loopback

Last Updated : Nov 06, 2012 |

Puts a T1 or E1 line into loopback mode. Use no loopback to disable loopback mode.

Syntax

For an E1 line:

loopback {[local {line | payload}] | diag}

no loopback

For a T1 line:

loopback {[local {line | payload}] | diag | [remote {line | payload}]

no loopback


Parameter	Description	Possible Values	Default Value
local	Keyword indicating that the controller loop the internal transmit signal back to the internal receive signal
line	Keyword indicating that the controller loop the external line signal back toward the network without reframing the DS1 signal
payload	Keyword indicating that the controller loop the external line signal back toward the network and reframes the DS1 signal
diag	Keyword indicating that a loopback to the device is in place
remote	Keyword indicating to create either a remote payload or a remote line loopback. Only in esf framing.

read-write

interface:Controller

The following example establishes a local line loopback on the controller interface:

Gxxx-001(super-controller:5/1)# loopback local line

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