I am setting up Voip Lab, I have got 3640 and 1751 router, but I need to buy NM-2V and FXO and FXS cards to make them work in voice lab. could someone please help by answering the following queries regarding NM2V module on 3640 router. I would appreciate if any suggessions to built voice labs for CCVP specially in reagrds to hardware recommendation.
1. Do I need to buy DSPs seperately for 3600 series router or they are already installed on all NM-2V module?
2. Which IOS is suitable to use for 1751 and 3640 routers in lab environment?
3. How much memory Flash and DRAM is required in each router?
Also appreciate if you could ref any documentation or suggesions to get a good start.