- CPG message is sent by the switch towards originator.
- When the switch receives the setup, the call is forwarded.
- When the message is sent it is signaled that the call is progress.
- During the setup or active phase of a call, a message is sent.
- This signifies the relayed to the originating has occurred.
Monday, 2 May 2016
What is the need of CPG message in ISUP protocol ?
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