[Serusers] Advice needed

[Greger V. Teigre]

I would say SER is what you need, except that you struggle with the 
authentication.  You have the following scenarios:
1. PSTN termination with IP-based access control (easiest)
2. PSTN termination with authentication of all INVITEs (yes, that's the UAC 
module. You should contact the maintainer,  Ramona-Elena Modroiu about the 
status. I thought it was reported to work, but haven't tried myself)
3. PSTN termination with registration and authentication of REGISTER (but 
not INVITEs).  Use sipsak to generate a REGISTER for your box.

#2 requires that all INVITEs are sent twice and is not a very good option. 
I would seek out PSTN providers who will give you #1.
g-)


Michael Ulitskiy wrote:
> Hello,
>
> I'd like ask for advice on what is in your opinion the best solution
> in the following scenario.
> I have a bunch of sip servers (asterisk boxes as my users need pbx
> functionality) that can make sip call to each other and my PSTN
> gateway. Now I want to purchase PSTN terminitaion in several
> different markets (and probably more in the future). All those
> terminations will require authentication.
> I want all my boxes when they see non-local call to send it to a
> central routing server that would determine where this call should
> be sent and authenticate to the appropriate provider so that I don't
> have to configure all credentials on all asterisk boxes. Also I want
> it not to deal with the media at all. All media streams should go
> directly from asterisk box to the PSTN termination provider.
> So basically it should be central SIP router that is able to
> authenticate calls if neccessary.
> I thought I could do it with SER and its UAC module, but it appears
> UAC module doesn't work and probably won't work (see my previous
> post in this list about UAC backport to 0.9.0).
> Also I don't want to use asterisk in this place as asterisk always
> wants to stay in media path and I'd really like to avoid of getting
> into hassle with re-invites.
> So the question is what are my options and what you would advice
> as a solution. Are there any software out there that can do it
> (preferably open-source, of course) or what else you could suggest to
> do to get desired results.
> Thanks a lot,