Information Technology Reference
In-Depth Information
Step 2
Set the E1 clock source correctly from the controller configuration mode.
maui-nas-03(config-controlle)#
clock source line primary
Framing Loss Seconds Counter Is Increasing
Check to see whether the framing format configured on the port matches the framing format of the line.
You can check this by looking for “Framing is {CRC4|no CRC4}” in the
show controller e1
output.
Step 1
To change the framing format, use the
framing {CRC4 | no CRC4
} command in the controller
configuration mode, as shown here:
Step 2
maui-nas-03(config-controlle)#
framing crc4
Line Code Violations Are Increasing
Step 1
Check to see whether the linecoding configured on the port matches the framing format of the line. You
can check this by looking for “Line Code is {AMI/HDB3}” in the
show controller e1
output.
Step 2
To change the linecoding, use the
linecode {ami | hdb3}
command in the controller configuration mode,
as shown here:
maui-nas-03(config-controlle)#
linecode ami
Verifying That isdn switchtype and pri-group Are Configured Correctly
Use the
show running-config
command to check whether
isdn switchtype
and
pri-group timeslots
are
configured correctly. Contact your service provider for correct values.
To change the
isdn switchtype
and
pri-group
, use these lines:
maui-nas-03#
configure terminal
maui-nas-03(config)#
isdn switch-type primary-net5
maui-nas-03(config)#
controller e1 0
maui-nas-03(config-controlle)#
pri-group timeslots 1-31
Verifying the Signaling Channel
If the error counters do not increase but the problem persists, verify that the signaling channel is up and
configured correctly.
Step 1
Run the
show interface serial
x
:15
command, where x should be replaced by the interface number.
Step 2
Check to see whether the interface is up. If the interface is not up, use the
no shutdown
command to
bring up the interface.
maui-nas-03#
config terminal
Enter configuration commands, one per line. End with CNTL/Z.
maui-nas-03(config)#
interface serial 0:15
maui-nas-03(config-if)#
no shutdown
