Hi All, I am working on VoIP solution, i am working out for E &M solution but i donot know how to calculate the memory required in router depending on the no of channels. also with E & M card how many simultaneous connections can happen. Can any one help me in giving url address where this info will be available. Thanks in Adv..... __________________________________________________ Do You Yahoo!? Yahoo! Shopping - Thousands of Stores. Millions of Products. http://shopping.yahoo.com/ _________________________________ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]