Avaya M770 Manuel D’Utilisation

Chapter 5

Managing Physical Ports

52

Avaya M770 ATM Switch User’s Guide

You can specify the coaxial (BNC) cable length for a DS3 port. The coaxial cable 
length is up to these numbers in feet:
•

225: 0-225 feet, 0-68 meters.

•

450: 225-450 feet, 68-137 meters.

The default cable length is 225 (i.e. 0-225 feet).

You must disable the physical port before you can change, clear or reset any 

physical port parameters. For more information about how to disable a physical 
port, see Disabling a Physical Port on page 49.

To configure the coaxial cable length for a DS3 port, use the

pport set

 

length

 

command. 

You can specify for a DS3 port the mapping mode used for the transport of ATM 
cells over DS3. The mapping mode is either ADM or PLCP. The default mapping 
mode is ADM.

You must disable the physical port before you can change, clear or reset any 

physical port parameters. For more information about how to disable a physical 
port, see Disabling a Physical Port on page 49.

To set the mapping mode for a DS3 port, use the

pport set

 

mapping

 command. 

Command:

M4-DS3s8:/>pport set length <<slot>.<port>> [225|450]

Example:

M4-DS3s8:/>pport set length 8.1 225

Parameters:

<pport id>

The physical port identifier in the form <slot>.<port number>.

225

Sets the allowable coaxial cable length to: 
0-225 feet, 0-68 meters.

450

Sets the allowable coaxial cable length to: 
225-450 feet, 68-137 meters.

Command:

M4-DS3s8:/>pport set mapping <<slot>.<port>> [adm | plcp]

Example:

M4-DS3s8:/>pport set mapping 8.2 plcp

Parameters:

<pport id>

The physical port identifier in the form <slot>.<port.number>.

adm

Sets the mapping mode to ADM. The default setting is ADM.

plcp

Sets the mapping mode to PLCP.