Dear Groupstudy Comrades- I have a question regarding ISDN simulators. I have to opportunity to telnet to 2 routers connected to an ISDN simulator for practice. I have limited documentation. I only know the SPIDs. The LDN (local dial numbers) are referenced as N/A. Do I need an LDN to make my configuration work with the ISDN simulator? Without the LD, when I ping the distant router, the local router attempts to dial but the call never occurs. Any suggestions would be greatly appreciated. Thanks. David Rudolph, CCNP/MCSE Network Systems Engineer Lucent Worldwide Services Houston, Texas Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=8860&t=8860 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]