[SIPForum-discussion] query.

[Nittin Dutt]

1.	A can blind transfer B in between a hold. A sends a REFER to B,
its up to the B to present the user the choice to continue with transfer
or just carry on with transfer anyway (can show on phone screen that
call has been transferred). Existing hold doesn't make any difference at
this stage; new transferred session would negotiate media from scratch
now.

 

2.	B can also transfer A. Soon after getting 202 response for
REFER, B would BYE to A and an existing hold is irrelevant now. Again A
would start afresh media negotiation with the party it's just been
transferred to.

 

-Nittin Dutt

(nutsnduts)

 

________________________________

From: discussion-bounces at sipforum.org
[mailto:discussion-bounces at sipforum.org] On Behalf Of Ravi Siebel
Sent: 04 July 2008 08:16
To: discussion at sipforum.org
Subject: [SIPForum-discussion] query.

 

Hi All, 

 

Suppose their is a P2P SIP call established between user agent A & B.
Now A puts B on hold. 

 

Here I do have ceratin queries to get clarify with you. 

 

Query 1. Consider at this present situation , Can A party do the blind
Call Transfer to some valid transfer target.

If yes, how does if affected on hold done by A towards B. '

If No then what is the reason ? 

 

Query 2. Consider at this present situation, Can B party do the blind
Call Transfer to some valid transfer target.

If yes, how does if affected on hold done by A towards B. what happened
to rtp on side A.

If No, then what is the reason ? 

 

Regards,

Ravi





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