2 x Routers Back-to-back

[ianmair3291]

I have two Cisco GWs, each has a serial interface module. I want to set them up back-to-back to send VOIP calls across the link between the routers (have set up voice using ethernet link, just need to swap to serial link now)

I have CAB-SS-X21FC (DCE) and CAB-SS-X21MT (DTE) cables connected together, then connected to Serial0/2/0 on each GW.

I am struggling to find any documentation on how to configure my GWs to enable this link between them.

Is anyone able to post example config please?

Many thanks

[paolo bevilacqua]

Just use serial interface configuration according to documentation and your study course,, and that's all.

Then on DCE side you can change clock speed to play.

[paolo bevilacqua]

Start looking at show controllers serial xxx, show interface serial xxx

[ianmair3291]

I disabled frame-relay in the end and just used HDLC, which worked.

I set the clock speed on the DCE router only