hi , I have connected a modem(us robotics ) to serial interface and made it as physical-layer async . I am tring to connected to connect to another 1601 with same configuration , i am able to dial to router in either ends but, not able to ping to serial interface , in choosen encapsulatio as slip and configured the both the side with modem inout command . It work some time with modem dtr-active and modem answer-timeout 30 but, i don't know how it work...... can anyone give me solution for this asap....... idris ___________________________________ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]