[Asterisk-Dev] SIP / H.323 Gateway with Asterisk

[Aaron S. Joyner]

Aaron S. Joyner wrote:

> We are using SIP phones to make calls through Asterisk, out an H.323 
> connection.  Depending on the end point, some times these calls do not 
> pass audio.  The call setup appears normal, everything about the 
> negotiation appears to be correct, but no audio is passed out of 
> asterisk, in either direction.  From a packet dump we can see that 
> audio is coming in from both sides, but no audio is being sent out 
> from Asterisk.

<lots of detail snipped, see previous post>

I'm posting again because we have the better part of a resolution.  
There were two problems at work.  The reason we couldn't talk to the 
remote asterisk box was a codec issue, which was easily resolved.  The 
reason we couldn't talk to the remote Cisco box was less 
straight-forward.  We tried it with the oh323 driver, and it worked 
fine.  But it still does not work with the nufone asterisk/channels/h323 
driver.  We are going to work on it some more today in hopes to get it 
working with the nufone driver - as I think it's simply a minor 
configuration issue.  If I come up with any big revelations, I'll be 
sure to post them back here.  But at the worst, for now, it's working 
with the oh323 channel driver.

-- 
Aaron S. Joyner
System Administrator
Intrex.net Internet Services
(919) 573-5488 x102