CRC Errors

[abbas.ali]

I have point to point T1 with HDLC encapsulation. These are new 3745 routers with built-in CSU/DSU. The distance between the two locations will be around 12 miles. I am getting CRC and Input errors. The Telco ran the test and assured that nothing is wrong at their end, and advised me to replace the cable. I replaced the cables at both ends, but still the same problem. What other things can be done to track the problem?

Thanks in advance.

[jolmo]

For troubleshooting procedures on T1 you can take a look at:

http://www.cisco.com/en/US/tech/tk713/tk628/technologies_troubleshooting_procedures09186a00800a758d.shtml

Hope this helps

[sidharthar]

even i am having the same problems with two 3725's and one 3745. i am using VWIC-2MFT-T1...have repleced router and cards but not getting anywhere TAC has a case open but i am getting the run around...saw an article on a bug with wic2t's that they will give CRC's if put in the WIC slots have to use an NM-2W or another NM flavour