+------------+Ser 1 +------------+ PnP T1 +------------+
| Cisco 2501 +-------+ Adtran TSU +-------------+ PM3-2A-T |
+------------+ +------------+ (Line1)| |
+----+-------+
| (Line0)
|
23B/D Pri<-+
Dialup at Remote Pop
We see red blips on the Adtran TSU at least every 2 minutes, according to
the history on the Adtran it is a PLL error. We have had Bell South
looking into it, but they aren't finding any problems from their side,
they are willing to work with us, but neither of us know which way to
turn, we have tried another Adtran TSU, but it does the same thing. I
notice a lot of CRC errors on the Cisco when I do a sh interface s1, but
they don't necessarily correlate with the Red Blips I see on the Adtran.
By the way, the red blips are under the error light on the Adtran, the
funny part to me is that the Adtran will, in the history, show PLL error,
but does not show a Red Alarm. The PM3 doesn't show any type of errors on
line1, when this is happening. The Bell South tech, was monitoring at the
office and reported seeing a lot of timing slips.
Anybody have any ideas of what to try, I have tried INT and INT-INV
both on the Adtran for DTE TX CLK in the Port Config. On the network setup
both sides are setup for B8ZS, ESF, the Adtran is set for internal clock,
because the PM3 will not supply clock.
Any suggestions, ideas.
Later
Kelley