On Sun, 24 Apr 2011 19:08:29 -0700, Todd Hodgen wrote: > I think Mike is misunderstanding and mixing up protocols here.
I've always admitted I just get by on this stuff, I'm no voice/telco engineer, it's just one of the many things I need to have a basic understanding of. Indeed, I sometimes don't know the proper terminology. > He states > his calls are coming in over a PRI. They are digital trunks, utilizing > qsig or some other standard ISDN protocol, ran over PCM and terminates to > your Mediant. Everything is coming in over a full data T1. The T1 runs into an Adtran 908C Total Access unit. That unit outputs a PCM connection to the mediant. I never see SIP from their network. I only see SIP from my mediant to my network. It's silly but they are sending Voice/Fax using SIP, then convert to PCM into the mediant which I then convert back into SIP for use on the LAN. They don't provide end to end SIP in which case I would not have needed the mediant, which is what I thought when that connection was going in, til the last minute and by then it was too late. Let's see if I can draw something up. Internet Connection | Provider---Metaswitch for Voice/Fax services using SIP | T1 Circuit | Customer | Adtran Router---PRI-Mediant | Lan Switch >They need to be > converted to t.38 for sipxecs, which I assume your gateway is capable of > doing (Licensing?). I don't know if this device has that licensing, if it's needed. Does have plenty of T.38 options though. > Set Mediant to support T.38, and sipXecs will recognize the call if set to > the correct alias for the extension you want it sent to. It will convert > T.30 to T.38. I could give it a try and see what happens. > Here is a good article to read - http://en.wikipedia.org/wiki/T.38_ITU- > T_recommendation Came across that a while ago while looking around for more info, thanks. > Mike, I would encourage you to read this article so you can speak with your > service provider at a higher level and understand what is being setup on > their end. I've always spent time reading up on the things I'm working on. I wish I could have better knowledge of all of this but it's not something I do daily so the overly technical aspect of things end up being more confusing. I've learned a heck of a lot more about phone systems than I ever thought I would though and it's from taking on such projects and the good people behind them. _______________________________________________ sipx-users mailing list [email protected] List Archive: http://list.sipfoundry.org/archive/sipx-users/
