Re: (PM) line0 in loopback?

Doug McClure (dmcclure@infi.net)
Sat, 22 Nov 1997 16:57:54 -0500

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In reply to: Larry Vaden: "(PM) line0 in loopback?"

That's a loopback initiated from the telco side. The telco probably looped
it when they saw your PRI drop during reboot. That or the internal CSU is
acting up.

Doug

At 02:31 PM 11/22/97 -0600, Larry Vaden wrote:
>Twice after ComOS 3.7.2 was installed, line0 of a certain PM3 has ended up
>similar to this (with all corresponding ports in NO-SERVICE:
>
>mckts01> show line0
>---------------------- line0 - T1 Primary Rate ISDN ---------------
>
> Status: UP Framing: ESF Encoding: B8ZS PCM: u-law
> * Loopback *
> Receive Level: less than -22.5dB
>
> Alarms Violations
> ----------------------------- -----------------------------
> Blue 0 Bipolar 62560447
> Yellow 1 CRC Errors 0
> Receive Carrier Loss 205 Multiframe Sync 317489
> Loss of Sync 4
>
>
>
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