Welltech Dialogic SS7 Protocols ISUP Manuale Utente Pagina 42

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Section 6 Interface to Application
42
The following optional parameters are supported in ANSI mode only:
Business group
Generic digits
Information indicators
Network transport
Notification indicator
Redirection information
6.5.22 Progress Request
This primitive is used by the application to convey information about the
progress of the call.
Message type
CPG (Call Progress Message)
Mandatory parameters
Event information
Optional parameters
Access transport
Automatic Congestion Level
Backward call indicators
Cause indicators
Call reference
Optional backward call indicators
Redirection number
Remote operations
Service activation
Transmission medium used
User to user indicators
May be used to accept user to user information service 1, 2 or 3
User to user information
Discarded if user to user service 1 has not been accepted
The following optional parameters are supported in ITU-T mode only:
Access delivery information
Application transport
Backward GVNS
Call diversion information
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