[Serusers] call transfer INVITE / REFER

[Iqbal]

just to get clarification

blind=?
attended= user calls u, u transfer the call
unatteneded= is this just like forward on no answer

Samuel Osorio Calvo wrote:

>The effective transferring is done using REFER messages but since there
>are several transfer methods, some INVITEs can be triggered before (put
>on-hold, contact the referee). So, depending on how the user has
>configured the transfer in his/her phone (blind, attended,
>unattended,are there more??) the SIP request that the phone sends when
>the user presses the button is different.
>Take a look at the draft specifying the different transfer methods for
>a detailled view of the message flows
>(draft-ietf-sipping-service-examples I don't remember the most recent
>number....probably 7 or 8)
>
>Samuel.
>
>
>Unclassified.
>  
>
>>>>Iqbal <iqbal at gigo.co.uk> 07/05/05 03:57AM >>>
>>>>        
>>>>
>
>which is why I am wondering if on pressing a transfer button request on
>a
>phone, should the first message being sent be a REFER or a INVITE,
>cause
>refer would make sense, although I havent looked at the rfc,
>
>If anyone has a IP phones transferring a ngrep of transfer would be
>appreciated
>
>Iqbal
>
>On 7/4/2005, "Nils Ohlmeier" <lists at ohlmeier.org> wrote:
>
>  
>
>>Hi,
>>
>>take a look at the SDP of the INVITE. Probably it just puts the other
>>    
>>
>side
>  
>
>>on-hold before sending the REFER.
>>But I have no real clue how transfering without REFER should work.
>>    
>>
>(Except a
>  
>
>>cumbersome solution with Replaces and 3pcc, which I have never.)
>>
>> Nils
>>
>>On Monday 04 July 2005 21:07, Iqbal wrote:
>>    
>>
>>>Hi
>>>
>>>Should the call transfer use INVITE or REFER as a method, cause I
>>>      
>>>
>seem,
>  
>
>>>to be getting INVITE, but this then causes problems with
>>>      
>>>
>authentication.
>  
>
>>>A <-->B  then B transfer to C (all IP phones)
>>>
>>>This transfer seems fine, but it uses INVITE, no REFER . All phones
>>>      
>>>
>on
>  
>
>>>same sip domain/server
>>>
>>>Now when this setup changes
>>>
>>>pstn <---->B and then B tried to transfer to C, we get nothing, well
>>>      
>>>
>we
>  
>
>>>get 404 , it check the !location setting, and says ur not allowed.
>>>
>>>Is the REFER the first message to be sent, or is there a INVITE
>>>transaction first,
>>>
>>>Iqbal
>>>
>>>
>>>_______________________________________________
>>>Serusers mailing list
>>>serusers at lists.iptel.org 
>>>http://lists.iptel.org/mailman/listinfo/serusers 
>>>      
>>>
>>    
>>
>
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>.
>
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>