Configuring T1 Controllers on cisco router

Configuring T1 Controllers

Step 1	enable	Enables privileged EXEC mode. Enter your password if prompted.
Step 2	configure terminal	Enters global configuration mode.
Step 3	card type {e1 | t1} slot subslot Example: Router(config)# card type t1 0 0	Sets the card type. The command has the following syntax: •slot—Slot number of the interface. •subslot—0. When the command is used for the first time, the configuration takes effect immediately. A subsequent change in the card type does not take effect unless you enter the reload command or reboot the router. Note When you use the card type command to change the configuration of an installed card, you must first use the no card type {e1 | t1} slot subslot command. Then use the card type {e1 | t1} slot subslot command for the new configuration information.
Step 4	Router(config-controller)# framing esf	Specifies the framing type.
Step 5	Router(config-controller)# linecode b8zs	Specifies the line code format.
Step 6	Router(config-controller)# channel-group 0 timeslots 1-24 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 default speed of the channel-group is 64. •The supported range for channel-group is 0 to 23.
Step 7	Router(config-controller)# cablelength {long [-15db | -22.5db | -7.5db | 0db] short [110ft | 220ft | 330ft| 440ft | 550ft | 600ft]}	Configures the cable length.
Step 8	Router(config-controller)# exit	Exits controller configuration mode.
Step 9	Router(config)# interface serial slot/port:channel	Configures the serial interface. Specify the T1 slot (always 0), port number, and channel-group.
Step 10	Router(config-if)# encapsulation ppp	Enters the following command to configure PPP encapsulation.
Step 11	Router(config-if)# keepalive [period [retries]]	Enables keepalive packets on the interface and specify the number of times that keepalive packets will be sent without a response the interface is brought down:
Step 12	exit Example: Router(config)# exit Router#	Exits configuration mode.

Configuring E1 Controllers on cisco router

Configuring E1 Controllers

Step 1 
 enable

Example:
Router> enable
 Enables privileged EXEC mode.
•Enter your password if prompted.

Step 2 
 configure terminal

Example:
Router# configure terminal
 Enters global configuration mode.

Step 3 
 controller e1 slot/port

Example:
Router(config)# controller e1 0/0

Router(config-controller)#
 Specifies the controller that you want to configure.

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.

Step 10 
 keepalive [period [retries]]

Example:
Router(config-if)# keepalive [period [retries]]
 Enables keepalive packets on the interface and specify the number of times keepalive packets are sent without a response before the router disables the interface.

Step 11 
 Router(config-if)# end
Router#
 Exits interface configuration mode.