Quote:
Originally Posted by bu4man
This is part of ISUP protocol. Switch A send ISUP IAM messages with Circuit Identity Code inside it. This CIC is a reference number of voice channel. Once swich B answers with ACM (Address Complete Message), it starts playing RBT into voice channel with allocated CIC.
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Thanks
and what about the case when some announcemment has to be played?
like If call goes from Network A to Network B but the user in Network B is powered off than how is it decided that from which the network the announcent telling that user powerd-off will be played
I am asking this, as I have seem variable behaviour, like there are some cases when you hear the announcemet from network A that user is off and in some cases from network B