TUP LEVEL 4 TEST SPECIFICATION
TEST NUMBER:	5.3.3	
REFERENCE:	Q.724 § 6.4.3b	
TITLE:	Timers	
SUBTITLE:	T4	
PURPOSE:	To check the value of timer T4	
PRE–TEST CONDITIONS:	
a)	Signalling point A should be able to determine that the proper number of digits have not been received.	
b)	Arrange the data in signalling point B such that a clear forward signal is not returned in response to an address incomplete message.	
c)	Arrange the data in signalling point B such that a clear forward signal is not returned in response to a call failure signal.	
CONFIGURATION:	1	TYPE OF TEST:	VAT	TYPE OF SP:	SP	
EXPECTED MESSAGE SEQUENCE:	
SP	A		SP	B	
	<-------------------------	IAM	
ADI	–	 ------------------------->		
		½			
	T3	½	4–15 seconds			
	½
	–			
CFL	½	 ------------------------->		
	½			
	T4	½	4–15 seconds			
	½			
CFL	–	 ------------------------->		
	
TEST DESCRIPTION	
1.	Attempt to make a call from SP B to SP A but do not send the last digit.
Record the message sequence using a signal monitor.	
2.	CHECK A:	WAS THE CALL FAILURE SIGNAL REPEATED BETWEEN 4–15 SECONDS AFTER SENDING THE INITIAL CALL FAILURE SIGNAL? . . . . . .	
3.	CHECK B:	WAS THE MESSAGE SEQUENCE AS ABOVE? . . . . . .	

TUP LEVEL 4 TEST SPECIFICATION
TEST NUMBER:	5.3.4	
REFERENCE:	Q.724 § 6.4.3b	
TITLE: 	Timers	
SUBTITLE:	T5	
PURPOSE:	To check the value of timer T5	
PRE–TEST CONDITIONS:	
a)	Signalling point A should be able to determine that the proper number of digits have not been received.	
b)	Arrange the data in signalling point B such that a clear forward signal is not returned in response to an address incomplete message.	
c)	Arrange the data in signalling point B such that a clear forward signal is not returned in response to a call failure signal.	
CONFIGURATION:	1	TYPE OF TEST:	VAT	TYPE OF SP:	SP	
EXPECTED MESSAGE SEQUENCE:	
SP	A			SP	B	
			<-------------------------	IAM		
ADI	T3	–	4–15 seconds	 ------------------------->		
			
CFL	T4	–	4–15 seconds	 ------------------------->		
			
CFL	T4	4–15 seconds	 ------------------------->		
			
CFL	T5	1 minute		 ------------------------->		
		
RSC			------------------------->		
	
TEST DESCRIPTION	
1.	Attempt to make a call from SP B to SP A but do not send the last digit.
Record the message sequence using a signal monitor.	
2.	CHECK A:	WAS THE CALL FAILURE SIGNAL REPEATED BETWEEN 4–15 SECONDS AFTER SENDING THE INITIAL CALL FAILURE SIGNAL? . . . . . .	
3.	CHECK B:	WAS THE CALL FAILURE SIGNAL REPEATED FOR A PERIOD OF ONE MINUTE? . . . . . .	
4.	CHECK C:	WAS A RESET CIRCUIT SIGNAL SENT ON THE EXPIRY OF TIMER T5? . . . . . .	
5.	CHECK D:	WAS THE MESSAGE SEQUENCE AS ABOVE? . . . . . .	

TUP LEVEL 4 TEST SPECIFICATION
TEST NUMBER:	5.3.5	
REFERENCE:	Q.724 § 6.2.3	
TITLE:	Timers	
SUBTITLE:	T6	
PURPOSE:	To check the value of timer T6	
PRE–TEST CONDITIONS:	Arrange the data in signalling point B such that a release guard is not returned in response to a clear forward signal	
CONFIGURATION:	1	TYPE OF TEST:	VAT	TYPE OF SP:	SP	
EXPECTED MESSAGE SEQUENCE:	
SP	A		SP	B	
IAM	 ------------------------->		
	<-------------------------	ACM	
	––––––––––––	Ringing tone	
CLF	–	 ------------------------->		
	½			
	T6	½			
	½	4-15 seconds  			
	½			
CLF	–	 ------------------------->		
	
TEST DESCRIPTION	
1.	Make a call from SP A to SP B, record the message sequence using a signal monitor.	
2.	CHECK A:	IS RINGING TONE HEARD? . . . . . .	
3.	The calling party should clear the call.	
4.	CHECK B:	WAS THE CLEAR FORWARD SIGNAL REPEATED BEFORE 4–15 SECONDS AFTER SENDING THE INITIAL CLEAR FORWARD SIGNAL? . . . . . .	
5.	CHECK C:	WAS THE MESSAGE SEQUENCE AS ABOVE? . . . . . .	

TUP LEVEL 4 TEST SPECIFICATION
TEST NUMBER:	5.3.6	
REFERENCE:	Q.118	
TITLE:	Q.118 timers	
SUBTITLE:	Answer signal not received	
PURPOSE:	To verify that if an answer signal is not received within 2–4 minutes after receiving an address complete signal the connection is released by the outgoing signalling point	
PRE–TEST CONDITIONS:	The called party should not answer the call	
CONFIGURATION:	1	TYPE OF TEST:	VAT and CPT	TYPE OF SP:	SP	
EXPECTED MESSAGE SEQUENCE:	
SP	A		SP	B	
IAM	 ------------------------->		
	–	<-------------------------	ACM	
	½			
	½	2–4 minutes			
	½			
CLF	–	 ------------------------->		
	<-------------------------	RLG	
	
TEST DESCRIPTION	
1.	Attempt to make a call from SP A to SP B. Record the message sequence using a signal monitor.	
2.	CHECK A:	IS RINGING TONE HEARD? . . . . . .	
3.	The called party should NOT answer the call.	
4.	CHECK B:	WAS THE CLEAR FORWARD SEND WITHIN A PERIOD OF 2 To 4 MINUTES SIGNAL? . . . . . .	
5.	CHECK C:	IS THE CIRCUIT IDLE? . . . . . .	
6.	CHECK D:	WAS THE MESSAGE SEQUENCE AS ABOVE? . . . . . .	
		
	Note – The timer need only be run at the outgoing international exchange.	

TUP LEVEL 4 TEST SPECIFICATION
TEST NUMBER:	5.3.7	
REFERENCE:	Q.118	
TITLE:	Q.118 timers	
SUBTITLE:	Delay in clearing by calling party	
PURPOSE:	Verify that the call will be released if the calling party has not cleared the call within 1–2 minutes after the called party clears	
PRE–TEST CONDITIONS:	The called party should not answer the call	
CONFIGURATION:	1	TYPE OF TEST:	VAT and CPT	TYPE OF SP:	SP	
EXPECTED MESSAGE SEQUENCE:	
SP	A		SP	B	
IAM	 ------------------------->		
	<-------------------------	ACM	
	–––––––––––––	Ringing tone	
	<-------------------------	ANC	
Speech	–––––––––––––	Speech	
	–	<-------------------------	CBK	
	½	1–2 minutes			
CLF	–	 ------------------------->		
	<-------------------------	RLG	
	
TEST DESCRIPTION	
1.	Make a call from SP A to SP B.
Record the message sequence using a signal monitor.	
2.	CHECK A:	IS RINGING TONE HEARD? . . . . . .	
3.	The called party should answer the call.	
4.	CHECK B:	IS SPEECH POSSIBLE? . . . . . .	
5.	The called party should clear the call.	
6.	CHECK C:	WAS THE CLEAR FORWARD SENT WITHIN A PERIOD OF BETWEEN 1 AND 2 MINUTES? . . . . . .	
7.	CHECK D:	IS THE CIRCUIT IDLE? . . . . . .	
8.	CHECK E:	WAS THE MESSAGE SEQUENCE AS ABOVE? . . . . . .	

TUP LEVEL 4 TEST SPECIFICATION
TEST NUMBER:	5.4.1	
REFERENCE:	Q.724 § 1.15	
TITLE:	Reset of circuits during a call	
SUBTITLE:	Of an outgoing circuit	
PURPOSE:	To verify that on receipt of a reset circuit signal the call is immediately released	
PRE–TEST CONDITIONS:	
a)	Called termination is free	
CONFIGURATION:	1	TYPE OF TEST:	VAT	TYPE OF SP:	SP	
EXPECTED MESSAGE SEQUENCE:	
SP	A		SP	B	
IAM	 ------------------------->		
	<-------------------------	ACM	
	––––––––––––	Ringing tone	
	<-------------------------	ANC	
Speech	––––––––––––	Speech	
	<-------------------------	RSC	
CLF	 ------------------------->		
	<-------------------------	RLG	
	
TEST DESCRIPTION	
1.	Make a call for SP A to SP B.
Record the message sequence using a signal monitor.	
2.	CHECK A:	IS RINGING TONE HEARD? . . . . . .	
3.	The called party should answer the call.	
4.	CHECK B:	IS SPEECH POSSIBLE? . . . . . .	
5.	Arrange for SP B to send a reset–circuit signal.	
6.	CHECK C:	IS THE CIRCUIT IDLE? . . . . . .	
7.	CHECK D:	WAS THE MESSAGE SEQUENCE AS ABOVE? . . . . . .	

TUP LEVEL 4 TEST SPECIFICATION
TEST NUMBER:	5.4.2	
REFERENCE:	Q.724 § 1.15	
TITLE:	Reset of circuit during call	
SUBTITLE:	Of an incoming circuit	
PURPOSE:	To verify that the circuit reset procedure can be correctly initiated during a call	
PRE–TEST CONDITIONS:	
a)	Called termination is free	
CONFIGURATION:	1	TYPE OF TEST:	VAT	TYPE OF SP:	SP	
EXPECTED MESSAGE SEQUENCE:	
SP	A		SP	B	
	<-------------------------	IAM	
ACM	 ------------------------->		
Ringing tone	––––––––––––		
ANC	 ------------------------->		
Speech	––––––––––––	Speech	
	<-------------------------	RSC	
RLG	 ------------------------->		
	
TEST DESCRIPTION	
1.	Make a call from SP B to SP A.
Record the message sequence with a signal monitor.	
2.	CHECK A:	IS RINGING TONE HEARD? . . . . . .	
3.	The called party should answer the call.	
4.	CHECK B:	IS SPEECH POSSIBLE? . . . . . .	
5.	Arrange for SP B to send a reset circuit signal.	
6.	CHECK C:	IS THE CIRCUIT IDLE? . . . . . .	
7.	CHECK D:	WAS THE MESSAGE SEQUENCE AS ABOVE? . . . . . .	

TUP LEVEL 4 TEST SPECIFICATION
TEST NUMBER:	5.5.1	
REFERENCE:	Q.724 § 6.5	
TITLE:	Receipt of unreasonable information during a call	
SUBTITLE:	Received	
PURPOSE:	To verify that the action taken by a signalling point upon receipt of unreasonable signalling information is as stated in Q.724 Section 6.5	
PRE–TEST CONDITIONS:	
a)	Circuit idle and unblocked	
CONFIGURATION:	1	TYPE OF TEST:	VAT	TYPE OF SP:	SP	
EXPECTED MESSAGE SEQUENCE:	
SP	A		SP	B	
IAM	 ------------------------->		
	<-------------------------	ACM	
	––––––––––––	Ring tone	
	<-------------------------	See Item 3 below	
	<-------------------------	ANC	
	––––––––––––	Speech	
	<-------------------------	See Item 6 below	
CLF	 ------------------------->		
	<-------------------------	RLG	
	
TEST DESCRIPTION	
1.	Make a call from SP A to SP B.
Record the message sequence using a signal monitor.	
2.	CHECK A:	IS RINGING TONE HEARD? . . . . . .	
3.	Send a message which would be unreasonable at this point in the call (i.e. COT) and confirm that the message is discarded.	
4.	The called party should answer the call.	
5.	CHECK B:	IS SPEECH POSSIBLE? . . . . . .	
6.	SP B should send such a message which would be unreasonable at this point in the call (i.e. ACM) and confirm that the message is discarded.	
7.	The calling point should clear the call.	
8.	CHECK C:	IS THE CIRCUIT IDLE? . . . . . .	
9.	CHECK D:	WAS THE MESSAGE AS SHOWN ABOVE	
		
Note – This test covers only some of the ambiguous messages which could be received.

TUP LEVEL 4 TEST SPECIFICATION
TEST NUMBER:	6.1.1	
REFERENCE:	Q.724 § 7.3	
TITLE:	Continuity check call	
SUBTITLE:	COT applied on an outgoing circuit	
PURPOSE:	To verify that a call can be set up on a circuit requiring a continuity check	
PRE–TEST CONDITIONS:	Arrange the data in signalling point A such that a continuity check is required on this circuit	
CONFIGURATION:	1	TYPE OF TEST:	VAT and CPT	TYPE OF SP:	SP	
EXPECTED MESSAGE SEQUENCE:	
SP	A		SP	B	
IAM	 ------------------------->		
Check tone	––––––––––––|		
	–––––––––––– 		
COT	 ------------------------->		
	<-------------------------	ACM	
	––––––––––––	Ringing tone	
	<-------------------------	ANC	
Speech	 ––––––––––––	Speech	
CLF	 ------------------------->		
	<-------------------------	RLG	
	
TEST DESCRIPTION	
1.	Make a call from SP A to SP B.
Record the message sequence using a signal monitor.	
2.	CHECK A:	IS RINGING TONE HEARD? . . . . . .	
3.	The called party should answer the call	
4.	CHECK B:	IS SPEECH POSSIBLE? . . . . . .	
5.	The calling party should clear the call.	
6.	CHECK C:	IS THE CIRCUIT IDLE? . . . . . .	
7.	CHECK D:	WAS THE MESSAGE SEQUENCE AS SHOWN ABOVE? . . . . . .	
8.	For validation testing repeat this test in the reverse direction.	

TUP LEVEL 4 TEST SPECIFICATION
TEST NUMBER:	6.1.2	
REFERENCE:	Q.724 § 7.3	
TITLE:	Special call set up	
SUBTITLE:	COT applied on a previous circuit	
PURPOSE:	To verify that a call can be set up if a continuity check is being performed on a previous circuit	
PRE–TEST CONDITIONS:	Arrange the data in signalling point A such that the signalling information indicates that a continuity check has been performed on a previous circuit	
CONFIGURATION:	1	TYPE OF TEST:	VAT and CPT	TYPE OF SP:	SP	
EXPECTED MESSAGE SEQUENCE:	
SP	A		SP	B	
IAM	 ------------------------->		
	½		
delay while check performed on previous circuit	
	½		
COT	 ------------------------->		
	<-------------------------	ACM	
	–––––––––––	Ringing tone	
	<-------------------------	ANC	
Speech	–––––––––––	Speech	
CLF	 ------------------------->		
	<-------------------------	RLG	
	
TEST DESCRIPTION	
1.	Make a call from SP A to SP B.
Record the message sequence using a signal monitor.	
2.	CHECK A:	IS RINGING TONE HEARD? . . . . . .	
3.	The called party should answer the call.	
4.	CHECK B:	IS SPEECH POSSIBLE? . . . . . .	
5.	The calling party should clear the call.	
6.	CHECK C:	IS THE CIRCUIT IDLE? . . . . . .	
7.	CHECK D:	WAS THE MESSAGE SEQUENCE AS ABOVE? . . . . . .	
8.	CHECK E:	WAS THE CONTINUITY CHECK INDICATOR SET TO A BINARY VALUE OF TWO (MESSAGE INDICATOR BITS E and F IN IAM)? . . . . . .	
9.	For validation testing repeat this test in the reverse direction.	

TUP LEVEL 4 TEST SPECIFICATION
TEST NUMBER:	6.1.3	
REFERENCE:	Q.724 § 7.5	
TITLE:	Continuity check call	
SUBTITLE:	COT on a satellite circuit	
PURPOSE:	To verify that a continuity check can be performed on a satellite circuit	
PRE–TEST CONDITIONS:	Arrange the data in signalling point A such that the call is routed over a satellite circuit, with a continuity check applied for	
CONFIGURATION:	1	TYPE OF TEST:	VAT and CPT	TYPE OF SP:	SP	
EXPECTED MESSAGE SEQUENCE:	
SP	A		SP	B	
IAM	 ------------------------->		
Check tone	–––––––––––– |		
	––––––––––––		
COT	 ------------------------->		
	<-------------------------	ACM	
	––––––––––––	Ringing tone	
	<-------------------------	ANC	
Speech	––––––––––––	Speech	
CLF	 ------------------------->		
	<-------------------------	RLG	
	
TEST DESCRIPTION	
1.	Make a call from SP A to SP B.
Record the message sequence using a signal monitor.	
2.	CHECK A:	IS RINGING TONE HEARD? . . . . . .	
3.	The called party should answer the call.	
4.	CHECK B:	IS SPEECH POSSIBLE? . . . . . .	
5.	The calling party should clear the call.	
6.	CHECK C:	IS THE CIRCUIT IDLE? . . . . . .	
7.	CHECK D:	WAS THE MESSAGE SEQUENCE AS ABOVE? . . . . . .	
8.	CHECK E:	WAS THE SATELLITE INDICATOR BIT IN THE IAM SET TO 1? . . . . . .	
9.	For validation testing repeat this test in the reverse direction.	

TUP LEVEL 4 TEST SPECIFICATION
TEST NUMBER:	6.1.4	
REFERENCE:	Q.724 § 6.1	
TITLE:	Continuity check call	
SUBTITLE:	Calling party clears during COT	
PURPOSE:	To verify that the calling party can successfully clear during the continuity check phase of the call	
PRE–TEST CONDITIONS:	Arrange the data in signalling point B such that a continuity check is applied on this call	
CONFIGURATION:	1	TYPE OF TEST:	VAT	TYPE OF SP:	SP	
EXPECTED MESSAGE SEQUENCE:	
SP	A		SP	B	
IAM	 ------------------------->		
Check tone	–––––––––––		
CLF	 ------------------------->		
	<-------------------------	RLG	
	
TEST DESCRIPTION	
1.	Make a call from SP A to SP B.
Record the message sequence with a signal monitor.	
2.	The calling party should clear the call during the continuity check phase.	
3.	CHECK A:	IS THE CIRCUIT IDLE? . . . . . .	
4.	CHECK B:	WAS THE MESSAGE SEQUENCE AS ABOVE? . . . . . .	
5.	For validation testing repeat this test in the reverse direction.	

TUP LEVEL 4 TEST SPECIFICATION
TEST NUMBER:	6.1.5	
REFERENCE:	Q.724 § 7.3	
TITLE:	Continuity check call	
SUBTITLE:	Delay of through connect	
 PURPOSE:	To verify that the switching though of the speech path is delayed until the residual check–tone has propagated through the return of the speech path	
PRE–TEST CONDITIONS:	
a)	The called termination is free	
b)	Arrange the data in signalling point A such that a continuity check is applied on this call	
CONFIGURATION:	1	TYPE OF TEST:	VAT and CPT	TYPE OF SP:	SP	
EXPECTED MESSAGE SEQUENCE:	
SP	A		SP	B	
IAM	 ------------------------->		
Check tone	––––––––––––|		
	––––––––––––		
COT	 ------------------------->		
	<-------------------------	ACM	
	––––––––––––	Ringing tone	
	<-------------------------	ANC	
Speech	––––––––––––	Speech	
CLF	 ------------------------->		
	<-------------------------	RLG	
	
TEST DESCRIPTION	
1.	Make a call from SP A to SP B.
Record the message sequence using a signal monitor.	
2.	CHECK A:	WAS THE CONTINUITY CHECK TONE HEARD BY EITHER CALLED OR CALLING PARTY? . . . . . .	
3.	CHECK B:	IS RINGING TONE HEARD? . . . . . .	
4.	The called party should answer the call.	
5.	CHECK B:	IS SPEECH POSSIBLE? . . . . . .	
6.	The calling party should clear the call.	
7.	CHECK C:	IS THE CIRCUIT IDLE? . . . . . .	
8.	CHECK D:	WAS THE MESSAGE SEQUENCE AS SHOWN ABOVE? . . . . . .	
9.	For validation testing repeat this test in the reverse direction.	

TUP LEVEL 4 TEST SPECIFICATION
TEST NUMBER:	6.1.6	
REFERENCE:	Q.724 § 7.3	
TITLE:	Continuity check call	
SUBTITLE:	COT unsuccessful	
PURPOSE:	To verify that a repeat attempt of the continuity check is made on the failed circuit	
PRE–TEST CONDITIONS:	Ensure that no backward tone is detected within the specified timeout	
CONFIGURATION:	1	TYPE OF TEST:	VAT	TYPE OF SP:	SP	
EXPECTED MESSAGE SEQUENCE:	
SP	A		SP	B	
IAM	 ------------------------->		
Check tone	––––––––––– |
	––––––––		
			
CCF	–	 ------------------------->		
		½			
	T9	½	1–10 seconds			
	½			
CCR	–	 ------------------------->		
Check tone	–––––––––––– |
	–––––––––		
CCF	–	 ------------------------->		
		½			
	T10	½	1–3 minutes		Maintenance staff alerted	
	½			
CCR	–	 ------------------------->		
Check tone	––––––––––– |
	––––––––		
			
TEST DESCRIPTION	
1.	Initiate the continuity test call procedure at SP A.
Record the message sequence using a signal monitor.	
2.	CHECK A:	WAS THE SECOND CONTINUITY CHECK INITIATED WITHIN 1 TO 10 SECONDES? . . . . . .	
3.	CHECK B:	WERE THE MAINTENANCE STAFF ALERTED ON FAILURE OF THE SECOND CONTINUITY CHECK? . . . . . .	
4.	CHECK C:	WAS THE CHECK REPEATED AT INTERVALS OF 1 TO 3 MINUTES? . . . . . .	
5.	CHECK D:	WAS THE MESSAGE SEQUENCE AS ABOVE? . . . . . .	
		
	Note 1 – The repeated check will only finish when continuity is detected.	
		
	Note 2 – On failure of the COT an automatic repeat attempt will be made –see test No. 6.2.5.	

TUP LEVEL 4 TEST SPECIFICATION
TEST NUMBER:	6.1.7	
REFERENCE:	Q.724 § 7.3	
TITLE:	Continuity check call	
SUBTITLE:	COT received on an incoming circuit	
PURPOSE:	To verify that a call can be set up on an incoming circuit requiring a continuity check	
PRE–TEST CONDITIONS:	Arrange the data in signalling point such that a continuity check is required on this circuit	
CONFIGURATION:	1	TYPE OF TEST:	VAT and CPT	TYPE OF SP:	SP	
EXPECTED MESSAGE SEQUENCE:	
SP	A		SP	B	
	<-------------------------	IAM	
	|––––––––––––	Check tone	
	––––––––––––		
	<-------------------------	COT	
ACM	 ------------------------->		
Ringing tone	––––––––––––		
ANC	 ------------------------->		
Speech	––––––––––––	Speech	
	<-------------------------	CLF	
RLG	 ------------------------->		
	
TEST DESCRIPTION	
1.	Make a call from SP B to SP A.
Record the message sequence using a signal monitor.	
2.	CHECK A:	IS THE RINGING TONE HEARD? . . . . . .	
3.	The called party should answer the call.	
4.	CHECK B:	IS SPEECH POSSIBLE? . . . . . .	
5.	The calling party should clear the call.	
6.	CHECK C:	IS THE CIRCUIT IDLE? . . . . . .	
7.	CHECK D:	WAS THE MESSAGE SEQUENCE AS ABOVE? . . . . . .	
8.	For validation testing repeat this test in the reverse direction.	

TUP LEVEL 4 TEST SPECIFICATION
TEST NUMBER:	6.2.1	
REFERENCE:	Q.724 § 3	
TITLE:	Automatic repeat attempt	
SUBTITLE:	Dual seizure	
PURPOSE:	To verify that an automatic repeat attempt will be made on detection of a dual seizure	
PRE–TEST CONDITIONS:	Arrange the signalling point data such that SP B is the controlling exchange	
CONFIGURATION:	1	TYPE OF TEST:	VAT	TYPE OF SP:	SP	
EXPECTED MESSAGE SEQUENCE:	
SP	A		SP	B	
IAM	(cic=x)	--------->	<---------	IAM	(cic=x)	
ACM	(cic=x)	------------------------->		
Ringing tone	––––––––––––		
ANC	(cic=x)	------------------------->		
Speech	––––––––––––	Speech	
IAM	(cic=y)	------------------------->		
	<-------------------------	ACM	(cic=y)	
	––––––––––––	Ringing tone	
	<-------------------------	ANC	(cic=y)	
Speech	 ––––––––––––	Speech	
CLF	(cic=y)	------------------------->		
	<-------------------------	RLG	(cic=y)	
	<-------------------------	CLF	(cic=x)	
RLG	(cic=x)	------------------------->		
TEST DESCRIPTION	
1.	Simultaneously transmit an IAM (containing the same value of cic) from each end of the link for a both way circuit.
Record the message sequence using a signal monitor	
2.	CHECK A:	IS RINGING TONE HEARD ON THE CALL ORIGINATED FROM SP B? . . . . . .	
3.	The called party at SP A should answer the call.	
4.	CHECK B:	IS SPEECH POSSIBLE? . . . . . .	
5.	CHECK C:	WAS A REPEAT ATTEMPT MADE BY SP A, WITH A DIFFERENT VALUE OF CIC IN THE IAM? . . . . . .	
6.	CHECK D:	IS RINGING TONE HEARD ON THE CALL ORIGINATED FROM SP A? . . . . . .	
7.	The called party at SP B should answer the call.	
8.	CHECK E:	IS SPEECH POSSIBLE? . . . . . .	
9.	Clear both calls down.	
10.	CHECK F:	ARE THE CIRCUITS IDLE? . . . . . .	
11.	CHECK G:	WAS THE MESSAGE SEQUENCE AS ABOVE? . . . . . .	
	Note – The message sequence may not be as shown above.	

TUP LEVEL 4 TEST SPECIFICATION
TEST NUMBER:	6.2.2	
REFERENCE:	Q.724 § 3	
TITLE:	Automatic repeat attempt	
SUBTITLE:	Circuit reset	
PURPOSE:	To verify that an automatic repeat attempt will be made on receipt of circuit reset after sending of an initial address message and before a backward signal has been received	
PRE–TEST CONDITIONS:	
a)	Arrange the data in signalling point B such that a circuit reset signal is sent in response to the initial address message of the first call request	
b)	The called termination should be free	
CONFIGURATION:	1	TYPE OF TEST:	VAT	TYPE OF SP:	SP	
EXPECTED MESSAGE SEQUENCE:	
SP	A		SP	B	
IAM	 ------------------------->		
	<-------------------------	RSC	
CLF	 ------------------------->		
	<-------------------------	RLG	
IAM	 ------------------------->		
	<-------------------------	ACM	
	 ––––––––––––	Ringing tone	
	<-------------------------	ANC	
Speech	 ––––––––––––	Speech	
CLR	 ------------------------->		
	<-------------------------	RLG	
	
TEST DESCRIPTION	
1.	Make a call for SP A to SP B.
Record the message sequence using a signal monitor.	
2.	CHECK A:	IS RINGING TONE HEARD? . . . . . .	
3.	The called party should answer the call.	
4.	CHECK B:	IS SPEECH POSSIBLE? . . . . . .	
5.	The calling party should clear the call.	
6.	CHECK C:	IS THE CIRCUIT IDLE? . . . . . .	
7.	CHECK D:	WAS THE MESSAGE SEQUENCE AS ABOVE? . . . . . .	
	Note – The message sequence may not be as shown above.	

TUP LEVEL 4 TEST SPECIFICATION
TEST NUMBER:	6.2.3	
REFERENCE:	Q.724 § 3	
TITLE:	Automatic repeat attempt	
SUBTITLE:	Reception of unreasonable signalling information	
PURPOSE:	To verify that a repeat attempt will be made on receipt of unreasonable signalling information after sending the initial address message and before one of the backward signals has been received	
PRE–TEST CONDITIONS:	
a)	Arrange the data in signalling point B such that unreasonable signalling information (see note below) is returned in response to the initial address message of the first call request	
b)	The called termination should be free	
CONFIGURATION:	1	TYPE OF TEST:	VAT	TYPE OF SP:	SP	
EXPECTED MESSAGE SEQUENCE:	
SP	A		SP	B	
IAM	 ------------------------->		
	<-------------------------	see Note 1 below	
RSC	 ------------------------->		
	<-------------------------	RLG	
IAM	 ------------------------->		
	<-------------------------	ACM	
	––––––––––––	Ringing tone	
	<-------------------------	ANC	
Speech	––––––––––––	Speech	
CLF	 ------------------------->		
	<-------------------------	RLG	
TEST DESCRIPTION	
1.	Make a call for SP A to SP B.
Record the message sequence using a signal monitor.	
2.	CHECK A:	IS RINGING TONE HEARD? . . . . . .	
3.	The called party should answer the call.	
4.	CHECK B:	IS SPEECH POSSIBLE? . . . . . .	
5.	The calling party should clear the call.	
6.	CHECK C:	IS THE CIRCUIT IDLE? . . . . . .	
7.	CHECK D:	WAS THE MESSAGE SEQUENCE AS ABOVE? . . . . . .	
	Note 1 – This may be any message that if received at this point would be either ambiguous or inappropriate.	
	Note 2 – The message sequence may not be as shown above.	

TUP LEVEL 4 TEST SPECIFICATION
TEST NUMBER:	6.2.4	
REFERENCE:	Q.724 § 3	
TITLE:	Automatic repeat attempt	
SUBTITLE:	Blocking of a circuit	
PURPOSE:	To verify that an automatic repeat attempt will be made on receipt of the blocking signal after sending an initial address message and before any backward messages have been received	
PRE–TEST CONDITIONS:	Arrange the data in signalling point B such that a blocking signal is returned in response to the initial address message of the first call request	
CONFIGURATION:	1	TYPE OF TEST:	VAT	TYPE OF SP:	SP	
EXPECTED MESSAGE SEQUENCE:	
SP	A		SP	B	
IAM	 ------------------------->		
	<-------------------------	BLO	
BLA	 ------------------------->		
CLF	 ------------------------->		
	<-------------------------	RLG	
IAM	 ------------------------->		
	<-------------------------	ACM	
	––––––––––––	Ringing tone	
	<-------------------------	ANC	
Speech	––––––––––––	Speech	
CLF	 ------------------------->		
	<-------------------------	RLG	
	
TEST DESCRIPTION	
1.	Make a call for SP A to SP B.
Record the message sequence using a signal monitor.	
2.	CHECK A:	IS RINGING TONE HEARD? . . . . . .	
3.	The called party should answer the call.	
4.	CHECK B:	IS SPEECH POSSIBLE? . . . . . .	
5.	The calling party should clear the call.	
6.	CHECK C:	IS THE CIRCUIT IDLE? . . . . . .	
7.	CHECK D:	WAS THE MESSAGE SEQUENCE AS ABOVE? . . . . . .	
	Note – The message sequence may not be as shown above.	

TUP LEVEL 4 TEST SPECIFICATION
TEST NUMBER:	6.2.5	
REFERENCE:	Q.724 § 6	
TITLE:	Automatic repeat attempt	
SUBTITLE:	Continuity check failure	
PURPOSE:	To verify that an automatic repeat attempt will be made if on continuity check failure	
PRE–TEST CONDITIONS:	Arrange the data in signalling point B such that check tone is not returned within the specified limits to the first call request	
CONFIGURATION:	1	TYPE OF TEST:	VAT	TYPE OF SP:	SP	
EXPECTED MESSAGE SEQUENCE:	
SP	A		SP	B	
IAM	 ------------------------->		
Check tone	–––––––––––|
	––––––––		
CCF	 ------------------------->		
A repeat of the continuity check of the failed circuit will be made within 1–10 seconds see Q.724 Section 7.3	
IAM	 ------------------------->		
Check tone	––––––––––––|		
	––––––––––––		
	<-------------------------	ACM	
	––––––––––––	Ringing tone	
	<-------------------------	ANC	
Speech	 ––––––––––––	Speech	
CLF	 ------------------------->		
	<-------------------------	RLG	
	
TEST DESCRIPTION	
1.	Make a call for SP A to SP B.
Record the message sequence using a signal monitor.	
2.	CHECK A:	IS RINGING TONE HEARD? . . . . . .	
3.	The called party should answer the call.	
4.	CHECK B:	IS SPEECH POSSIBLE? . . . . . .	
5.	The calling party should clear the call.	
6.	CHECK C:	IS THE CIRCUIT IDLE? . . . . . .	
7.	CHECK D:	WAS THE MESSAGE SEQUENCE AS ABOVE? . . . . . .	
	Note – The message sequence may not be as shown above.	

TUP LEVEL 4 TEST SPECIFICATION
TEST NUMBER:	6.3.1	
REFERENCE:	Q.724 § 2.5	
TITLE:	Dual seizure	
SUBTITLE:	Dual seizure for controlling side	
PURPOSE:	To verify that on detection of dual seizure, the call initiated by the controlling signalling point is completed	
PRE–TEST CONDITIONS:	Arrange the signalling point data such that SP B is the controlling signalling point	
CONFIGURATION:	1	TYPE OF TEST:	VAT	TYPE OF SP:	SP	
EXPECTED MESSAGE SEQUENCE:	
SP	A		SP	B	
IAM	 --------->	<---------	IAM	
ACM	 ------------------------->		
	––––––––––––	Ringing tone	
ANC	 ------------------------->		
Speech	––––––––––––	Speech	
CLF	 ------------------------->		
	<-------------------------	RLG	
	
TEST DESCRIPTION	
1.	Simultaneously transmit an IAM (containing the same value of cic) from each end of the link for a both way circuit.
Record the message sequence using a signal monitor.	
2.	CHECK A:	IS RINGING TONE HEARD ON THE CALL ORIGINATED FROM SP B? . . . . . .	
3.	The called party at SP A should answer the call.	
4.	CHECK B:	IS SPEECH POSSIBLE? . . . . . .	
5.	The calling party at SP B should clear the call.	
6.	CHECK C:	IS THE CIRCUIT IDLE? . . . . . .	
7.	CHECK D:	WAS THE MESSAGE SEQUENCE AS ABOVE? . . . . . .	
8.	CHECK E:	WAS A REPEAT ATTEMPT MADE BY SP A ON ANOTHER CIRCUIT? . . . . . .	
9.	Repeat this test in the reverse direction.