[asterisk-dev] Collecting and reporting bridged dialling information

[Pavel Troller]

Hi!
  I've seen an overview of CEL (not reading sources, just articles about
it) and it seems that it's not exactly what I need.
  - I'm still not sure, whether it logs the bridged digits, it seems for
me that it highly increases the functionality of logging transfers etc.,
exactly as you're writing, but I'm not sure, whether also my problem
is addressed by it
  - It seems that it's for CDR only, I also need the possibility to get
this information in the dialplan, for example for the LNR (Last Number
Redial) feature etc. It can be said that I need primarily to export
this information to the dialplan (for example, returned in a variable
from a Dial() command), because I can then manually insert it to the
CDR (combined with the extension number and possible number conversions,
so the number which gets logged is fully under my control).
  - Now I'm working on a 1.6.1 branch, it seems that CEL will not be
backported there.

  With regards, Pavel

> Hi,
> 
> Have you looked into the CEL (Call Event Logging) stuff which is (I think) in trunk.
> It gives a more accurate record of what happened during a call so you can better handle transfers and such like in your billing logic. It may already do what you want.
> 
> Regards,
> Nic.
> 
> -----Original Message-----
> From: asterisk-dev-bounces at lists.digium.com [mailto:asterisk-dev-bounces at lists.digium.com] On Behalf Of Pavel Troller
> Sent: 10 November 2009 10:15
> To: asterisk-dev at lists.digium.com
> Subject: [asterisk-dev] Collecting and reporting bridged dialling information
> 
> Hi!
>   In my typical asterisk usage model, there is a lot of cases, where an
> overlap dialling takes place. Such a typical scenario involves bridging
> a call to a channel (for example, DAHDI/PRI or similar) as soon as its
> access code is dialled (in overlap mode) by the calling subscriber. In
> this case, further dialling events are bridged by the asterisk core from
> the calling channel to the called one, obviously in AST_FRAME_DTMF frames.
>   The calls can be perfectly set up this way, however, the dialling info
> transmitted over the bridge is not stored at any place, especially in the
> CDR. There is also, AFAIK, not possible to retrieve this information in
> the dialplan (for example, by setting a variable by the Dial() command
> with the "g" (proceed in the dialplan) flag), which could be retrieved and
> stored in the custom CDR record. Please note, that this functionality is
> a "must" for any "classic" PBX.
>   I would like to attempt to write a patch, implementing this functionality.
> Because I'm still not an "established" Asterisk developer yet, I'm kindly
> asking the more experienced ones to give me some hints, where to start. I've
> studied the sources and I've got an approximate knowledge about the path of
> the frames over the core, but I'm still not decided, in which exact place
> it would be best to insert the new code.
>   With regards,
>     Pavel Troller
> 
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