Try terminating using 50 ohm resistors as suggested by this guide: http://home.foni.net/~jolly1/download/PBX4Linux-2.5.html in chapter 2.2 (Connect ISDN telephones to your ISDN card.)
Best regards, Jan Snelders -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Zoltan Szecsei Sent: zaterdag 16 juli 2005 12:54 To: Asterisk Users Mailing List - Non-Commercial Discussion Subject: Re: [Asterisk-Users] Multiple ISDN BRI Units with Asterisk usingBristuff zaphfc in NT mode? Carl Andersson wrote: > Maybe this is rather a hardware question, but I am posting it on this > list because the probability of someone else of you having tried this > is greater here than other places I can think of. > > I have an ISDN card that is setup in NT mode using the zaphfc driver > in bristuff, and I got it working perfectly with one ISDN phone using > a crossover cable and 100 ohm termination at the end of the cable. > > However, if I connect one more ISDN device to the ISDN bus both > devices stop working, so the question is: > > Is it only possible to use one device with a HFC card in NT mode or is > there something else I need to do first to make it work with two devices? > Hi Carl, I just started yesterday afternoon with exactly the same setup so you are a bit ahead of me. If anyone answers you directly then please be kind enough to forward their comments to me. I have not even tried to sort out trunks, bristuff or anything yet but it might be worth pointing out that my initial problems were that, using an old pIII motherboard with pci graphics, network plus 2 HFC bri isdn cards, I ran out of IRQs. I had to lock down & exclude the irq for the network card before the 2 ISDN cards woke up. I now have the network & 1 ISDN card on their own IRQ and the graphics and 2nd ISDN card sharing an IRQ. Maybe this could be a similar problem for you? I'm using this HW with AAH 1.1 Keep in touch, Cheers, Zoltan -- ================================== Geograph (Pty) Ltd P.O. Box 31255 Tokai 7966 Tel: +27-21-7018492 Fax: +27-86-6115323 Mobile: +27-83-6004028 ================================== _______________________________________________ Asterisk-Users mailing list Asterisk-Users@lists.digium.com http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users _______________________________________________ Asterisk-Users mailing list Asterisk-Users@lists.digium.com http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users