Howto:SIP/ISDN signaling interworking

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Applies To

This information applies to

  • all innovaphone products

V6 sr2 or higher.


More Information

...

Call to a busy PSTN user with inband information provided by PSTN

1. -> SIP/INVITE
2. -> ISDN/SETUP
3. <- ISDN/DISC with progress indicator
4. <- SIP/183 Session Progress

Calling user hears the inband information provided by PSTN and terminates the call then.

5. -> SIP/CANCEL
6. <- SIP/200 OK
7. -> ISDN/RELEASE
8. <- SIP/487 Request Canceled
9. -> SIP/ACK

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