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Unread 03-25-2010, 02:18 AM   #1
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Default Calls drop out after 15 seconds using PSTN

I am running PBXinaFlash, and have everything working fine with normal inbound calls. However, when I receive a call placed through a SipBroker PSTN number, the call completes, but then drops after about 10-15 seconds.

In the Asterisk log, I get the following lines:

WARNING[10010] chan_sip.c: Maximum retries exceeded on transmission 57d90bf2082b8c3e777ff0ea5bf0d010@ for seqno 102 (Critical Response)

WARNING[10010] chan_sip.c: Hanging up call 57d90bf2082b8c3e777ff0ea5bf0d010@ - no reply to our critical packet.

Does anyone have a solution for this? I have set port forwarding for all the common SIP ports, but no improvement. Thanks
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