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Chapter 3 – Software
MultiAccess Communications Server MA30120User Guide 105
Statistics & Logs > Line Interface Status
Statistics & Logs > Line Interface Status
This screen displays a snap shot of the layer one status of each digital line interface that is enabled. The digital
line interfaces will automatically be enabled upon installation of an MA30EXP modem module (into the
corresponding slot on the motherboard). The information displayed reflects the status of the interface’s receiver
circuitry.
The overall status of the interface is listed first, stating the alarm status and activity status. The D Channel
Status applies when the line interface is configured for T1PRI or E1PRI and connected to a T1or E1 PRI ISDN
line (T1RBS lines do not have a D Channel). The 3
rd
item listed is the Framer Status, this numerical value is
read by the system to determine the layer one status. Various bit error registers are also listed. The final
category listed is the DL-Bit, which displays the contents of the Facility Data Link channel of an Extended Super
Frame.
No Alarm Active - means the line interface is receiving a properly framed signal and that at least one modem
associated with this line interface has a call in progress. The front panel LEDs will reflect the LA on solid, with
the LC and LS off.
No Alarm Inactive - means the line interface is receiving a properly framed signal and that all modems
associated with this line are waiting to establish a call. The front panel LEDs will reflect the LA on solid, with the
LC and LS off (same as above).
Red Alarm - is equal to Los of Signal. This will be displayed when the line cable is unplugged (or similar
termination or wiring problem), or when the signal present on the line is smaller than the expected level defined
by the “Receive Sensitivity” setting. The front panel LEDs will reflect the LC on solid, with the LA and LS off.
Yellow Alarm - is a specific layer 1 pattern detected within a properly framed signal. A yellow alarm indicates
the remote end is experiencing a problem (of a various nature). Yellow alarm is also known as RAI (Remote
Alarm Indication). When the MultiAccess indicates (receives) a yellow alarm, it means it’s receiver circuitry is