[asterisk-dev] Asterisk as voice gw to the IMS world

[George Thanos]

3GPP standards for IMS are openly accecible on the web. There is no 
document that specifies the differences or add-ons from the regular SIP 
RFC. Rather, a set of documents specifies the sequence of messages for 
IMS-SIP.

We are trying to comply with

http://www.3gpp.org/ftp/Specs/archive/24_series/24.228/24228-560.zip

- George



Klaus Darilion wrote:
> Raphael Jacquot wrote:
> 
>> George Thanos wrote:
>>
>>> SIP signalling from IMS is a little bit different from the Asterisk 
>>> SIP stack. 3GPP has defined some extentions to the protocol.
>>
>>
>> yet another case of "lets break the RFCs for profit" ?
> 
> 
> AFAIK all 3GPP extensions are RFCs (or on the way to an RFC)
> 
>> do you have specs available for the changes ?
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