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WIC card failure

I'm working with a 1602 with an internal 56k CSU. Tested the device in house with no problems. I sent this device to an installer in a remote location, but was unsuccesful getting the circuit to come up. This was to replace the current 1600.

When I got the device back, the interface would come up for approx. 1 min., then go up/up (looped).

My question is, has anyone ran across a situation where the wrong cable plugged into an internal CSU damaged the CSU?


Re: WIC card failure

Since there has been no response to your post, it appears to be either too complex or too rare an issue for other forum members to assist you. If you don't get a suitable response to your post, you may wish to review our resources at the online Technical Assistance Center ( or speak with a TAC engineer. You can open a TAC case online at

If anyone else in the forum has some advice, please reply to this thread.

Thank you for posting.