The PBX style has the capacitor to make the "bell" line but does not have the test resistor or surge (lightning) protector.
Some RJ11 style modem leads are just straight US phone leads (middle two pins connected and reversed between connectors) but some use different pins on the connector at one end. Perhaps you have one of them. What are you planning to connect to the TDM400P ultimately. Connect to patch panel? Directly to cable runs, or to phones in same room? _______________________________________________ Asterisk-Users mailing list [EMAIL PROTECTED] http://lists.digium.com/mailman/listinfo/asterisk-users