Internal E1 with errors

[bizzaro]

I have an E1 on an opt. 11 connected to an Avaya gateway. The circuit comes up but is taking errors. I am seeing SLPDEL errors and after a while the circuit will drop. I think the issue is with the configuration, but can't find the exact cause. I am having a hard time trying to find the E1 parameters such as line coding and framing. This is a NTBK50AA.

 

[bizzaro]

I think clocking might be the problem. I am not sure if the ref clk should be enabled or not.

PRI2 LOOP 4 - ENBL
REF CLK: DSBL
SERVICE RESTORE: NO
ALARM STATUS: OOS NO AUTO STRT


.ssck 0
ENBL
CLOCK ACTIVE
CLOCK CONTROLLER - LOCKED TO SLOT 3
PREF - 3
SREF - FREE RUN
AUTO SWREF CLK - ENBL
NO ERROR

IP DB PORT 1 DSBL
IP DB PORT 2 DSBL
IP DB PORT 3 DSBL
IP DB PORT 4 DSBL
CALL SERVER CLK SRC: CC

 

[MossEng]

Which end is the Master, I suspect the Avaya is and this is the problem, your reference is the E1 PRI in slot 3, so you need to be the master/net/clocksource on link to the Avaya.

 

[bizzaro]

The Avaya is set for slave.

Loop 3 is connected to a carrier PRI and configured as USR.
Loop 4 is connected to the Avaya and configured as NET.

 

[Wane47]

user/net has nothing to do with clocking. If the clocking is not set up correctly you will have a lot of slips. if both switches have pstn on them, each switch should use their pstn circuit as the primary clock source for themselves. If one of them does not have a pstn circuit it should clock off the switch that does have a pstn circuit.