<CardNumber>

: limB | limC | limD | limE

Specifies the location of the voice/fax card whose channel you want to test.

<ChannelNumber>

: INTEGER (1..12)

Specifies the channel number within the selected card. The integer value ranges from 1 to 12.

<Action>

: disconnect | loopbackTest | terminateTest | forceConnect

The type of channel action you intend to perform. The available actions are as follows:

• loopbackTest. Starts the loopback test.
• terminateTest. Stops the loopback test.
• disconnect. Disconnects any existing connection.
• forceConnect. Currently not implemented.

<CardNumber>

: exp1 | exp2

Specifies the location of the voice/fax card whose channel you want to test.

<ChannelNumber>

: INTEGER (1..30)

Specifies the channel number within the selected card. The integer value ranges from 1 to 30.

<Action>

: disconnect | loopbackTest | terminateTest

The type of channel action you intend to perform. The available actions are as follows:

• loopbackTest. Starts the loopback test.
• terminateTest. Stops the loopback test.
• disconnect. Disconnects any existing connection.

Note: Issuing the loopback command before a call is established executes a local loopback test. Issuing the loopback command after a call is established executes a remote loopback test. (The ISDN/BRI voice module only supports remote loopback tests)