I have two routers cisco 1720 with 56/64 DSU/CSU WIC and t1 dsu/csu wic and a cisco 1602 with t1 dsu/csu wic . I wanted to connect them back to back for testing purposes. Itried using a crossover cable and I couldn't get a link for both of them is there something that I'm missing or doing wrong in here? I tried to search for this and the only thing that keeps on popping up was to use a Serial Cable which both routers don't have serial inputs. Thank you in advance for advices and answers.
First make sure you have a correct cross cable. I assume you are attempting to connect a wic-1dsu-56k4 and a wic-1dsu-t1.
These use different pinout. A t1 uses 1,2,4,5 a 56/64 uses 1,2,7,8. I have not made a cable like this but I suspect you should be able to use 1-7,2-8,4-1,5-2 where the first number in the pair is the t1 end of the cable.
Now you must reconfigure also the t1 card to run as a fractional using only the first channel.
Hi everyone, I would like to thank you in advance for any help you can provide a newcomer like myself!
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