[chan-capi-users] Hangup(17) - CCBS/CCNR message

[Armin Schindler]

On Thu, 11 Sep 2008, Stefan Tichy wrote:
> Asterisk 1.4.21.2, chan_capi 1.1.1 connected to a german telekom
> Mehrgeräteanschluss (PtMP). If Hangup(17) is used in the dial plan,
> the following notice shows up:
>
>   chan_capi_supplementary.c:143 new_ccbsnr_id:
>   No peerlink found to set CCBS/CCNR linkage ID
>
> Asterisk/chan_capi cannot handle CCBS. That is correct.
>
> The problem is, that the caller might get a anouncement from his
> telecom provider. If it is german telekom landline:
>
> "Die gewählte Rufnummer ist besetzt. Möchten Sie den Service von T-Com
> nutzen und verbunden werden sobald diese frei ist so sagen sie jetzt
> bitte ja."
>
> and a few seconds later: "Dienst oder Dienstmerkmal nicht möglich."
>
>
> If it is T-Mobile (at least for my contract):
>
> "The called party is engaged. .... free of charge"
>
>
> I cannot test it, but some mobile providers seem to play strange
> announcements and try to redirect customers to expensive services.
>
> Is it possible to send the information that CCBS is not available?

I don't think so. The called party just can send back the cause.
And then the possibilities come from your provider. Maybe if you use another
hangup cause, the provider will not give the CCBS possibility anymore.

Armin