Re: [Sip-implementors] From/To header manipulation

2006-12-13 Thread Sanjay Sinha \(sanjsinh\)
RFC 3261 mentions that From/To headers, without the tag, can be changed 

-Original Message-
From: [EMAIL PROTECTED] 
[mailto:[EMAIL PROTECTED] On Behalf Of 
[EMAIL PROTECTED]
Sent: Wednesday, December 13, 2006 8:57 AM
To: sip-implementors@cs.columbia.edu
Subject: [Sip-implementors] From/To header manipulation

Hi,

Can we change the From/To header value (caller id part and not 
from tag) after dialog is established.
My understanding is except tag anything can be changed in From header. 

We have requirement to show different caller id in case of 
transfers where A is first connected to B so A will have B's 
id in To header and when A is finally connected to C it should 
show C's id. How can we communicate using 
From and To headers only, many phones are not supporting P-Asserted
Identity header for this purpose.

Regards,
Udit
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Re: [Sip-implementors] From/To header manipulation

2006-12-13 Thread Brett Tate

 RFC 3261 mentions that From/To headers, without the tag, can 
 be changed 

The rfc3261 indicates To/From uri's currently cannot change because of
backward compatibility with rfc2543.  However it does indicate that this
backward compatibility requirement might be deprecated by a subsequent
RFC.

The following draft provides an example related to the deprecation.

http://tools.ietf.org/wg/sip/draft-ietf-sip-connected-identity/



 -Original Message-
 From: [EMAIL PROTECTED]
 [mailto:[EMAIL PROTECTED] On Behalf Of 
 [EMAIL PROTECTED]
 Sent: Wednesday, December 13, 2006 8:57 AM
 To: sip-implementors@cs.columbia.edu
 Subject: [Sip-implementors] From/To header manipulation
 
 Hi,
 
 Can we change the From/To header value (caller id part and not from 
 tag) after dialog is established.
 My understanding is except tag anything can be changed in 
 From header. 
 
 We have requirement to show different caller id in case of transfers 
 where A is first connected to B so A will have B's id in To 
 header and 
 when A is finally connected to C it should show C's id. How can we 
 communicate using
 From and To headers only, many phones are not supporting P-Asserted
 Identity header for this purpose.
 
 Regards,
 Udit

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Sip-implementors@cs.columbia.edu
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