Enterasys Networks Security Router X-PeditionTM - Manual (Page 101)

Troubleshooting T1/E1 & T3/E3 Links
XSR User’s Guide 4-13
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