What modules are compatible with a 2621 router to add fe ports?

joehalford01

I currently have two t1 interface cards, two built in fe ports, and an NM-2W (two wan interface slots) network module. Looking here
Cisco 2600 Series Multiservice Platforms Interfaces and Modules - Cisco Systems; it looks like the only options I have for adding fe ports are the NM-1E and NM-4E modules (network modules with 1 or 4 FE ports). Is that correct? It looks like they didn't make a compatible interface card with FE LAN for the 2600, only the 1700 series. I only need one more FE, I was hoping I could get away with a single card (since we're not using the T1 interfaces); if I have to purchase a module, I might as well get the NM-4E. Thoughts? Cheats? Does the 1700 series interface card work in a 2600? I want to spend as little money as possible as this fe port is really just for some temporary routing until this project is finished.

Priston

What do you need the extra port for? What's connected to the other 2 ports? Is router on a stick out of the question?

joehalford01

We're changing internet carriers and I need a route to our new DMZ subnet; the old internet is still up, so everything is in a state of transition.