T1 Port Monitoring Commands

Configuring the T1 Physical Link

remote end removes the framing bits from the received signal and recovers the transmitted data. This same data is then reframed and transmitted back to the local end.

Enabling Loopback Mode

To enable a loopback mode, use one of the following commands:

enable	ports	<portlist>	t1	loopback	local
enable	ports	<portlist>	t1	loopback network [line payload]
enable	ports	<portlist>	t1	loopback	remote [line payload]

Disabling Loopback Mode

Use the following command to return the near and remote side of a T1 loopback mode to normal mode:

disable ports <portlist> t1 loopback

You can also use the following command to return the remote port to normal function from loopback mode:

enable ports <portlist> t1 loopback remote loopdown

Table 2-2 describes the commands used to monitor a T1 port.

Table 2-2:T1 Port Monitoring Commands

Command	Description

disable ports <portlist> t1 loopback	Disable the current loopback mode and return
	to normal function.

enable ports <portlist> t1 loopback [local network [line payload] remote [line

payload loopdown]]

show ports {<portlist>} {t1} stats

show ports {<portlist>} t1 alarms

show ports {<portlist>} t1 configuration

Enable the port to locally loopback, to cause the remote link to loopback, and to stop the loopback.

Displays real-time port statistics.

Displays real-time port alarms.

Displays the port configuration and status.

2-10	WM-4T1i Module Installation and User Guide