[Freeswitch-users] Confusing about FreeSWITCH callID variables

[Steven Ayre]

sip_call_id is the Call-ID header of the SIP packet. It will usually be
different for the A-leg and B-leg of the call. However once in a call it
identifies the call and *must* stay the same. If you are seeing it change
then you're either looking at different legs of the call.

On 9 November 2014 10:33, Israel Fink <ifink at machshevet.com> wrote:

>  Thanks for your clear answer.
> But I find thinks a bit different. we do collect the FS events during ESL
> mod event_socket, and find that the Unique-ID changes by channel.
> What I try to do is, we have a FS server, each call comes in via the
> server, there were made some logic like answer, greeting etc. and also
> saving the call in DB. from there it goes to a client extension to get the
> call, speak, hang up etc. when it comes to the client I need to know which
> call it is in the server and in the DB.
> The only variable the client gets from the server is sip_call_id, and now
> after your explanation I understand why, since this is outbound.
> My problem is that this variable also changes when bridging, it begins
> with one value then when bridging it changes to another value. the client
> gets the second value after bridging, and I cannot find this new value in
> early events like 'CHANNEL_CREATE' or 'CHANNEL_ORIGINATE', it  only appears
> in later events like 'CHANNEL_PROGRESS' when the client already ringing,
> and this is a bit late.
> In short, I need a unique variable to can recognize the incoming call to
> the client with the incoming call to the server.
>
> Israel Fink - Developer
> Machshevet team
>
> *From:* Brian West <brian at freeswitch.org>
> *Sent:* ‎Friday‎, ‎November‎ ‎7‎, ‎2014 ‎12‎:‎23‎ ‎AM
> *To:* freeswitch-users at lists.freeswitch.org
>
> 1. Unique-ID is the session UUID, this won't change at all during the
> session (aka call).
>
> 2. Channel-Call-UUID is either the same as Unique-ID or the Unique-ID of
> the session you're bridged to by looking at the source code.
>
> 3. sip_call_id will be the sip call_id of an inbound/outbound SIP call,
> More than likely the outbound would match Unique-ID and on inbound it would
> be what ever the remote party sets/sends.
>
> The bigger question is what exactly are you trying to solve/understand?
>
> On Thu, Nov 6, 2014 at 7:52 AM, Israel Fink <ifink at machshevet.com> wrote:
>
>>  I'm a bit confusing about the channel variables that represent the call
>> ID.
>>
>> I find that there are three variables, 1) Unique-ID 2) Channel-Call-UUID
>> 3) variable_sip_call_id, what is the different between this.
>>
>> The value of Channel-Call-UUID seems to be stable during the entire call,
>> the value of Unique-ID in the begin it is the same as Channel-Call-UUID but
>> when bridging it changes it value to another ID, then it comes back to the
>> beginning value, i.m not clear when and why.
>>
>> The variable variable_sip_call_id many time don't have any value, and
>> also it changes the value when bridging and then comes back to the previous
>> value.
>>
>> I have looked for an explanation in FreeSWITCH wiki, but don't find.
>>
>> In the mailing list a have found an explanation here:
>> http://lists.freeswitch.org/pipermail/freeswitch-users/2013-August/099035.html,
>> but still not enough.
>> Can someone give a good explanation about this variables,what is their
>> purpose, and so on.
>>
>>
>> Israel Fink - Developer
>> Machshevet team
>>
>>
>> _________________________________________________________________________
>> Professional FreeSWITCH Consulting Services:
>> consulting at freeswitch.org
>> http://www.freeswitchsolutions.com
>>
>> Official FreeSWITCH Sites
>> http://www.freeswitch.org
>> http://confluence.freeswitch.org
>> http://www.cluecon.com
>>
>> FreeSWITCH-users mailing list
>> FreeSWITCH-users at lists.freeswitch.org
>> http://lists.freeswitch.org/mailman/listinfo/freeswitch-users
>> UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users
>> http://www.freeswitch.org
>>
>
>
>
> --
>
> *Brian West*
> brian at freeswitch.org
>
>
> *Twitter: @FreeSWITCH , @briankwest*
> http://www.freeswitchbook.com
> http://www.freeswitchcookbook.com
>
> *T:*+19184209001 | *F:*+19184209002 | *M:*+1918424WEST (9378)
> *iNUM:*+883 5100 1420 9001 | *ISN:*410*543 | *Skype:*briankwest
>
> _________________________________________________________________________
> Professional FreeSWITCH Consulting Services:
> consulting at freeswitch.org
> http://www.freeswitchsolutions.com
>
> Official FreeSWITCH Sites
> http://www.freeswitch.org
> http://confluence.freeswitch.org
> http://www.cluecon.com
>
> FreeSWITCH-users mailing list
> FreeSWITCH-users at lists.freeswitch.org
> http://lists.freeswitch.org/mailman/listinfo/freeswitch-users
> UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users
> http://www.freeswitch.org
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.freeswitch.org/pipermail/freeswitch-users/attachments/20141109/47c431b4/attachment.html