Rajanikanth wrote:
> But in RFC5627(GRUU) it's mentioned that Call-ID can change in register 
> refresh requests,if UA wants to invalidate temp-gruu.
> Can we change call-ID in the register refresh requests?

Sure you can change the callid from one REGISTER request to another. In 
that case it is, as far as the registrar is concerned, not a refresh but 
rather an entirely new registration.

        Thanks,
        Paul

> --
> Thanks,
> Rajanikanth
> 
> Uttam Sarkar wrote:
>> RFC 3261 says:
>>
>> In section 10.3
>>
>>
>>       Call-ID: All registrations from a UAC SHOULD use the same Call-ID
>>            header field value for registrations sent to a particular
>>            registrar.
>>
>>            If the same client were to use different Call-ID values, a
>>            registrar could not detect whether a delayed REGISTER request
>>            might have arrived out of order.
>>
>>
>>
>> -----Original Message-----
>> From: sip-implementors-boun...@lists.cs.columbia.edu
>> [mailto:sip-implementors-boun...@lists.cs.columbia.edu] On Behalf Of
>> Rajanikanth
>> Sent: Tuesday, December 22, 2009 11:28 PM
>> To: sip-implementors@lists.cs.columbia.edu
>> Subject: [Sip-implementors] Need info on Call-ID
>>
>> Hi All,
>>
>> When can a Call-ID changes in SIP Registration with regard to GRUU.
>>
>> --
>> Thanks,
>> Rajanikanth
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>>
>>
>>   
> 
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