Dear all Recently we bought 4 AVM A1(v3.0) ISDN cards which we connected to PC and then we loaded the drivers to check whether the driver can detect the cards. In fact the card is detected and the messages in the /var/log/messages contains the messages that are given in the ISDN/README.Hisax file. They came with 6.0 meter cable, with one end going into PC and the other end contains RJ45 plug. Now the problem is ):- We want to connect 2 PC's through a Siemens 100E exchange which provides 16 S0 interfaces. But each S0 interface has RJ11 socket and AVM card's cable has RJ45 plug. How can this happen and how to connect. Is there is someone who is using Siemens Hicom100E exchange. Please reply back. It is very urgent. Thank you -shashi ----------------------------------------------------------------------- LIH is all for free speech. But it was created for a purpose - to help people discuss issues about installing and running Linux. If your messages are counterproductive to this purpose, your privileges to submit messages can and will be revoked.