Hello everybody,
I'd like you to ask about transferring an answered B2B Call to another User/Number
Scenario:
-Party A (a Lync incompatible device, connected to a Gateway, matched to a Lync User) places a call to Party B
-The Call to Party B (a Lync User/Client) is established via BackToBackCall
-The Callee (Party B, Lync Client) likes to transfer the answered Call to another User (Party C, who may be connected via Lync, or connection needs to be established via another BackToBackCall)
<-- I DON'T GET THIS TO WORK
I get it to work, that the transferred Party C is ringing and the call (with calling inforation of Party A) is established by creating a new AV-Call or using the Call from the Accept()-Method of the TransferReceived EventArgs, but i don't get it to connect to the original call (placed by Party A). Neither BeginTransfer on the new Call to C, nor the Eventhandler sender works as selftransfer or unattended transfer.
The Exception when using the Eventhandler sender is: 603-call is referring allready.
The exception when using a new call is: Cannot send transfer request as the remote participant does not support it.
Whenn i establish the AV-Call from the Accept()-Method of the EventArgs the original (B2B)Call is terminated.
maybe someone can me send in the right direction?
ciao Ralf