A DSS1 SETUP üzenet

SS7-ISUP equivalent: Initial Address

This message is sent by the calling user to the network and by the network to the called user to initiate call establishment.

Information elementDirectionTypeLengthNote
Protocol discriminatorBothM1
Call referenceBothM2-*
Message typeBothM1
Sending completeBothO 1Included if the user or the network optionally indicates that all information necessary for call establishment is included in the SETUP message.
Repeat indicatorBothO 1The Repeat indicator IE is included immediately before the first Bearer capability IE when the bearer capability negotiation procedure is used .
Bearer capabilityBothM (Note 3)4-12 May be repeated if the bearer capability negotiation procedure is used (see Annex L). For bearer capability negotiation, two Bearer capability IE may be included in descending order of priority, i.e., highest priority first. Although support multiple Bearer capability IE may not be supported on all networks, on networks that do support it, and through suitable subscription arrangements, two Bearer capability IE may be included (see 5.11). When they are not preceded by a Repeat indicator IE, they are included in ascending order of priority.
Channel identificationBothO (Note 4)2-*
Progress indicatorBothO (Note 5)2-4
Facility O Q-SIG
Network specific facilitiesBothO (Note 6)2-*
Displayn -> uO (Note 7)(Note 8)
Keypad facilityu -> nO (Note 9)2-34
Signaln -> uO (Note 10)2-3
Calling party numberBothO (Note 11)2-*
Calling party subaddressBothO (Note 12)2-23
Called party numberBothO (Note 13)2-*
Called party subaddressBothO (Note 14)2-23
Transit network selectionu -> nO (Note 15)2-*
Repeat indicatorBothO (Note 16)1
Low layer compatibilityBothO (Note 17)2-18
High layer compatibilityBothO (Note 18)

NOTES: