ADTRAN 616, 612, 606, 624, 604 system manual Indicates whether a test is in progress

Section 4 User Interface Guide Total Access 600 Series System Manual

INTERFACES (T1) > STATUS > ALARMS > CURRENT ALARMS

Displays the current alarms on the T1 interface. An asterisk in a field indicates that an alarm is active.

LOS	Loss of Signal. No signal detected on port interface.
RED	Not able to frame data received on the port. Alternately referred to as Out of
	Frame (OOF). RED alarm most frequently occurs when there is a framing
	mismatch on the T1 interface.
YELLOW	Remote alarm indicator (RAI) being received on port. A YELLOW alarm indicates
	that the remote unit is not receiving properly framed information from your unit.
BLUE	Receiving unframed all ones from the port alarm indicator signal (AIS). A BLUE
	alarm is sent to notify the unit that equipment upstream is disconnected or
	malfunctioning.

INTERFACES (T1) > STATUS > ALARMS > ALARM HISTORY

Displays the alarm history for the T1 interface. An asterisk in a field indicates that an alarm has occurred on the T1 interface since the last clear history. Refer to Interfaces (T1) > Status > Alarms > Current Alarms for more details on listed alarm conditions.

INTERFACES (T1) > STATUS > ALARMS > CLEAR HISTORY

Selecting this activator will clear the Alarm History for the T1 interface.

INTERFACES (T1) > STATUS > RX LEVEL

Displays the level (in dB) of the received T1 signal on the interface.

INTERFACES (T1) > TEST

These options are used to initiate local and remote loopback tests and display the test status.

INTERFACES (T1) > TEST > LOC LB

Loopback of the local unit. Choices are NONE, LINE, and PAYLOAD. LINE loopback loops all of the received data back toward the network. The transmitted data is the identical line code that was received, including any bipolar violations. LINE loopbacks tests right up to the T1 interface of the ADTRAN unit. PAYLOAD loopback is similar to line loopback except that the framing is extracted from the received data and then regenerated for the transmitted data. PAYLOAD loopbacks not only verify the T1 circuit, but also the internal hardware of the local ADTRAN device. NONE disables the loopback test. Default is NONE.

INTERFACES (T1) > TEST > REM LB

Sends a loopback command across the network to a remote unit over the FDL, which causes the remote unit initiate a local LINE or PAYLOAD loopback (whichever is specified). The remote loopback is only available when the T1 is configured for ESF mode.

INTERFACES (T1) > TEST > TEST STATUS

Indicates whether a test is in progress.

74 © 2004 ADTRAN, Inc. 61200624L1-1B