The DSS1 CONNECT message

This message is sent by the called user to the network and by the network to the calling user, to indicate call acceptance by the called user.

Information element (IE) DirectionTypeLengthNote
Protocol discriminatorBothM1
Call referenceBothM2-*
Message typeBothM1
Bearer capabilityBothO (Note 1)4-12
Channel identificationBoth (Note 2)O (Note 3)2-*
Progress indicatorBothO (Note 4)2-4
Displayn to uO (Note 5)(Note 6)
Date/Timen to uO (Note 7)8
Signaln to uO (Note 8)2-3
Low layer compatibilityBothO (Note 9)2-18
High layer compatibilityBothO (Note 10)2-5
Connected number Both O 2-*Q951 QSIG
Connected subaddress BothO2-23Q951 QSIG

NOTES
1	The Bearer capability information element is included when the procedures of 5.11 for bearer capability selection apply.
2	Included in the network-to-user direction for support of the procedures in Annex D.
3	Mandatory if this is the first message in response to a SETUP, unless the user accepts the B-channel indicated in the SETUP message.
4	Included in the event of interworking or in connection with the provision of in-band information/patterns.
5	Included if the network provides information that can be presented to the user.
6	The minimum length is 2 octets; the maximum length is network dependent and is either 34 or 82 octets.
7	As a network option, may be included to provide date and time information to the calling user for all calls or for calls involving specific telecommunication services.
8	Included if the network optionally provides additional information describing tones.
9	Included in the user-to-network when the answering user wants to return low layer compatibility information to the calling user. Included in the network-to-user direction if the user awarded the call included a Low layer compatibility information elemen
t in the CONNECT message. Optionally included for low layer compatibility negotiation, but some networks may not transport this information element to the calling user (see Annex J).
10	The High layer compatibility information element is included when the procedures of 5.12 for high layer compatibility selection apply.