Specifying The Cable Length - Cisco 10000 Series Configuration Manual

Channelized T3 Commands

Specifying the Cable Length

To specify the cable length for the T3 controller, use the cablelength command.
[no] cablelength feet
Where feet is a number from 0 to 450.
The default value is 249 feet.
Use the no form of this command to restore the default cable length.
In the following example, the cable length value is set to 40 feet.
Router(config)# controller T3 1/0/0
Router(config-controller)# cablelength 40
This command causes the system to use one of two settings for impedance matching and pulse shaping,
Note
one setting for any cable length between 0 and 249 feet and another setting for any cable length greater
than 250 feet. The exact value you enter is stored in the configuration file.
Setting the Framing Type
To specify a framing type for the channelized T3 controller, use the framing command.
[no] framing
The default is auto-detect.
Use the no form of the command to return the framing type to its default.
You can instruct the 4-Port Channelized T3 Half-Height line card to detect the framing type from the far
end and transmit that same framing type as follows:
Router(config)# controller T3 1/0/0
Router(config-controller)# framing auto-detect
Entering MDL Messages
You can configure maintenance data link (MDL) messages (as defined in the ANSI T1.107a-1990
specification) on the channelized T3 interface.
MDL messages are supported only when the T3 framing is set for C-bit parity. (See the
Note
Framing Type" section on page
To configure MDL messages, use the mdl command.
[no] mdl
port
Where:
•
•
•
Cisco 10000 Series Router Line Card Configuaration Guide
4-14
[ | |
c-bit m23
{ { |
transmit path idle-signal
| }
generator id_string
transmit path enables transmission of the MDL path message.
transmit idle-signal enables transmission of the MDL idle signal message.
eic is the equipment identification code (up to 10 characters).
Chapter 4 4-Port Channelized T3 Half-Height Line Card Configuration
]
f
4-14.)
|
test-signal
}
} | { | |
string eic lic fic
"Setting the
| | |
unit pfi
OL-8834-04