I have converted Sifira's chan_ss7-0.8.4 release to run under OpenPBX. I have it running in a test lab between two machines. No problems that I can determine at this time. Understand it is an ITU model, not a ANSI model.
Tom Chandler ----- Original Message ----- From: "Daniel Swarbrick" <[EMAIL PROTECTED]> To: "OpenPBX.org Developers Mailing List" <[email protected]> Sent: Sunday, August 06, 2006 5:52 AM Subject: Re: [Openpbx-dev] More on Cluecon > Steve Underwood wrote: >> I think you miss the point. The ISDN call model, embodied in Q.931, is a >> superset of all the other call models. Any form of telephony today will >> fit into the ISDN (which is also the SS7) call model. No other call >> model can say that. H.323 is Q.931 based. SIP is just a hacked up >> abortion, but it is nowadays trying hard to be like ISDN. MGCP is a >> misconception designed to support a twisted gateway/switch model within >> a ISDN based world. > > Yes, I was going to mention SS7... does opbx support that yet? I vaguely > remember seeing some rumblings about it a while back. > > Anyway, running SIP ~or~ H.323 over an IP network is sometimes the only > option (unless you want to use FXO cards and POTS), since some exchanges > don't have ISDN, either at all, or have simply run out of linecards.... > which is the reason why my local telco sometimes use Alcatel 5020 > softswitches and run voip trunks out to CPE (albeit converted to E1 at > CPE, and you can't touch the voip trunk). > > Don't get me wrong, I'm still going to be forced to use PSTN of some > kind (mainly BRI) for many customers. It's mature technology, much more > mature than anything in the voip world. But (going back a few emails in > the thread), the point I was trying to make is that once you have an > external box handling your PSTN, with H.323/SIP trunk to your PBX, it's > very easy to migrate away from PSTN in future, and run your H.323/SIP > trunk over some kind of WAN. It also potentially liberates you from > having to run a PC... ie, you can use embedded devices that you couldn't > plug a PCI card into. > > Why do businesses pay for a high speed internet feed, which can easily > have QoS implemented on it in the case of "corporate" WAN options (as > opposed to consumer ADSL), then pay for multiple BRI or channelised E1/T1? > _______________________________________________ > Openpbx-dev mailing list > [email protected] > http://lists.openpbx.org/mailman/listinfo/openpbx-dev _______________________________________________ Openpbx-dev mailing list [email protected] http://lists.openpbx.org/mailman/listinfo/openpbx-dev
