Transferred Calls from PSTN Disconnecting CM 4.1(3)

Unanswered Question

CallManager 4.1(3). Here is the scenario. Calls from the PSTN hit Unity-PSTN Caller Dials Extension-call transferred and answered on PhoneA-PhoneA transfers to PhoneB and Answered-PhoneB transfers PSTN call back to PhoneA-Phone A answers but call Drops either in a Blind or Supervised transfer. Happens everytime. Attached is a debug from the PSTN. Reading the debug isdn q931 all I can notice at the end was this: Protocol error; unspecified after the last transfer. Any thoughts would be great. Thanks.

I have this problem too.
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Avner Izhar Thu, 10/18/2007 - 07:31

Night be something related to the ccm service parameter called 'Forward Maximum Hop Count'. What value do you have in there?

ptassoul Tue, 11/13/2007 - 07:20

Hello. We are seeing exact same issue. Did you ever find a solution? Thanks much!!


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