MTP LEVEL 2

TEST NUMBER:	2.1

PAGE:	1 OF 1

REFERENCE:	Q.703 SS 7, 11	STD: Fig. 8

TITLE:	Link State Control - Unexpected signal units/orders

SUB TITLE:	Unexpected signal units/orders in "Out of service" state

PURPOSE:	To check that the unexpected signal units/orders are ignored

PRE-TEST CONDITIONS:	Link out of service

CONFIGURATION:	1

TYPE OF TEST:	VAT

EXPECTED SIGNAL UNIT SEQUENCE:

SP	B

SP	A

Link

Lin

k

<---------------------------

1 - 0	SIOS

1 - 0	SIOS

---------------------------->

xxx

---------------------------->

yyy

:	start

<--------------------------

1 - 0	SIO

1 - 0	SIO

---------------------------->

<--------------------------

1 - 0	SIN

1 - 0	SIN

---------------------------->

<--------------------------

1 - 0	FISU

1 - 0	FISU

---------------------------->

TEST DESCRIPTION

1.

Check that the unexpected signal units xxx received from B are ignored without impact on the system. xxx are successively SIO, SIN, SIE, SIPO, SIB, aberrant LSSU (non-existing status, one and two octects), FISU and MSU.

2.

Check that the unexpected orders yyy = Stop from level 3 are ignored without impact

on system (if applicable).

MTP, LEVEL 2

TEST NUMBER:	2.2

PAGE:	1 OF 1

REFERENCE:	Q.703 SS 7, 11	STD: Fig. 9

TITLE:	Link State Control - Unexpected signal units/orders

SUB TITLE:	Unexpected signal units/orders in "Not aligned" state

PURPOSE:	To check that unexpected signal units/orders are ignored

PRE-TEST CONDITIONS:	Link out of service

CONFIGURATION:	1

TYPE OF TEST:	VAT

EXPECTED SIGNAL UNIT SEQUENCE:

SP	B

SP	A

Link

Lin

k

<---------------------------

1 - 0	SIOS

1 - 0	SIOS

---------------------------->

:	start

<--------------------------

1 - 0	SIO

xxx

---------------------------->

yyy

1 - 0	SIO

---------------------------->

<--------------------------

1 - 0	SIN

1 - 0	SIN

---------------------------->

<--------------------------

1 - 0	FISU

1 - 0	FISU

---------------------------->

TEST DESCRIPTION

1.

Check that the unexpected signal unit xxx received from B are ignored without impact on the system. xxx are successively SIOS, SIPO, SIB, aberrant LSSU, FISU and MSU.

2.

Check that the unexpected orders yyy received from Level 3 are ignored without impact

on the system. yyy are successively clear EM and start (if applicable).

MTP, LEVEL 2

TEST NUMBER:	2.3

PAGE:	1 OF 1

REFERENCE:	Q.703 SS 7, 11	STD: Fig. 9

TITLE:	Link State Control - Expected signal units/orders

SUB TITLE:	Unexpected signal units/orders in "Aligned" state

PURPOSE:	To check that unexpected signal units/orders are ignored

PRE-TEST CONDITIONS:	Link out of service

CONFIGURATION:	1

TYPE OF TEST:	VAT

EXPECTED SIGNAL UNIT SEQUENCE:

SP	B

SP	A

Link

Lin

k

<---------------------------

1 - 0	SIOS

1 - 0	SIOS

---------------------------->

:	start

<--------------------------

1 - 0	SIO

1 - 0	SIO

---------------------------->

<--------------------------

1 - 0	SIN

xxx

---------------------------->

yyy

1 - 0	SIN

---------------------------->

<--------------------------

1 - 0	FISU

1 - 0	FISU

---------------------------->

TEST DESCRIPTION

1.

Check that the unexpected signal units xxx received from B are ignored without impact on the system. xxx are successively SIO, SIPO, SIB, aberrant LSSU, FISU and MSU.

2.

Check that the unexpected orders yyy received from Level 3 are ignored without impact

on the system. yyy are successively clear EM and start (if applicable).

MTP, LEVEL 2

TEST NUMBER:	2.4

PAGE:	1 OF 1

REFERENCE:	Q.703 SS 7, 11	STD: Fig. 9

TITLE:	Link State Control - Unexpected signal units/orders

SUB TITLE:	Unexpected signal units/orders in "Proving" state

PURPOSE:	To check that unexpected signal units/orders are ignored

PRE-TEST CONDITIONS:	Link out of service

CONFIGURATION:	1

TYPE OF TEST:	VAT

EXPECTED SIGNAL UNIT SEQUENCE:

SP	B

SP	A

Link

Lin

k

<---------------------------

1 - 0	SIOS

1 - 0	SIOS

---------------------------->

:	start

<--------------------------

1 - 0	SIO

1 - 0	SIO

---------------------------->

<--------------------------

1 - 0	SIN

1 - 0	SIN

---------------------------->

xxx

--------------------------->

yyy

<--------------------------

1 - 0	FISU

1 - 0	FISU

---------------------------->

TEST DESCRIPTION

1.

Check that the unexpected signal units xxx received from B are ignored without impact on the system. xxx are successively SIPO, SIB, aberrant LSSU, FISU and MSU.

2.

Check that the unexpected orders yyy received from Level 3 are ignored without impact

on the system. yyy are successively clear EM and start (if applicable).

Note - The reception of SIB in "Initial alignment" state may possibly cause link

failure after transferring to "In service" state because of the T6 expiration.

MTP, LEVEL 2

TEST NUMBER:	2.5

PAGE:	1 OF 1

REFERENCE:	Q.703 SS 7, 11	STD: Fig. 8

TITLE:	Link State Control - Unexpected signal units/orders

SUB TITLE:	Unexpected signal units/orders in "Aligned ready" state

PURPOSE:	To check that unexpected signal units/orders are ignored

PRE-TEST CONDITIONS:	Link out of service

CONFIGURATION:	1

TYPE OF TEST:	VAT

EXPECTED SIGNAL UNIT SEQUENCE:

SP	B

SP	A

Link

Lin

k

<---------------------------

1 - 0	SIOS

1 - 0	SIOS

---------------------------->

:	start

<--------------------------

1 - 0	SIO

1 - 0	SIO

---------------------------->

<--------------------------

1 - 0	SIN

1 - 0	SIN

---------------------------->

<--------------------------

1 - 0	FISU

xxx

---------------------------->

yyy

1 - 0	FISU

---------------------------->

TEST DESCRIPTION

1.

Check that the unexpected signal units xxx received from B are ignored without impact on the system. xxx are successively SIB and aberrant LSSU.

2.

Check that the unexpected orders yyy received from level 3 are ignored without impact

on the system. yyy are successively set EM, clear EM, clear LPO and

Start (if applicable).

Note - The reception of SIB in "Aligned ready" state may possibly cause link failure

after transferring to "In service" state because of the T6 expiration.

MTP, LEVEL 2

TEST NUMBER:	2.6

PAGE:	1 OF 1

REFERENCE:	Q.703 SS 7, 11	STD: Fig. 8

TITLE:	Link State Control - Unexpected signal units/orders

SUB TITLE:	Unexpected signal units/orders in "Aligned not ready" state

PURPOSE:	To check that unexpected signal units/orders are ignored

PRE-TEST CONDITIONS:	Link out of service

CONFIGURATION:	1

TYPE OF TEST:	VAT

EXPECTED SIGNAL UNIT SEQUENCE:

SP	B

SP	A

Link

Lin

k

<--------------------------

1 - 0	SIOS

1 - 0	SIOS

--------------------------->

:	set LPO

:	start

<-------------------------

1 - 0	SIO

1 - 0	SIO

--------------------------->

<-------------------------

1 - 0	SIN

1 - 0	SIN

--------------------------->

<-------------------------

1 - 0	SIPO

xxx

--------------------------->

yyy

1 - 0	FISU

--------------------------->

<-------------------------

1 - 0	SIPO

TEST DESCRIPTION

1.

Check that the unexpected signal units xxx received from B are ignored without impact on the system. xxx are successively SIB and aberrant LSSU.

2.

Check that the unexpected orders yyy received from level 3 are ignored without impact

on the system. yyy are successively set EM, clear EM, clear LPO and

Start (if applicable).

MTP, LEVEL 2

TEST NUMBER:	2.7

PAGE:	1 OF 1

REFERENCE:	Q.703 SS 7, 11	STD: Fig. 8

TITLE:	Link State Control - Unexpected signal units/orders

SUB TITLE:	Unexpected signal units/orders in "In service" state

PURPOSE:	To check unexpected signal units/orders are ignored

PRE-TEST CONDITIONS:	Link in service

CONFIGURATION:	1

TYPE OF TEST:	VAT

EXPECTED SIGNAL UNIT SEQUENCE:

SP	B

SP	A

Link

Lin

k

<---------------------------

1 - 0	FISU

1 - 0	FISU

---------------------------->

aberrant LSSU

---------------------------->

yyy

<--------------------------

1 - 0	FISU

1 - 0	FISU

---------------------------->

TEST DESCRIPTION

1.

Check that an aberrant LSSU received from B is ignored without impact on the system.

2.

Check that the unexpected orders yyy received from level 3 are ignored without impact

on the system. yyy are successively set EM, clear EM, clear LPO and

Start (if applicable).

MTP, LEVEL 2

TEST NUMBER:	2.8

PAGE:	1 OF 1

REFERENCE:	Q.703 SS 7, 11	STD: Fig. 8

TITLE:	Link State Control - Unexpected signal units/orders

SUB TITLE:	Unexpected signal units/orders in "Processor outage" state

PURPOSE:	To check that the unexpected signal units/orders are ignored

PRE-TEST CONDITIONS:	Link in service

CONFIGURATION:	1

TYPE OF TEST:	VAT

EXPECTED SIGNAL UNIT SEQUENCE:

SP	B

SP	A

Link

Lin

k

:	set LPO

<--------------------------

1 - 0	SIPO

xxx

---------------------------->

yyy

1 - 0	FISU

---------------------------->

TEST DESCRIPTION

1.

Check that the unexpected signal units xxx received from A are ignored without impact on the system. xxx are successively SIB and aberrant LSSU.

2.

Check that the unexpected orders yyy received from level 3 are ignored without impact

on the system. yyy are successively set EM, clear EM and Start (if applicable).

MTP, LEVEL 2

TEST NUMBER:	3.1

PAGE:	1 OF 1

REFERENCE:	Q.703 SS 4, 10.2	STD: Fig. 8

TITLE:	Transmission failure

SUB TITLE:	Link aligned ready (Break Tx path)

PURPOSE:	To test the response to a transmission failure - detected by SUERM - when in

"Aligned ready" state

PRE-TEST CONDITIONS:	Link out of service

CONFIGURATION:	1

TYPE OF TEST:	VAT

EXPECTED SIGNAL UNIT SEQUENCE:

SP	B

SP	A

Link

Lin

k

<---------------------------

1 - 0	SIOS

1 - 0	SIOS

---------------------------->

:	start

<--------------------------

1 - 0	SIO

1 - 0	SIO

---------------------------->

<--------------------------

1 - 0	SIN

1 - 0	SIN

---------------------------->

<--------------------------

1 - 0	FISU

:	break Tx

<--------------------------

1 - 0	SIOS

TEST DESCRIPTION

1.

Break Tx path at B when in "Aligned ready" state, check that the SUERM detects the failure and the link is taken out of service.

2.

Repeat test, break Tx at A.

MTP, LEVEL 2

TEST NUMBER:	3.2

PAGE:	1 OF 1

REFERENCE:	Q.703 S 5.3	STD: Fig. 8

TITLE:	Transmission failure

SUB TITLE:	Link aligned ready (Corrupt FIBs - Basic)

PURPOSE:	To check the response to a link failure after corruption of two FIBs - detected

by reception control - while in Aligned ready State.

PRE-TEST CONDITIONS:	Aligned ready

CONFIGURATION:	1

TYPE OF TEST:	VAT

EXPECTED SIGNAL UNIT SEQUENCE:

SP	B

SP	A

Link

Lin

k

<---------------------------

1 - 0	FISU

1 - 0	FISU corrupt FIB

(FIB+FSN=7F)

---------------------------->

1 - 0	FISU corrupt FIB

(FIB+FSN=7F)

---------------------------->

<--------------------------

1 - 0	SIOS

TEST DESCRIPTION

1.

Check that receipt of two FISUs at A with corrupt FIB's at link aligned ready state causes the link to be taken out of service.

MTP, LEVEL 2

TEST NUMBER:	3.3

PAGE:	1 OF 1

REFERENCE:	Q.703 SS 8, 10.3	STD: Fig. 8

TITLE:	Transmission failure

SUB TITLE:	Link aligned not ready (Break Tx path)

PURPOSE:	To test the response to a break in the transmission path - detected by

SUERM - in "Aligned not ready" state

PRE-TEST CONDITIONS:	Link out of service

CONFIGURATION:	1

TYPE OF TEST:	VAT

EXPECTED SIGNAL UNIT SEQUENCE:

SP	B

SP	A

Link

Lin

k

<---------------------------

1 - 0	SIOS

1 - 0	SIOS

---------------------------->

:	set LPO

:	start

<--------------------------

1 - 0	SIO

1 - 0	SIO

---------------------------->

<--------------------------

1 - 0	SIN

1 - 0	SIN

---------------------------->

<--------------------------

1 - 0	SIPO

:	break Tx

<--------------------------

1 - 0	SIOS

TEST DESCRIPTION

1.

Set LPO at A.

2.

Start link alignment at A.

3.

In link aligned not ready state break Tx at B and check link is taken out of service.

4.

Repeat test for B with break in Tx at A, check link is taken out of service.

5.

The Tx path must be broken before Timer T1 expires.