Loopback Attributes

In this user interface, you can set the loopback attributes of a microwave interface.

Navigation Path

In the NE Explorer, select an NE and choose Configuration > Interface Management > Microwave Interface from the Function Tree. Click the Loopback Attributes tab.

NOTICE:

As a loopback interrupts services, it is only used for fault location and must be released after the fault is removed.

Parameters

**Table 1** Descriptions of the parameters for microwave interface Loopback Attributes
Field	Value	Description
Port	slot name-board name-port number(port name)	Displays the name of a microwave port.
Composite Port Loopback	Non-Loopback, Inloop, Outloop Default: Non-Loopback	Inloop indicates that loopback occurs in the composite signals to be transmitted to the remote end. Outloop indicates that loopback occurs in the composite signals to be received. Generally, this parameter takes the default value. Before performing the loopback operation for the IF board, disable the AM function at the two ends of a link.
MAC Loopback	Non-Loopback, Inloop, Outloop	Sets the loopback state of the MAC layer.
PHY Loopback	Non-Loopback, Inloop, Outloop	Specifies the physical loopback. Non-Loopback: When you set PHY Loopback to Non-Loopback, the equipment operates in the normal state. Inloop: When you set PHY Loopback to Inloop, the service from the cross-connect card is transmitted back to the same cross-connect card in the equipment. The inloop affects services that are configured on relevant ports and is used for fault locating. Outloop: When you set PHY Loopback to Outloop, a signal received on the port at the receive end is transmitted back to the port where the signal is transmitted. NOTE: After you set a loopback, normal services are interrupted.