Section 4, User Interface Guide ATLAS 550 System Manual
156 © 2002 ADTRAN, Inc. 61200305L1-1F
MODULES (FXO-4/8) > STATUS > RX ABCD
Read security: 5
Receive Signaling bits have local significance only, and represent signaling between the ATLAS 550
Controller and the voice port if the port is configured in the DIAL PLAN. The bit pattern is formatted ESF
RBS.
MODULES (FXO-4/8) > STATUS > TX ABCD
Read security: 5
Transmit Signaling bits have local significance only, and represent signaling between the ATLAS 550
Controller and the voice port if the port is configured in the DIAL PLAN. The bit pattern is formatted ESF
RBS.
MODULES (FXO-4/8) > TEST
Write security: 4; Read security: 5
The TEST options initiate different types of tests and display test results.
MODULES (FXO-4/8) > TEST > PORT
Write security: 5; Read security: 5
Displays the operating port. There are 4 available interfaces on the Quad FXO Option Module and 8 on the
Octal FXO Option Module.
MODULES (FXO-4/8) > TEST > TEST 2W
Write security: 4; Read security: 5
Activates 2W (FXO) tests on a per-port basis. Options include OFF, LOOP OPEN, LOOP CLOSED, and RING
GROUND. The 2W tests will disrupt the active call on the selected FXO port. Table 3 displays the state of
the 2W conductors during each test.
LO Loop open test is currently running.
LC-T/R OK Loop closed test is currently running and normal T/R polarity is detected.
LC-NO BATTERY Loop closed test is currently running and no loop batter is detected.
LC-T/R ROLLED Loop closed test is currently running and reverse T/R polarity is detected.
RING GND Tip Open test is currently running, but ring ground is detected.
Table 4. FXO 2W State Table
TEST TIP OUTPUT RING OUTPUT
Off No test active No test active
Loop Open High impedance High impedance
Loop Closed Off-hook impedance Off-hook impedance
Ring Ground High impedance R to ground