1 -- Rec. M.60 |
|
72 73 74 75 76 77 78 79 80 |
Loopback test pattern Maintainability (performance) Maintenance Maintenance Maintenance; automatic maintenance Maintenance; controlled maintenance Maintenance; corrective maintenance Maintenance; deferred maintenance Maintenance; preventive maintenance |
Fascicle IV.1 -- Rec. M.60 53 |
Section No. Term
|
81 82 84 85 86 87 88 83 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 105 104 106 107 108 110 109 111 54 |
Maintenance Maintenance Maintenance Maintenance Maintenance Maintenance Maintenance Maintenance Maintenance Management Measurement Mediation Mediation Multiterminal National National Network Network Network Omnibus Operation, Operations Operations Path; Path; Point Prompt Propagation Protected Protection Quality Fascicle |
Maintenance entity (ME) Maintenance entity assembly (MEA) Maintenance event information (MEI) Maintenance philosophy Maintenance policy Maintenance service provider (MSP) Maintenance strategy Maintenance sub-entity (MSE) Maintenance support (performance) Management entities Measurement Mediation device (MD) Mediation function (MF) (block) Multiterminal service circuit National main section National system Network analysis point Network element (NE) Network element function (NEF) block Omnibus service circuit Operation, administration and maintenance centre (OAMC) Operations system (OS) Operations system function (OSF) block Path; digital path Path; telecommunication path Point Prompt maintenance alarm Propagation performance Protected monitoring point Protection switching Quality of service (QOS) IV.1 -- Rec. M.60 |
|
112 113 115 114 116 117 118 119 Blanc |
Redundancy; standby Reliability (performance) Restoration control point Restoration recovery Routine or periodic testing Serveability performance Service Service; bearer service |
Fascicle IV.1 -- Rec. M.60 55 |
Section No. Term
|
120 121 123 122 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 142 142 143 144 145 146 148 149 147 150 56 |
Service; Service; Service Service Service Service Service Service Severely Sub-control Subscriber Subscriber Subscriber System Telecommunication Telecommunication Telecommunications Terminal Terminal Terminal Terminal Terminal Terminal Test Test; Test; Test; Testing Testing Testing Trafficability Fascicle |
Service; telecommunication service Service; teleservice Service accessibility performance Service alarm (SA) Service integrity Service operability performance Service retainability performance Service support performance Severely errored seconds (SES) Sub-control station Subscriber access maintenance centre (SAMC) Subscriber access maintenance entity (SAME) Subscriber installation maintenance entity (SIME) System availability information point Telecommunication Telecommunication Administration Telecommunications management network (TMN) Terminal international centre Terminal international centre Terminal national centre Terminal national centre Terminal national section Terminal national section Test Test; functional test Test; limit test Test; yes or no test Testing point (switching and interregister signalling) Testing point (transmission) Testing point (line signalling) Trafficability performance IV.1 -- Rec. M.60 |
|
151 152 153 154 155 156 Blanc |
Transmission Transmission performance Transmission restoration Transmission route Transmission route diversity Upstream failure indication (UFI) |
Fascicle IV.1 -- Rec. M.60 57 |
MONTAGE: PAGE 110 = PAGE BLANCHE 58 Fascicle IV.1 -- Rec. M.60
Fascicle IV.1 -- Rec. M.60 59