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20-3
Cisco ASR 901 Series Aggregation Services Router Software Configuration Guide
OL-23826-09
Chapter 20 Configuring T1/E1 Controllers
Configuring E1 Controllers
Step 4
framing {crc4 | no-crc4}
Example:
Router(config-controller)# framing
crc4
Specifies the framing type.
Step 5
linecode hdb3
Example:
Router(config-controller)# linecode
hdb3
Specifies the line code format.
Step 6
Router(config-controller)#
channel-group
channel-no
timeslots
timeslot-list
speed {64}
Example:
Router(config-controller)#
channel-group 0 timeslots 1-31
speed 64
Specifies the channel-group and time slots to be mapped. After you
configure a channel-group, the serial interface is automatically created.
The syntax is:
• channel-no—ID number to identify the channel group. The valid
range is from 0–30.
• timeslot-list—Timeslots (DS0s) to include in this channel-group. The
valid time slots are from 1–31.
• speed {64}—The speed of the DS0.
The example configures the channel-group and time slots for the E1
controller:
Note When you are using the channel-group channel-no timeslots
timeslot-list {64} command to change the configuration of an
installed card, you must enter the no channel-group channel-no
timeslots timeslot-list speed {64} command first. Then enter the
channel-group channel-no timeslots timeslot-list {64} command
for the new configuration information.
Step 7
Router(config-controller)# exit
Router(config)#
Exits controller configuration mode.
Step 8
interface serial
slot
/
port
:channel
Example:
Router(config)# interface serial
0/0:1
Router(config-if)#
Configures the serial interface. Specify the E1 slot, port number, and
channel-group.
When the prompt changes to
Router(config-if), you have entered
interface configuration mode.
Note To see a list of the configuration commands available to you, enter
? at the prompt or press the Help key while in the configuration
mode.
Step 9
encapsulation ppp
Example:
Router(config-if)# encapsulation
ppp
Specifies PPP encapsulation on the interface.
Command Purpose