[Asterisk-Users] No communication channel

[Brian Schrock]

Whenever I have had this problem it was certainly a SIP/Firewall issue.
Calls will go through but audio (RTP) will not go through.

Second, using iconnect I have to add an option r (I think) to my dial
command in extensions.conf to make asterisk send ring back to the
originating phone, because I think something gets messed up between asterisk
and iconnect's sip messages.

I realise none of this directly answers your question, but I hope I have
given you enough source material that you can start looking in the right
direction.


----- Original Message ----- 
From: "Lal, Deepak (Contractor)" <dlal at harris.com>
To: <asterisk-users at lists.digium.com>
Sent: Friday, November 07, 2003 3:25 PM
Subject: [Asterisk-Users] No communication channel


> I have following setup:
>
>
AnalogPhone_1--TDM400P--Asterisk---SIP---[Softswitch]----POTS-AnalogPhone_2
>
> I can call from AnalogPhone_1 to AnalogPhone_2 and all is fine.
>
> When I call to AnalogPhone_1 from AnalogPhone_2, AnalogPhone_1 rings BUT
> I hear no ringing tone AND when someone picks up AnalogPhone_1, there is
no
> "sound" and parties on both end cannot hear each other. Seems that no
> communication channel is open!
>
> Any suggestions? Thanks - DL
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