[SIPForum-discussion] advantage of SIP T over SIP I

[Nilima Verma]

*Hi all
*

*SIP-I defines a mapping from SIP to BICC in additional to ISUP, while
SIP-T addresses only the ISUP*

*SIP-T is inherently designed for interoperation with native SIP terminals,
while SIP-I is restricted for use between PSTN gateways only*

*SIP-I is more accurate and explicitly defines the parameters between ISUP
and SIP and on top it defines the supplementary services for
telecommunication interconnection in detail, which is not support by SIP-T.*

Read more:
http://www.differencebetween.com/difference-between-sip-i-and-sip-t/#ixzz1kPI6Yzkq

Nilima


On Fri, Jan 20, 2012 at 12:42 AM, Raghul Prasanna <raghul82 at yahoo.co.uk>wrote:

> Hello all,
>
> Can someone explain what will be the advantage of using SIP T over SIP I
> please?
>
> I understand that SIP T supports just basic Call setup and tear down, but
> doesn't support any supplementary services.
>
> Then why would some of the telecom carriers look for SIP T support?
>
> Thanks,
> Raghu;
>
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