ADTRAN 1200103L2, User Manual

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Chapter 3. Operation
4
FXO+ Dual Voice Option Module User Manual 61200.103L2-1
2-Wire Status
There are three information fields, Busy, Ringing, and
Message-Waiting (MW). See Figure 3-3. An asterisk
(*) indicates an item is active.
Figure 3-3
2-Wire Status Display
Busy
An asterisk is present if loop current is flowing
through the 2-wire circuit.
Ringing
An asterisk is present if ringing voltage is being
applied to the 2-wire input.
MW (Message-Waiting)
An asterisk is present if 150 VDC message-waiting
voltage is applied between tip and ring.
View Signaling Bits
View Sig Bits is used to view the status of the RX and
TX signaling bits in the DS1 stream. See Figure 3-4.
The status of both the A and B bits is displayed.
Figure 3-4
View Signaling Bits Display