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No Carrier Detect T1 CSU/DSU WIC 2600 Router

KEVALSONP
Level 1
Level 1

‎05-03-2007 09:22 AM - edited ‎03-03-2019 04:49 PM

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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4 Replies 4

paolo bevilacqua
Hall of Fame
Hall of Fame

‎05-10-2007 12:36 PM

Yes, crossed wires would behave like that.

hope this helps, please rate post if it does!

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KEVALSONP
Level 1
Level 1
In response to paolo bevilacqua

‎05-10-2007 12:37 PM

I will check.

It will be not this Friday, but next.

I will post back what I find.

Thanks

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scottmac
Level 10
Level 10

‎05-10-2007 01:53 PM

Protocol mismatch would also behave like that (i.e., PPP on one side, HDLC or Frame-Relay on the other).

Good Luck

Scott

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paolo bevilacqua
Hall of Fame
Hall of Fame
In response to scottmac

‎05-10-2007 02:04 PM

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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