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RAD uci-hs interface converter with cisco routers

hello, I want to use the RAD uci-hs interface converter to connect two cisco routers using their serial v.35 interfaces but with an E1 between them. I have two routers in the lab, a mc3810 and a 2651.

If I connect the two routers serial back to back, it works as it should.

This is the simple configuration for both routers:


interface Serial0

ip address

no ip route-cache !sets by default

no ip mroute-cache !sets by default

no fair-queue !sets by default


interface Serial0/2

ip address

clockrate 1300000 !I removed this for the RAD application

no ip mroute-cache !sets by default

no fair-queue !sets by default

now, I have two RADs, each one has two modules, a g.703 (e1) module and a v.35 module. I make the connections as stated by the RAD manual, to make an interface conversion application. I connect the routers to the v.35 modules and the RADs are connected back to back with E1 cables to their g.703 modules. I set the jumpers of the RADs exactly as described. Power on the modules, and doesn't work. The physical interfaces are up in both routers. The line protocol is intermitent in the mc3810 and is off in the 2651.

I tried removing keepalives, also tried different encapsulations modes and subinterfaces in the routers; all the back to back connections I know. I even tried different jumper settings in the RADs, and still nothing. I notice the E1 cables are connected right because if I change them it puts down the physical interface in the routers.

My question is does anybody has used these RAD uci-hs modules for this application and how did you make it work??




Re: RAD uci-hs interface converter with cisco routers

I think you have to set the right kind of clock source in the RAD. In the two RAD units one should serve as Clock source and the other as Clock recieve.

In the live telco network , your telco will serve as the clock source and RAD should recieve the clock.