Hello,

I want to establish ZRTP, after I am bridging 2 calls, which have been active already before.

My scenario is as follows:

• Caller A is calling Freeswitch, the call is answered and an announcement is played
• In the meantime Freeswitch calls another Party B and connects it to an internal IVR, where also announcements are played.
• Now, after a while, I decide to connect the calls together, then send an "uuid_media off <uuid>" to the calling party A leg, reinvites occur and bypass media works.
• However the 2 SIP clients (Csipsimple) do not start a ZRTP session
• If caller A calls B directly via bypass media, the ZRTP is active, by the way.
  

I suspect that ZRTP somehow should be forced or triggered. Is there a way to do that? I already invited the B leg with "zrtp_secure_media=true" and issued

  uuid_setvar 1bd508af-19c7-4e38-8621-731baaf33920 zrtp_secure_media true
  uuid_media off 1bd508af-19c7-4e38-8621-731baaf33920
to the A leg. But this did not work.

The main question should be: How can I trigger a ZRTP connection on an existing call?

-- 
With kind regards
Peter Steinbach 

Telefaks Services GmbH
mailto:lists (att) telefaks.de
Internet: www.telefaks.de

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