MTP LEVEL 2

TEST NUMBER: 	2.1	PAGE:	1 OF 1		
REFERENCE:	Q.703 §§ 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	Link		
	<--------------------------	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 §§ 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	Link		
	<--------------------------	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 §§ 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	Link		
	<--------------------------	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 §§ 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	Link		
	<--------------------------	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 §§ 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	Link		
	<--------------------------	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 §§ 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	Link		
	<-------------------------	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 §§ 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	Link		
	<--------------------------	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 §§ 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	Link		
				: 	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 §§ 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	Link		
	<--------------------------	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 § 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	Link		
	<--------------------------	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 §§ 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	Link		
	<--------------------------	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.