ADTRAN 1200305L1 system manual Modules FXO-4/8 Status RX Abcd, Modules FXO-4/8 Status TX Abcd

Section 4, User Interface Guide	ATLAS 550 System Manual
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.

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.

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

156 © 2002 ADTRAN, Inc. 61200305L1-1F