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New Member

Remote Dialin via Modem

I am attempting to set up a US Robotics modem to the console port of a Cisco 837 router. I have gone through the Cabling Guide for Console and AUX Ports guide from Cisco's web site.

Based on this information I was able to use a Cat5e straight through patch cable and a custom wired DB25 adapter to connect to the router. With this setup I am able to dial in to the modem through my PBX and interface with the router.

However, I am trying to purchase an off the shelf adapter and cable solution and cannot seem to find the right combination.

I have tried a CAB-25AS-MMOD adapter with a Cat5e straight through patch cable, a Cat5e crossover patch cable and a CAB-500RJ rolled cable from Cisco. None of these combinations work.

Am I using the wrong DB25 adapter? Can someone point me in the direction of the part numbers that will allow me do this with off the shelf parts?

Thanks for the help.


New Member

Re: Remote Dialin via Modem

New Member

Re: Remote Dialin via Modem

Thanks for the post. What I found out is that the CAB-500RJ was not a rolled cable like I thought or it was manufactured incorrectly. I cut one end of the cable off and put on a new connector in the reverse orientation. I then used this modified cable with the CAB-25AS-MMOD adapter and it worked.

New Member

Re: Remote Dialin via Modem

There is also a DB25 to DB9 connector that comes with the 1841 routers with a part number of 29-4043-01 stamped on it that works nicely with the standard Cisco DB9-RJ45 console cable for connecting to a modem.