MTP LEVEL 2

TEST NUMBER:	3.4

PAGE:	1 OF 1

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

TITLE:	Transmission failure

SUB TITLE:	Link aligned not 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 not ready"

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

1 - 0	FISU corrupt FIB

(FIB+FSN=7F)

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

1 - 0	FISU corrupt FIB

(FIB+FSN=7F)

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

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

1 - 0	SIOS

TEST DESCRIPTION

1.

Set LPO at A.

2.

Start link alignment at A.

3.

Send two corrupt FISUs (corrupt FIBs) on link aligned not ready.

4.

Check link is taken out of service at A.

MTP LEVEL 2

TEST NUMBER:	3.5

PAGE:	1 OF 1

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

TITLE:	Transmission failure

SUB TITLE:	Link in service (Break Tx path)

PURPOSE:	To test the response to a transmission failure when the link is "In service"

PRE-TEST CONDITIONS:	Link in service

CONFIGURATION:	1

TYPE OF TEST:	VAT, CPT

EXPECTED SIGNAL UNIT SEQUENCE:

SP	B

SP	A

Link

Lin

k

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

1 - 0	FISU

1 - 0	FISU

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

:	break Tx

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

SIOS

TEST DESCRIPTION

1.

Break Tx at B, check SIOS returned from A.

2.

Repeat test, break at A.

MTP LEVEL 2

TEST NUMBER:	3.6

PAGE:	1 OF 1

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

TITLE:	Transmission failure

SUB TITLE:	Link in service (Corrupt FIBs - Basic)

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

by reception control - while "In service"

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

(FIB+FISN=FF)

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

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 FIBs at link in service state causes the link to be taken out of service.

MTP LEVEL 2

TEST NUMBER:	3.7

PAGE:	1 OF 1

REFERENCE:	Q.703 S 8, 10.2	STD:	Fig. 8

TITLE:	Transmission failure

SUB TITLE:	Link in processor outage (Break Tx path)

PURPOSE:	To test the response to a transmission failure when the link is "Processor outage"

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

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

:	set LPO

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

1 - 0	SIPO

:	break Tx

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

1 - 0	SIOS

TEST DESCRIPTION

1.

Break Tx path at B when in "Processor outage" 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:	3.8

PAGE:	1 OF 1

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

TITLE:	Transmission failure

SUB TITLE:	Link in processor outage (Corrupt FIBs - Basic)

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

by reception control - while in "Processor outage"

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

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

:	set LPO

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

1 - 0	SIPO

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 FIBs on processor outage state causes the link to be taken out of service.

MTP LEVEL 2

TEST NUMBER:	4.1

PAGE:	1 OF 1

REFERENCE:	Q.703 S 8	STD:	Fig. 10

TITLE:	Processor outage control

SUB TITLE:	Set and clear LPO while link in service

PURPOSE:	To check the ability to perform correctly when LPO is set and recovered

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

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

:	set LPO

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

1 - 0	SIPO

:	clear LPO

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

1 - 0	FISU

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

1 - 0	MSU

(FIB+FSN=80)

TEST DESCRIPTION

1.

Set LPO at A while link in service.

2.

Check message is discarded.

3.

Clear LPO at A.

4.

Check MSU is sent correctly.

MTP LEVEL 2

TEST NUMBER:	4.2

PAGE:	1 OF 1

REFERENCE:	Q.703 S 8	STD:	Fig. 10

TITLE:	Processor outage control

SUB TITLE:	RPO during LPO

PURPOSE:	To test the response to RPO is set and cleared when "LPO"

PRE-TEST CONDITIONS:	Link in service. PO set at B

CONFIGURATION:	1

TYPE OF TEST:	VAT

EXPECTED SIGNAL UNIT SEQUENCE:

SP	B

SP	A

Link

Lin

k

:	set LPO

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

1 - 0	SIPO

1 - 0	SIPO

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

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

1 - 0	SIPO

:	clear LPO

1 - 0	FISU

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

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

1 - 0	SIPO

TEST DESCRIPTION

1.

Set LPO at A.

2.

Clear LPO at B.

3.

Check is SIPO sent from A.

MTP LEVEL 2

TEST NUMBER:	4.3

PAGE:	1 OF 1

REFERENCE:	Q.703 S 8	STD:	Fig. 10

TITLE:	Processor outage control

SUB TITLE:	Clear LPO when "Both processor outage"

PURPOSE:	To test the response to LPO, RPO recovered when "Both processor outage"

PRE-TEST CONDITIONS:	PO set at A and B

CONFIGURATION:	1

TYPE OF TEST:	VAT

EXPECTED SIGNAL UNIT SEQUENCE:

SP	B

SP	A

Link

Lin

k

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

1 - 0	SIPO

1 - 0	SIPO

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

:	clear LPO

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

1 - 0	FISU

:	clear LPO

1 - 0	FISU

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

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

1 - 0	FISU

TEST DESCRIPTION

1.

Clear LPO at A.

2.

Clear LPO at B.

3.

Check is FISU sent from A.

MTP LEVEL 2

TEST NUMBER:	5.1

PAGE:	1 OF 1

REFERENCE:	Q.703 S 4.1	STD:	Fig. 11

TITLE:	SU delimitation, alignment, error detection and correction

SUB TITLE:	More than seven '1's between MSU opening and closing flags

PURPOSE:	To test the signal unit delimitation, alignment, and error detection action

on receipt of an MSU containing seven or more consecutive '1's

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

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

1 - 0	corrupt MSU

(FIB+FSN=80)

(containing seven

consecutive '1's)

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

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

1 - 0	FISU

(BSN unchanged)

1 - 0	FISU

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

TEST DESCRIPTION

1.

Send a corrupt MSU at B containing seven consecutive '1's.

2.

Check that A discards the signal unit, and goes into octet counting mode.

3.

On reception of a correct FISU, check that A leaves the octet counting mode and remains

in the "in service" state.

MTP LEVEL 2

TEST NUMBER:	5.2

PAGE:	1 OF 1

REFERENCE:	Q.703 S 4.1	STD:	Fig. 11

TITLE:	SU delimitation, alignment, error detection and correction

SUB TITLE:	Greater than maximum signal unit length

PURPOSE:	To test the signal unit delimitation, alignment, error detection action on

receipt of signal unit greater than the maximum length

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

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

1 - 0	corrupt MSU

(FIB+FSN=80)

(signal unit length

> max. allowed)

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

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

1 - 0	FISU

(BSN unchanged)

1 - 0	FISU

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

TEST DESCRIPTION

1.

Send corrupt MSU at B with maximum length plus extra bits and good sumcheck.

2.

Check A discards the signal unit, and goes into octet counting mode.

3.

On reception of a correct FISU, check that A leaves the octet counting mode and remains

in the "in service" state.

MTP LEVEL 2

TEST NUMBER:	5.3

PAGE:	1 OF 1

REFERENCE:	Q.703 S 4.1	STD:	Fig. 11

TITLE:	SU delimitation, alignment, error detection and correction

SUB TITLE:	Below minimum signal unit length

PURPOSE:	To test the signal unit delimitation, alignment and error detection action

on receipt of signal unit less than the minimum length

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

(BIB+BSN=FF)

1 - 0	FISU

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

1 - 0	corrupt MSU

(FIB+FSN=80)

(signal unit less

than 6 octets)

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

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

1 - 0	FISU

(BSN unchanged)

1 - 0	FISU

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

TEST DESCRIPTION

1.

Generate a corrupt MSU at B of less than 6 octets (i.e. less than 5 octets between flags).

2.

Check A discards the signal unit, and goes into octet counting mode.

3.

On reception of a correct FISU, check that A leaves the octet counting mode and remains

in the "in service" state.

MTP LEVEL 2

TEST NUMBER:	5.4

PAGE:	1 OF 1

REFERENCE:	Q.703 S 2	STD:	Fig. 11

TITLE:	SU delimitation, alignment, error detection and correction

SUB TITLE:	Reception of single and multiple flags between FISUs

PURPOSE:	To check that single and multiple flags between FISUs can be received

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

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

case 1

FISU F FISU

case 2

FISU F F FISU

n( 2)

F: Flag

n=number of flags

1 - 0	FISU

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

TEST DESCRIPTION

1.

Check that single and n flags, case 1 and case 2 respectively, can be received.