[Freeswitch-users] Force SIP UA to pick up call during ringing?

Tue Jun 16 10:49:16 PDT 2009

It mainly works now by uuid_transfer the following way via event socket.
      uuid_setvar <unique_id> sip_invite_params intercom=true
      uuid_setvar <unique_id> sip_auto_answer true
      uuid_transfer <unique_id> 1000 XML default
so the call is transferred from 1000 to 1000.

What happens:
1) If I disable intercom on the Snom phone, the phone rings, stops
ringing and rings again (ok)
1) If I enable intercom on the Snom phone, the phone rings, stops
ringing and hangs up (not ok)

So I do not get the Snom to pick up the call in intercom mode.

The last invite is:
    INVITE sip:1000 at 192.168.178.50:2752;transport=tls;line=er6kxnib SIP/2.0
    Via: SIP/2.0/TLS 217.xx.xx.xxx;branch=z9hG4bK3gjpa64pSKgmF
    Route: <sip:1000 at 217.24.11.189:2752>;transport=tls;line=er6kxnib
    Max-Forwards: 68
    From: "Peter FS" <sip:723323 at 217.xx.xx.xxx>;tag=9eQ8rjQy533HF
    To:
<sip:1000 at 192.168.178.50:2752;transport=tls;line=er6kxnib;intercom=true>
    Call-ID: bd05aeab-d53a-122c-72b5-001e904cc34e
    CSeq: 116467629 INVITE
    Contact: <sip:mod_sofia at 217.xx.xx.xxx:5061;transport=tls>
    Call-Info: <sip:217.xx.xx.xxx>;answer-after=0
The intercom part is there and the Call-Info line with answer-after also.

The phone answers with
    SIP/2.0 401 Unauthorized
    Via: SIP/2.0/TLS 217.xx.xx.xxx;branch=z9hG4bK3gjpa64pSKgmF
    From: "Peter FS" <sip:723323 at 217.xx.xx.xxx>;tag=9eQ8rjQy533HF
    To:
<sip:1000 at 192.168.178.50:2752;transport=tls;line=er6kxnib;intercom=true>;tag=71rskygkr2
    Call-ID: bd05aeab-d53a-122c-72b5-001e904cc34e
    CSeq: 116467629 INVITE
    Contact:
<sip:1000 at 192.168.178.50:2752;transport=tls;line=er6kxnib>;reg-id=1
    WWW-Authenticate: Digest realm="sip2.mycompany.de",
nonce="2ee26efe6ab27f88", algorithm=MD5
    Content-Length: 0
and hangs up.

Anybody know how to solve this Snom intercom issue?

Best regards
Peter

Michael Jerris schrieb:
> The transfer should work but it sounds like offhook agents is what  
> your really trying to accomplish so I would go with brian's suggestion.
>
>
>
> On Jun 16, 2009, at 7:38 AM, Peter P GMX <Prometheus001 at gmx.net> wrote:
>
>   
>> Hello Michael,
>>
>> I want the phone be ringing, just for acoustical feedback reasons.
>>
>> But what if I
>>
>>    * transfer it to the same user destination again (now with intercom
>>      enabled), will this work?
>>    * transfer it to park and then transfer it to the same destination
>>      again (now with intercom enabled)
>>
>> Best regards
>> Peter
>>
>> Michael Jerris schrieb:
>>     
>>> The only way I can think to do this today would be to cancel the call
>>> and re send with the intercom headers for a phone that supports it.
>>> It may be possible to send a reinvite with autoanswer headers but I
>>> doubt that would work, all you could do is try making code to do it  
>>> it
>>> a sipp or sipsak scenario and test it.  A better aproach might be to
>>> answer the call normally and detect that to start your web workflow  
>>> or
>>> not really ring the phone, just the web app and deliver the call with
>>> autoanswer when the button is hit in the web ui.
>>>
>>> Mike
>>>
>>> On Jun 16, 2009, at 4:24 AM, Peter P GMX <Prometheus001 at gmx.net>  
>>> wrote:
>>>
>>>
>>>       
>>>> Hello Brian,
>>>>
>>>> this is too easy :-).
>>>>
>>>> This is for a small callcenter app and I only want the user to  
>>>> pickup
>>>> the call once (to accept the call in X-Lite (or a Snom phone) and to
>>>> start the workflow on the web application). I do not want him to
>>>> accept
>>>> the call on the phone and then on the Web app.
>>>>
>>>> Best regards
>>>> Peter
>>>>
>>>>
>>>>
>>>> Brian West schrieb:
>>>>
>>>>         
>>>>> click on the AA button?  :)
>>>>>
>>>>> /b
>>>>>
>>>>> On Jun 15, 2009, at 7:19 PM, Peter P GMX wrote:
>>>>>
>>>>>
>>>>>
>>>>>           
>>>>>> What is the best way to have this done? Move the call to park and
>>>>>> then
>>>>>> retransfer again with intercom, or is there a better solution?
>>>>>>
>>>>>>
>>>>>>             
>>>>> _______________________________________________
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>>>>>
>>>>>
>>>>>           
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