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Community Member

input, crc and frame errors on Wic 56kdsu

Seeing input, frame and crc errors on Cisco 1720 with internal DSU. Telco has tested 56k frame relay line 4 times and says thier circuit is fine. they say they can run to csu clean but when they try to run to our dsu they see errors.

DSU is set to dds, clock source=line and 56k rate. Router, DSU and Cable has been swapped running ios 12-1(14). Also when I do a sh service it shows as 56k switched circuit even though I have set DSU to DDS

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Community Member

Re: input, crc and frame errors on Wic 56kdsu

Resolved. On 4th call to Telco they rebuilt circuit from Z end back to the C.O. ..suprise, no more errors. wet cable pair suspected.

Community Member

Re: input, crc and frame errors on Wic 56kdsu

Hmm wet cable pair....

I'm surprised the telco didn't try the 'Satellite Wobble' excuse!

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