[Asterisk-Users] PSTN intercepted announcement

[Michael Ulitskiy]

As I understand you have PRI connected to asterisk directly.
In my case there is a h323 gateway between them and the h323
driver must recognize the "not in service" signal and made asterisk
aware of it so that asterisk could relay the conditions/recorded messages
to SIP phones. From my experience so far, oh323 driver does it, h323 does not.
Please correct me if I'm wrong.
Thanks

Michael

On Friday 21 November 2003 03:33 am, Josh Rollyson wrote:
> Michael Ulitskiy wrote:
> 
> >Hi,
> >
> >I have asterisk functioning as SIP to H.323 gateway for local SIP endpoints and I have H.323 to PSTN
> >gateway (Lucent MAX TNT) connecting my LAN VOIP to PSTN via PRI.
> >Everything works fine with one exception. I seem to be unable to figure out why I cannot hear 
> >PSTN intercepted announcement  ("number is not in service" etc.) when I'm calling 
> >a disconnected number through asterisk. 
> >
> AFAIK, A PRI is normally expected to signal number not in service 
> conditions out of band, so * should be signalling the out of service 
> condition in a manner appropriate for the channel type (as a recording, 
> or as the most accurate protocol specific out of service response code 
> available, casung the out of service condition to be indicated by the 
> target equipment)
> 
> With my SNOM phone, the PRI signals not in service or no route or 
> whatever, then * relays that in the form of a SIP error response, then 
> the SNOM phone executes an internal recording and shows the error on the 
> display as well.
> 
> This results in more reliable call handling all the way through, and 
> some bandwidth savings.
> 
> 
> _______________________________________________
> Asterisk-Users mailing list
> Asterisk-Users at lists.digium.com
> http://lists.digium.com/mailman/listinfo/asterisk-users
>