[asterisk-users] OT: Which SIP method to use for this specificbehaviour ?

[Steve Langstaff]

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     Reason: SIP ;cause=200 ;text="Call completed elsewhere"


________________________________

	From: asterisk-users-bounces at lists.digium.com
[mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of Olivier
	Sent: 05 November 2007 15:22
	To: Asterisk Users Mailing List - Non-Commercial Discussion
	Subject: [asterisk-users] OT: Which SIP method to use for this
specificbehaviour ?
	
	
	Hello,
	
	Let SIP extensions 1001 and 1002 belong to an Asterisk calling
group : whenever an coming call reaches this calling group, both
extensions 1001 and 1002 receive a SIP INVITE message which makes these
2 phones starting to ring. 
	
	When a callee picks up his phone, the other extension receives a
CANCEL or BYE message which stops ringing.
	
	Is there any option you can include in CANCEL or BYE messages so
that the SIP hardphones would understand it shouldn't have to log this
call as it has been replied by someone else ? 
	
	In other words, is there any Alert-info option which can be used
to pilot phones call history logs  ?
	I didn't dare to search myself in IETF archives, given the
number of standards, SIP is now including.
	
	Regards
	

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