>> 3. Regarding Tag. Can multiple instances of a user (with same
>> SIP URL) be present on the same end-point (host), each
>> instance having different session capabilities? These
>> instances could be differentiated using tag. However,
>> registration would be only done once.
>No. How would you know, based on an incoming initial >INVITE, for which one
>the request was targeted? Use separate URLs on the same >host.
The incoming INVITE would be duplicated (I don't want to use 'forked')at the endpoint
to both users. As they have different capabilities, only one would respond with a 200.
Also, the user's software would add a tag to differntiate the responses.
The benifit of this is that a user can subscribe to differnt services at the same
endpoint with the same permanent sip id. Each service is independently handled by the
software assigned by the user.
Deepak
-Jonathan R.
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