No Carrier Detect T1 CSU/DSU WIC 2600 Router

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May 3rd, 2007
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When we loopback the WIC, the far end sees a good connection, but when the loopback is released, the CD LED goes out.


Crossed wires maybe?


It's a remote site, so I have not double checked yet.

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paolo bevilacqua Thu, 05/10/2007 - 12:36
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Yes, crossed wires would behave like that.


hope this helps, please rate post if it does!

KEVALSONP Thu, 05/10/2007 - 12:37
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I will check.


It will be not this Friday, but next.


I will post back what I find.


Thanks

scottmac Thu, 05/10/2007 - 13:53
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Protocol mismatch would also behave like that (i.e., PPP on one side, HDLC or Frame-Relay on the other).


Good Luck


Scott


paolo bevilacqua Thu, 05/10/2007 - 14:04
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Scott, I wouldn't agree. On a L2 protocol mismatch you will have LEDs OK, controller and interface up, line protocol down.

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