Enterasys Networks X-PeditionTM manual Configuring the D&I NIM, Framing Loss Seconds Increasing

Troubleshooting T1/E1 & T3/E3 Links

Framing Loss Seconds Increasing

If framing loss seconds are present on the T1/E1 line, usually there is a framing problem. Perform the following steps to correct this problem:

1.Ensure the framing format configured on the controller port matches the framing format of the line.

2.Set the T1/E1 framing mode from Controller mode if needed.

3.(T1 Only) Change the line build out (LBO) using the cablelength long or cablelength short command if needed.

Line Code Violations Increasing

If line code violations are present on the T1/E1 line, usually there is a line encoding problem. Perform the following steps to correct this problem:

1.Ensure the line coding format configured on the controller port matches the framing format of the line.

2.Set the T1/E1 linecode mode from Controller mode if needed.

3.(T1 Only) Change the line build out (LBO) using the cablelength long and cablelength short command if needed.

Configuring the D&I NIM

The following D&I configuration instructs the XSR to terminate timeslots 1 through 7 of controller T1-0/1/0 into a PPP channel and bypass the rest of the timeslots from T1 controller 0/1/0 to controller T1 0/1/1. Controller port T0/1/0 is connected to the Central Office and controller port T0/1/1 is connected to the PBX down stream. Serial 0/1/0:0 is the data channel on the Telco side of the NIM. Note that the clock source is set to line at the CO and internal locally. Alternately, if you require a line speed of 64 Kbps, you can use the default line coding B8ZS.

XSR(config)#controller t1 0/1/0

XSR(config-controller<T1-0/1/0>)#drop-and-insert-group

XSR(config-controller<T1-0/1/0>)#channel 0 timeslots 1-7 speed 56

XSR(config-controller<T1-0/1/0>)#clock source line

XSR(config-controller<T1-0/1/0>)#line ami

XSR(config-controller<T1-0/1/0>)#no shutdown

XSR(config-controller<T1-0/1/0>)#exit

XSR(config)#interface s1/0:0

XSR(config-if<S0/1/0:0>)#encapsulation ppp

XSR(config-if<S0/1/0:0>)#no shutdown

XSR(config-if<S0/1/0:0>)#exit

XSR(config)#controller t1 0/1/1

XSR(config-controller<T1-0/1/1>)#drop-and-insert-group

XSR(config-controller<T1-0/1/1>)#no channel 0

XSR(config-controller<T1-0/1/1>)#line ami

XSR(config-controller<T1-0/1/1>)#clock source internal

XSR(config-controller<T1-0/1/1>)#no shutdown

XSR User’s Guide 4-13