[SIPForum-discussion] sip and sip-I

[WIGNELL, CLIFFORD (CLIFFORD)]

Hello

SIP-I is covered by ITU-T recommendation Q.1912.5 package C.

SIP-I contains the ISUP parameters in the body (as a mime block) of the SIP messages and contains techniques for passing mid-call messaging

SIP-T/I specifies interworking between ISUP/BICC and SIP
The interworking specifications include:

 *   Architectural context
 *   Mappings for specific parameters
 *   Mechanism for encapsulating ISUP messages.

SIP-T is specified in three IETF RFCs: RFC 3372, RFC 3398, RFC 3578

SIP-I is the ITU specification for SIP interworking with International ISUP (Q.761-Q.764) and BICC (Q.1902.1-Q.1902.4) in Q.1912.5
It specifies actions for three profiles, A, B, and C

North American variations in ANSI T1.PP.679-2004

SIP-I (Q.1912.5) and SIP-T are generally consistent except for subtle differences in terms of options, level of detail, and explicit vs. implicit requirements

SIP-I assumes a suitable "trust domain" exists between gateways
SIP-T assumes it is always necessary to use cryptography verify identity, establish trust, and to secure communication.

Q.1912.5 has been developed in the ITU-T and therefore has benefited from extensive input from numerous carriers.
SIP-I is more robust relative to mapping ISUP messages and parameters.

SIP-T has been developed in IETF, and therefore has benefited from a careful analysis of security considerations
Provides more detail in the context of public IP networks where "trust domains" may not exist


Best regards


___________________________
Cliff Wignell
Wireline Product Competency Centre APAC
Cell:    +61 419 747 373
DID:    +61 3 9664 3847
EMail:   cwignell at alcatel-lucent.com<mailto:cwignell at alcatel-lucent.com>
________________________________________

________________________________
From: discussion-bounces at sipforum.org [mailto:discussion-bounces at sipforum.org] On Behalf Of Prashanth Patha
Sent: Saturday, 12 September 2009 6:33 AM
To: discussion at sipforum.org
Subject: Re: [SIPForum-discussion] sip and sip-I

Hi,

Is there any RFC for SIP-I ? If there is one, can you tell me where it is? Also any documentation differntiating SIP and SIP-I would be great.

Regards
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://sipforum.org/pipermail/discussion/attachments/20090914/2322382f/attachment-0002.html>