I am looking to do frame relay in a lab. I am looking at getting 4 WIC-1T cards and then 1 other card wither a NM4-T or a NM4-A/S card. This card is going in a 3620 or 3640 for a frame relay switch. Which card should i go with? I have found the NM4-A/S cheaper would that card work?
I have this problem too.