Re: [Openbts-discuss] No Audio on calls that don't "answer" - maybe an asterisk issue.

[David B. <da...@ra...>]

This might have something to do with "early media", which means audio streams that start before a call is fully connected. OpenBTS does not start transferring codec frames to the handset until it receives the 200 OK in the SIP domain (for the MOC case). This is the case even in very early assignment. If these failed calls do not produce a 200 OK response, there will be no audio to the handset.


Range Networks, Inc.
560 Brannan St.
San Francisco, CA

-----Original Message-----
From: keith <wh...@gm...>
Date: Sun, 18 Dec 2011 14:38:31 
To: ope...@li... List o<ope...@li...>
Subject: [Openbts-discuss] No Audio on calls that don't "answer" - maybe an
	asterisk issue.

Hi, If I call a non-answering number (like a cell phone that is
powered-off, or an out of service number) from my SIP phone attached
to my asterisk, I can hear the audio message from the telco telling me
that the phone is not available.

If I call from a cell phone attached to OpenBTS, the call happens, but
they audio message is not heard on the line.

Is this a known issue? I can add more details, but if it is a known
issue then you know what I'm talking about :)

What would need to happen to fix this?

cheers,

k.

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