4-18
Figure 4
-
9 DS3 Facilities Provisioning
BIT ERROR RATE
DS3 DEGRADE=10E-5
INPUT LINE BRIDGE
Select All
NA
TX/RX INTERFACE A
1
2
3
1
2
3
TX/RX INTERFACE B
DS3 LINES
XMT ALARM DISABLE
OFF
XMT VMR DISABLE
ON
NA
OFF
ON
OFF
OFF
ON
OFF
OFF
ON
OFF
OFF
ON
OFF
OFF
ON
RCV ALARM DISABLE
OFF
RCV VMR DISABLE
OFF
AIS SIGNAL DISABLE
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
AIS SIGNAL TIMING
10/350
10/350
10/350
10/350
10/350
10/350
10/350
SELECT
ON
TO BRIDGE DS3 LINE 1 ONTO SELECTED
LINE(S) 2 AND/OR 3 TO PREVENT ALARMS ON UNUSED
LINE(S). SELECT
OFF
TO DISABLE FUNCTION.
SELECT
ON
TO DISABLE AIS (BLUE SIGNAL) INSERTION ON LINE
WHEN LOSS OF UPSTREAM DS3 FRAME IS DETECTED. SELECT
OFF
TO INSERT AIS (BLUE SIGNAL) WHEN RADIO OR DS3 FRAME LOSS
IS DETECTED.
SELECT
ON
TO DISABLE VIOLATION MONITORING AND REMOVAL (VMR) ON
LINE DUE TO LOSS OF UPSTREAM DS3 FRAME. DS3 PARITY ERRORS ARE NOT
REMOVED AND ARE PASSED ON TO NEXT SECTION. SELECT
OFF
TO ENABLE
VMR AND REMOVE DS3 PARITY ERRORS.
SELECT
OFF
TO REPORT ALL ALARMS. SELECT
ON
TO
DISABLE ALARMS FOR LINE.
LMW-9039-sm
06/03/03
SELECT
10/350
TO INSERT AIS (BLUE SIGNAL) WHEN DS3 FRAME LOSS IS DETECTED
FOR AT LEAST 10ms AND REMOVE AIS WHEN FRAME LOSS HAS CLEARED FOR 350ms.
SELECT
3/3
TO INSERT AIS WITHIN 3ms OF DS3 FRAME LOSS DETECTION AND REMOVAL
WITHIN 3ms AFTER FRAME LOSS CLEARS.
WHEN
Degrade Enable
IS SELECTED ON RADO CONFIGURATION PROVISIONING SCREEN,
SELECT APPROXIMATE ERROR RATE AT WHICH
BER Deg Alm
ALARM ACTIVATES AND RCVR
SWITCHING OCCURS: 10E-5 (1X10-5), 10E-6 (1X10-6), 10E-7 (1X10-7), OR 10E-8 (1X10-8).
WHEN
Degrade Disable
IS SELECTED, SELECT ERROR RATE AT WHICH
BER Deg Alm
ACTIVATES WITHOUT RCVRS SWITCHING.
Note
If inst
a
ll
a
tion
a
t both ends of
a
hop
a
re complete except for connecting to customer inputs/outputs
a
nd it is
desir
a
ble to h
a
ve
a
n
a
l
a
rm-free system,
a
l
a
rm reporting on the incomplete connections c
a
n be dis
a
bled
tempor
a
rily through provisioning. You c
a
n communic
a
te over the hop even if you do not h
a
ve the r
a
dio
connected to customer DS3
a
nd
wa
yside DS1 inputs; ho
w
ever, you
w
ill
a
l
a
rm. On the DS3 F
a
cilities screen,
set
XMT ALARM DISABLE
a
nd
RCV ALARM DISABLE
to
ON
to dis
a
ble DS3
a
l
a
rm reporting on the
wa
yside DS1
F
a
cilities screen, set ALARM Lockout to O
N
to dis
a
ble
a
l
a
rm reporting for
a
ll equipped
wa
yside DS1 lines.
After
a
ll customer connections
a
re complete,
a
l
a
rm reporting c
a
n be restored to norm
a
l.
Содержание MDR-8000
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