I have piggy backed a few PBX's off the back of a B410P (4 x BRI) card with no problems. The ones I used for testing were the Avaya IP Office, Siemens Hi-Path/Hi-Com and various old Panasonics.
All I had to do was to turn on the 100ohm termination on my S0 ports (set as NT on the B410P of course). I actually have a similar set-up at the moment on our main asterisk system. 2 x BRI trunks (ports 1 & 2 set as TE ptp - for the DDI's etc) and 2 x BRI S0 bus (ports 3 & 4 set as NT ptmp) running and ISDN modem on each (good old Fritz! ones). So it is possible to run ptmp on NT ports using mISDN - just remember to turn on 100ohm termination on the ISDN card if you only have one device per port. HTH Andy -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Olivier Sent: 17 December 2008 09:08 To: Asterisk Users Mailing List - Non-Commercial Discussion Subject: Re: [asterisk-users] libpri and NT-Point to multi-point Hello Andrew, 2008/12/17 Andrew Thomas <[email protected]> If you are connecting to BRI lines then you should be TE - not NT. Yes of course, you're right. I was mostly referring to this : ISDN ------<BRI> ---- asterisk -----<BRI>----- legacy PBX Then, in this case, as legacy PBX has a set of TE-PtmP or TE-PtP interfaces, asterisk box should also include such NT-PtP or NT-PtmP interfaces. For instance, would you say that in the UK, most PBXes are using TE-PtP ? You can run as TE ptp or ptmp with mISDN (not sure about DAHDI yet - not tried the new release). HTH -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Olivier Sent: 17 December 2008 08:14 To: Asterisk Users Mailing List - Non-Commercial Discussion Subject: [asterisk-users] libpri and NT-Point to multi-point Hi, At the moment, libpri /w Asterisk 1.6, Dahdi 2.1, is not supporting NT-Point to multi-point mode. Here (France), most small PBXes are connected to ISDN through BRI trunks in PtmP (don't know why but it seems the general case). So this NT-PtmP function would be very helpful to easily slide an Asterisk box between an existing PBX and the network. Does the same case apply elsewhere (UK, Germany, Italy, ...) ? Do you think this is needed ? Regards _______________________________________________ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users _______________________________________________ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
