Hi All,
Working towards me CCIE Voice Lab exam.....
I have 3745 Router with:
1 x NM-HDV
3 x PVDM-12
1 x VWIC-1MFT-E1 Module.
1 x 7960 Phone
I have placed a Loopback cable in the single E1 socket, but I get "RX <- BAD FRAME" received when debug isdn q921 is turned on. So this will not help me simulate a PSTN for me to see Q931 traffic.
Would a single VWIC-2MFT-E1 card be enough to simulate a ISDN q931 and q921 message if I loop the ports together with a E1 crossover and set one as USER and the other NETWORK?
I am trying to go for least cost solution with what I already have?
Thanks,
Ed
