Leigh Anne, The simline2 ISDN simulator has S/T interface types. The router the individual was using to connect to his simulator had U interfaces.
This particular simulator will work without any additional hardware when connected to a Cisco device with S/T interfaces (such as the 2503, 2504, etc). However, if you are going to connect a Cisco device with a built in NT1 (a U reference point), you will also need a U reference point on the simulator side. In order to have a U reference point on the simulator side, you connect an external NT1. It's not the "usual" way you'd connect an NT1, but it allows both devices to have the same termination reference points and thus allows them to function together nicely. In summary, as long as the end reference points are the same, either S/T or U, when it comes to using the simulator in your lab, you should be good to go. For some technical info on NT1s, check out: http://www.isdntek.com/NT1.htm thanks, -Brad Ellis CCIE#5796 (R&S / Security) Network Learning Inc [EMAIL PROTECTED] used Cisco gear: www.optsys.net CCIE Labs, racks, and classes: http://www.ccbootcamp.com/quicklinks.html Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=30915&t=30915 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
