T1 in a router 2901

[jesusperezp]

I have a router 2901, It comes with two interfaces gigabilEthernet, I have a Frame Relay link, I am trying to conect a T1 on it but the T1 is not recognize, can you help me please?

[vmiller]

You need the correct WAN module.

Here is a link to keep handy, it lists just about every combination you could use.

http://www.cisco.com/c/en/us/products/routers/2900-series-integrated-services-routers-isr/relevant-interfaces-and-modules.html#serialwan

there are a few serial wan interfaces, i would discuss with my carrier on which one meets your needs.