You may also consider TransNexus's NexOSS/NexSRS product (www.transnexus.com) if you are looking for commercial approach. They are the folks majorly behind the OSP protocol and contributed Kamailio's 'osp' module.
Daniel-Constantin Mierla wrote:
welcome -- cc-ing mailing list is recommended all the time -- help people to get the conclusion of discussions.
On 20.10.2009 20:04 Uhr, A G wrote:
Great. Thanks for the feedback!
On Mon, Oct 19, 2009 at 3:47 PM, Daniel-Constantin Mierla miconda@gmail.com wrote:
Hello,
On 19.10.2009 20:18 Uhr, A G wrote:
Greetings:
I'm looking for advice on a project/proof of concept I'm working on. I would like to create a settlement-free peering fabric for voice traffic between and among some peer institutions in my area. Because this is more of a side-project for cost cutting measure, I'm primarily looking at open source software, though commercial product recommendations would be helpful as well.
The organizations I would like to connect have their own PBXs with large blocks of numbers (whole NPA-NXXs), with no number portability in or out. I imagine both at the individual PBXs and peering fabric, the number routing would be static. To put another way, we would manually configure which connections the block of telephone numbers is reachable at.
Here is the required ASCII art diagram :)
+-------+ | PBX | +-------+ | +-------+ | SBC | +-------+ | |+---+ +---+ .--------. +---+ +---+ | P | | S | / \ | S | | P | | B |--| B |------ ( ???? )----------| B |--| B | | X | | C | \ / | C | | X | +---+ +---+ `---------' +---+ +---+ | | +-------+ | SBC | +-------+ | +-------+ | PBX | +-------+
For scalability reasons, a full mesh of connections between and among the SBCs is not an attractive option.
Here's what I think I need: Basic SIP routing TCP, TLS, and UDP support
What would be nice to have: IPv6 CDR
What is probably not needed: User agent client registration, presence, IM, voice mail
I see there are several different open source voice projects. Do you think this is an appropriate use for Kamailio?
Kamailio can be used in such scenario. It has a lot of features to help you routing calls -- see modules such as lcr, carrierroute, dialplan.
If you do heavy tls/tcp, then upcoming Kamailio 3.0 will have lot of improvements in this areas. IPv6 is supported as well for core routing. You can generate CDRs using acc module and some stored procedures -- see for example: http://siremis.asipto.com/install-accounting/
Cheers, Daniel
I'm seeking comments on what you would use for this situation. Are there any existing projects along these lines? Is there one project that is better than another for this application?
-- Daniel-Constantin Mierla
- Kamailio SIP Masterclass, Nov 9-13, 2009, Berlin
- http://www.asipto.com/index.php/sip-router-masterclass/