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c#sipvoiplyncucma
grmihel
grmihel

Reputation: 846

Combine 2 established calls by using B2BUA

In a UCMA application, I want to bridge two already established calls, by using a B2B call to remain in control of both calls.

Does anyone know how you can bridge two established calls through a B2BUA of UCMA 4.0?

As far as I know, B2BUA needs incoming-idle state scenario. In my scenario I'm having established-established scenario. I'm sure I could turn one of the calls as incoming state, by initiating a Self-transfer. But I can't figure out how to turn the 2nd call into a state that I can use for the B2B-bridging.

Any ideas are appreciated

Upvotes: 1

Views: 188

Answers (1)

w5l
w5l

Reputation: 5766

Have you looked into UCMA "call replacement"? Rather than transferring to a new destination, you send a "REPLACES" header. The mandatory Greenlee blog on the subject is here: http://blog.greenl.ee/2011/08/20/switching-lync-call-participants-with-ucma/

This in combination with a self transfer on one of the two sides might be able to resolve your problems.

In case it doesn't, you might have to put both calls into a conference.

Upvotes: 0

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