In the IMS network when the Called party, after speaking  with the Caller for a while, sends a BYE request there is a possibility for reconnecting the Caller to another called party  (reconnect). The Caller is putted in a state of standby but is not disconnected.

 

Caller ------------------------à Called party 1--------------------------à Called party 2

 

The question is the following, when the second called party is contacted we need to connect the Caller to this new Called party, so how this is made? Is the Caller informed of the address of the new called party by a SIP UPDATE? Or this process is made in the MRCP that judges this call as a conference call?

 

Regards, 

                      Nuno Novo

 

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