Hey All

So here is the scenario,

If party A calls party B and party B has a mobile phone, desk phone and
PC, the call will get forked to all devices and the PC may answer. The
GRUU for B's PC is stored on device A. If B had a sequential ringing
scheme whereby the mobile phone rang first, then the desk phone, then
the PC, then this scheme would be lost at the next time that party A
called party B, as the party A may decide to insert the GRUU for the
next communication with party B, thus contacting the PC. This would
override any ringing/contacting preferences for party B. 

So that is the background for this question. The question I pose is:

*       If the network decides to 'override' the GRUU usage by enforcing
the ringing preferences for party B, then the network may Hold the
communication between party A (using party B GRUU) and notify party A of
unavailability to complete the communication path based on existing
callee capabilities i.e. using party B GRUU. Party A may then
re-initiate (using SIP UPDATE) communication with party B by not
including party B GRUU.
*       Is it possible to use UPDATE in such a manner to change the
Contact header within  the Invite dialog?


Regards

Sourabh Anpat
Product Planning and Standards
Nortel Networks
Maidenhead Office Park,
Westacott Way, Maidenhead, 
Berks SL6 3QH, UK 
email: [EMAIL PROTECTED]
Tel: +44 (0)1628 432719
ESN: 560-2719

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