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 -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.digium.com/pipermail/asterisk-users/attachments/20081217/425e39fe/attachment.htm
If you are connecting to BRI lines then you should be TE - not NT. You can run as TE ptp or ptmp with mISDN (not sure about DAHDI yet - not tried the new release). HTH ? -----Original Message----- From: asterisk-users-bounces at lists.digium.com [mailto:asterisk-users-bounces at lists.digium.com] 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
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: asterisk-users-bounces at lists.digium.com [mailto:asterisk-users-bounces at lists.digium.com] 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 <andy at datavox.co.uk> 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: asterisk-users-bounces at lists.digium.com [mailto:asterisk-users-bounces at lists.digium.com] 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
I would say the 'norm' in the UK is TE-ptp and NT-ptp or NT-ptmp (depends what is on the end of the port(s)). If using NT-ptmp, then a 100ohm resistor is usually needed in the circuit somewhere - aka ISDN balun - (unless the card has this facility - like the B410P has). HTH Andy -----Original Message----- From: asterisk-users-bounces at lists.digium.com [mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of Olivier Sent: 17 December 2008 10:36 To: Asterisk Users Mailing List - Non-Commercial Discussion Subject: Re: [asterisk-users] libpri and NT-Point to multi-point 2008/12/17 Andrew Thomas <andy at datavox.co.uk> 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). Fine, so, using? this setup as an example, would say the norm in the UK, is to connect to ISDN-BRI in ptp (reading from ports 1 and 2 configuration), or to connect using ptmp (reading from ports 3 and 4 configuration, dedicated to isdn modems) ? 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: asterisk-users-bounces at lists.digium.com [mailto:asterisk-users-bounces at lists.digium.com] 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 <andy at datavox.co.uk> 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: asterisk-users-bounces at lists.digium.com [mailto:asterisk-users-bounces at lists.digium.com] 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
Maybe Matching Threads
- Belgian BRI (euroisdn): what to use for a B410P
- [SPAM] - Re: [SPAM] - Re: [SPAM] - Dahdi, b410p and looping from 1 port to another - Email found in subject -Email found in subject - Email found in subject
- Which policy for ISDN BRI support in NT/PtMP ?
- DAHDI and B410P (BRI)
- Asterisk 10/1.6.1 and Dahdi/Libpri compatilities in BRI /PtmP