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Administering E1 and T1 Services
Using Net/E1 and Net/T1 status windows
MAX Administration Guide
5-9
In the preceding example, the first line of the Line Stat window shows the window number
followed by columns for channels 1 through 10. The second line begins with the line number,
followed by the link status, which is indicated by one of the two-character abbreviations listed
in Table 5-3. Following the link status is a single-character that indicates channel status.
(Table 5-4 lists the channel-status indicators.) The third line has column headers for the
remaining channels. The fourth line continues where the second line left off, showing the
status of the remaining channels.
Note:
If the MAX 3000 unit is configured for Drop-and-Insert functionality, and a Red Alarm
(RA) or Loss of Synch condition is detected, the failure is conveyed to the device by sending
an all ones (A1S) over Line 2. The Red Alarm indicates the line is not connected, improperly
configured, experiencing a very high error rate, or is not supplying adequate WAN
synchronization. The Alarm indicator light illuminates when the line is in this state. During the
time this failure is active, devices connected to Line 2 cannot place calls.
Table 5-3 summarizes the link-status indicators that appear in the Line Stats window.
Table 5-3. Link-status indicators
Link status
Mnemonic
Description
LA
Link active
The line is active and physically connected.
RA
Red Alarm/Loss
of Sync
The line is not connected or is improperly config-
ured, experiencing a very high error rate, or is not
supplying adequate synchronization. The Alarm
indicator light illuminates when the line is in this
state.
YA
Yellow Alarm
The MAX unit is receiving a Yellow Alarm pat-
tern. The Yellow Alarm pattern is sent to the unit to
indicate that the other end of the line cannot recog-
nize the signals the unit is transmitting. The Alarm
indicator light illuminates when the line is in this
state.
DF
D-channel fail-
ure
The D channel for a PRI line is not currently com-
municating.
1S
Keep alive (all
ones). Also
known as Blue
Alarm.
A signal is being sent from the T1 (or E1) network
to the MAX unit to indicate that the T1 line is cur-
rently inoperative. The Alarm light illuminates
when the line is in this state.
DS
Disabled link
The line is physically connected, but you have dis-
abled the line in the Line N profile.