ADTRAN Tracer TRACER 2 x E1 User's Guide Page 254

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E1-A and E1-B Tests
242 AXS-200/805/855
E1-A/E1-B Loopbacks
E1-A/E1-B Loopbacks
Loopbacks are not available with Monitor 75 (ohm), Monitor 120 (ohm),
and Bridged test modes.
Press , select DSn/PDH, E1-A or E1-B, and Loopbacks.
³ Local: Select the local loopback
type.
Self-Loop loops the transmitter
(TX) of the AXS-200/805/855 to its
receiver (RX).
Local-NW: loops the receiver
(RX) of the AXS-200/805/855 to
the transmitter (TX), manual DS1
loopback towards the network.
³ LoopUp sends the selected loop up command.
³ LoopDown sends the selected loop down command.
³ Stop terminates the sending of the LoopUp or LoopDown command.
The status of the loopback command is displayed in the field located at the
bottom of the screen.
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