> David J Carter schrieb: > > Hi all, > > > > I have just been reading an article on the asterisk-doc site about > > ISDN X-Over cables. > > > > The article mentioned the converting of an NT1 to make this > possible, > > has anybody got the information required to modify a BT NT1? > > > > Or any information on the BT NT1. > > As far as I know, you just need a second ISDN card and a X-cable. No > mods to the NT1 are needed. To build such a cable, just swap > the outer > pair with the inner pair. > > 3 ----- 4 > 4 ----- 3 > 5 ----- 6 > 6 ----- 5
In Addition, you need bus termination: - Use a device that terminates the bus * Your NT1 does that (often already enabled with dip-switches inside), just plug the x-over to the nt1 as well as your other device(s) * Use a multiplug that terminates the bus - or just put in two 100 ohm resistors, one between 4&5 one between 3&6. Extremely easy and cheap if you cut a cable in half, rewire them using a screw joint, where you can also put the resistors in. Depending on the device you want to connect, you might need bus powered, THEN you really need your NT1 (or a card that provides this feature). Link to PBX4Linux - documentation has already been posted. Greets Stefan -- Stefan M�rkle Netpioneer GmbH Leitender Systemarchitekt Beiertheimer Allee 18 <[EMAIL PROTECTED]> 76137 Karlsruhe _______________________________________________ Asterisk-Users mailing list [email protected] http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
