DSS1 / Long Entry

The DSS1 Message types

Sources: (4.4/Q.931 ITU-T), (Table23/143 ECMA (QSIG-BC))

Call control types:

Circuit switched calls
Packet-mode access connections
Temporary signalling conections
States associated with global call reference

Circuit switched calls

Call establishment messages

Test-set id. (L3_exceptions)	Message type	Short name	Code	Protocol
Alerting	ALERTing	ALERT	000 00001	Q.931-CM, QSIG
CallProceeding	CALL_PROCeeding	CALLP	000 00010
Connect	CONNect	CONN	000 00111	Q.931-CM, QSIG
ConnectAck	Connect_ACKnowledge	CACK	000 01111	Q.931-CM, QSIG
Progress	PROGress	PROG	000 00011	Q.931-CM, QSIG
Setup	SETUP	SETUP	000 00101
SetupAck	SETUP_ACKnowledge	SACK	000 01101	Q.931-CM, QSIG

Call information phase messages (001-----)

Test-set id. (L3_exceptions)	Message type	Short name	Code	Protocol
Hold	HOLD	HOLD	001 00100	DSS1 Q.932
Hold_Ack	HOLD acknowledge	HOLDA	001 01000	DSS1 Q.932
Hold_Reject	HOLD reject	HOLDR	001 10000	DSS1 Q.932
Resume	RESume	RESU	001 00110	Q.931-CM
Resume_Ack	RESume_ACKnowledge	RESUA	001 01110	Q.931-CM
Resume_Reject	RESume_REJect	RESUR	001 00010	Q.931-CM
Retrieve	RETRieve	RETR	001 10001	DSS1 Q.932
Retrieve_Ack	RETRieve acknowledge	RETRA	001 10011	DSS1 Q.932
Retrieve_Reject	RETRieve reject	RETRR	001 10111	DSS1 Q.932
Suspend	SUSPend	SUSP	001 00101	Q.931-CM
Suspend_Ack	SUSPend_ACKnowledge	SUSPA	001 01101	Q.931-CM
Suspend_Reject	SUSPend_REJect	SUSPR	001 00001	Q.931-CM
User_Information	( USER_INFOrmation )	UINFO	001 00000	DSS1

Call clearing messages

Test-set id. (L3_exceptions)	Message type	Short name	Code	Protocol
Disconnect	DISConnect	DISC	010 00101	Q.931-BC, QSIG
Release	RELease	REL	010 01101	Q.931-CM, QSIG
ReleaseComplete	RELease_COMplete	RELC	010 11010	Q.931-CM, QSIG
Restart	RESTart	REST	010 00110	DSS1, QSIG
Restart-ack	RESTart_ACKnowledge	RESTA	010 01110	DSS1, QSIG

Miscellaneous messages (011-----)

Test-set id. (L3_exceptions)	Message type	Short name	Code	Protocol
Congetion_Control	CONgestion_CONtrol		011 11001	DSS1
Facility	FACility	FAC	011 00010	DSS1 Q.932
FacilityReject	FacilityReject	FRJ	011 10010	DSS1 Q.932
Information	INFOrmation	INFO	011 11011	Q.931-CM, QSIG
Notify	NOTIFY	NOTI	011 01110	Q.931-CM
Register	REGister	REGI	011 00100	DSS1 Q.932
Status	STATUS	STAT	011 11101	Q.931-CM, QSIG
Status_Enquiry	STATUS_ENQuiry	STENQ	011 10101	Q.931-CM, QSIG
Segment	SEGMENT		011 00000	DSS1, QSIG