[Asterisk-Users] IP GSM Gateway is giving uncomplete SIP signalization to PRI interface - can I somehow avoid that in Asterisk ?

[Matt Riddell]

Robert Rozman wrote:
> Hi,
> 
> I have following setup :         PBX <-> Voxip from Parlay <-PRI->
> Asterisk <-SIP-> SIP IP GSM Gateway (2n)
> 
> on outgoing call from pbx through Voxip and to IP GSM gateway : latter
> only responds with SIP session progress but no SIP Ringing message when
> connection starts to ring, so Voxip is hanging up line on approx 13sec
> timeout.... I know we could try simulate ringing with r in dial, but
> that would be quite wrong, cause GSM gateways sometime take more time to
> establish connection, so user gets false ringing signal... Can we
> somehow interfere with Asterisk and generate SIP messages to fool Voxip
> from hanging up the line ?

You could Answer() the call in Asterisk before passing it off to the gateway.

-- 
Cheers,

Matt Riddell
_______________________________________________

http://www.sineapps.com/news.php (Daily Asterisk News - html)
http://freevoip.gedameurope.com (Free Asterisk Voip Community)
http://www.sineapps.com/rssfeed.php (Daily Asterisk News - rss)