Hi all,
(disclaimer : cross lists posting is not a good practice - we will do
this only to catch the attention and get momentum with this initial topic)
As a first step here, is to work out the scope of the IMS implementation
in OpenSIPS. IMS is a vast concept, with SIP and non-SIP components, and
we want to understand and agree on which components of IMS may be
subject of work from the OpenSIPS perspective. For example, we do
consider the CSCF as a must here, but we may explore the HSS, AS, MGW or
other components.
From the OpenSIPS perspective, we look for IMS components which are SIP
related. At least as a starting point. So, the first obvious candidate
is the *Call Session Control Function (CSCF)*. And here we need to look
into and address the specific functionalities of each sub-component:
* P-CSCF
* I-CSCF
* S-CSCF
Again, these are the pretty obvious components, still may look into and
evaluate (if of an interest of the OpenSIPS IMS implementation) areas as:
* HSS (from interconnection perspective)
* MGCF / MGW (from interconnection perspective)
* SIP AS
* others ?
Any feedback (with explanations and arguments) about what we should
consider for our IMS implementation is more the welcome. I set here just
a simple starting point, with no limitations or so. Feel free to
contribute to the topic
Best regards,
--
Bogdan-Andrei Iancu
OpenSIPS Founder and Developer
https://www.opensips-solutions.com
https://www.siphub.com
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