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Community Member

T1 CSU testing question

I just purchased 2 cisco 1841 routers with csu cards in them to connect a remote office through a T1. I have them setup but I am by no means a cisco expert. I would like to test them here before I ship one of them to our remote office. When I connect the 2 routers with a straight through or crossover cable all I get is a yellow alarm light on the csu card. Is there any way to connect these so I can confirm everything is setup correctly before I ship the one?

Thanks

3 REPLIES
Community Member

Re: T1 CSU testing question

You will need to make a T1 crossover cable.

pins 1,2 to 4,5

http://www.ldfacts.com/faq_files/How-to-Make-a-T1-Crossover-cable.htm

Community Member

Re: T1 CSU testing question

Thank you very much. I will give it a try.

Silver

Re: T1 CSU testing question

As stated below the cross over cable will allow connection between the two routers. You can put on a basic config to run a live test. Something basic is all that is needed:

Router A

inter s0/0 (or whatever interface it is)

ip address 10.1.1.1 255.255.255.252

no shut

ip route 0.0.0.0 0.0.0.0 s0/0

Router B

inter s0/0

ip address 10.1.1.2 255.255.255.252

no shut

ip route 0.0.0.0 0.0.0.0 s0/0

then try to ping across from router to router. But to keep it even more simple, if the line comes up then you are good, just do a no shut on the interfaces once the cable is plugged in and do a sh ip int brie to see if the interfaces are up or not.

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