[asterisk-dev] Caller/connected line ID updates * I NEED YOUR INPUT!!!

Timo Teräs timo.teras at iki.fi
Tue Jul 8 11:35:54 CDT 2008

Johansson Olle E wrote:
> 8 jul 2008 kl. 15.21 skrev Timo Teräs:
>> You should check out that and the chan_zap patch from bug 8824.
> Thanks, I did not consider Q.SIG. I need to add that and a reference
> to your bug report to my document.
> So Q.SIG sends an update in relation to a transfer? Interesting.
> I found that EuroISDN only does it at call setup. That gives
> Q.SIG an advantage I wasn't aware on (being the SIP guy)
> when connecting to an oldfashioned office PBX.
> We need to get all these patches into one branch.

Yes, ECMA-178 specifies callTransferComplete (ctComplete for short)
message amongst others. That can be sent as a notification that call
has been transferred and the new connected line number and name can
be passed within that message.

Planning to implement it sometime soon(ish). There was some ASN.1
library discussion for libpri so I postponed this for a while. If
the existing Q.SIG patch gets merged as-is, I can implement this in
a similar manner. It shouldn't be too hard as I have an environment
where I get these messages from my PBX relatively often (IAX calls
passed to Q.SIG PBX get transferred within the PBX and my Asterisk
gets notification about the transfer).

Not sure if EuroISDN has anything similar.


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