Port

- - - - Display the corresponding SDH interface.

Displays the corresponding SDH interface.

Optical Port Name

-

Displays or sets the optical port name.

Laser Switch

On, Off

Default: on

Displays or sets the interface laser switch status.

Only the SDH optical interface board supports this parameter. Normally, the setting is "On".

Optical (Electrical) Interface Loopback

No Loopback, Inner Loopback, Outer Loopback

Default: No loopback

Displays or sets the loopback status of the SDH interface.

• "No loopback" means cancel or do not perform loopback operation.
• "Inner loopback" means loopback the SDH signal sent to the opposite end.
• "External loopback" means loopback of the received SDH signal.

This function is generally used for fault localization of each SDH interface. "Optical (electrical) port loopback" is a diagnostic function, and its use will affect the service of the relevant port, so please use it with caution.

In general, the setting is "No Loopback".

VC4 Channel

-VC4 Channel

Displays the corresponding VC4 channel.

VC4 Loopback

No loopback, inner loopback, outer loopback

Default: No loopback

Displays or sets the loopback status of the line unit's VC4 channel.

• "No loopback" means that the loopback operation is canceled or not performed.
• "Inner loopback" means to loopback the VC4 signal sent to the opposite end.
• "Outer loopback" loops back the received VC4 signal.

This function is generally used for fault localization of each VC4 channel. "VC4 loopback" is a diagnostic function, and its use will affect the service of the relevant port, so please use it with caution.

Under normal circumstances, the setting is "No Loopback".

VC3 Channel

-Displays the corresponding VC3 channel.

Displays the corresponding VC3 channel.

VC3 Loopback

No loopback, inner loopback, outer loopback

Default: No loopback

Displays or sets the loopback status of the VC3 channel of the line unit.

• "No loopback" means that the loopback operation is canceled or not performed.
• "Inner loopback" means to loopback the VC3 signal sent to the opposite end.
• "Outer loopback" loops back the received VC3 signal.

This function is generally used for fault localization of each VC3 channel. "VC3 loopback" is a diagnostic function, and its use will affect the service of the relevant port, so please use it with caution.

Under normal circumstances, the setting is "No Loopback".

VC12 Channel

-

Displays the corresponding VC12 channel.

VC12 Loopback

No loopback, inner loopback, outer loopback

Default: No loopback

Displays or sets the loopback status of the VC12 channels of the line unit.

• "No loopback" means that the loopback operation is canceled or not performed.
• "Inner loopback" means to loopback the VC12 signal sent to the opposite end.
• "External loopback" loops back the received VC12 signal.

This function is generally used to locate faults on each VC12 channel. "VC12 loopback" is a diagnostic function, and its use will affect the service of the relevant port, so please use it with caution.

Under normal circumstances, the setting is "No Loopback".

Optical Interface

- - - - - Display the corresponding optical interface.

Displays the corresponding optical interface.

Automatic shutdown

Prohibit, Allow

Default: Prohibit

Displays or sets the "Auto Off" status of the laser.

Laser auto shutdown is a function to shut down the laser automatically when the optical interface does not carry service, fiber failure, or loss of received optical signal.

When "Allow" is set, "On Time (ms)", "Off Time (ms)" and "Long On Test Time (ms)" can be set. ".

On Time (ms)

1000~3000 in steps of 10.

Display or set the time to test whether the fiber is normal or not after turning off the laser, if it is an automatic turning on of the laser.

Off Time (ms)

2000~300000, step 10.

Display or set the time when the laser is turned off automatically (this parameter can be set only when the laser auto off function is turned on).

Long open test time (ms)

2000~300000, step 10.

Display or set the time to test whether the fiber is normal or not after turning off the laser, if the laser is turned on manually.