User's Manual
4-14
Figure 4 - 7 DS1/E1 Facilities Provisioning
LMW-3020
04/04/07
DS1 LINE LENGTH
LINES
INSERT CHANNEL
DROP CHANNEL
LINE CODING
31 2 4
ON
ON
AMI
ON
ON
AMI
OFF
OFF
AMI
OFF
OFF
AMI
75 6
OFF
OFF
AMI
OFF
OFF
AMI
OFF
OFF
AMI
8
OFF
OFF
AMI
Select All
AIS INHIBIT
OFF OFF OFF OFF OFF OFF OFF OFF
LINE
INSERT CHANNEL
DROP CHANNEL
LINE CODING
119 10 12
OFF
OFF
AMI
OFF
OFF
AMI
OFF
OFF
AMI
OFF
OFF
AMI
1513 14
OFF
OFF
AMI
OFF
OFF
AMI
OFF
OFF
AMI
16
OFF
OFF
AMI
Select All
AIS INHIBIT
OFF OFF OFF OFF OFF OFF OFF OFF
AIS SIGNAL
ALL ONES
0-150
SELECT
ALL 1s
OR
ALL 0s
AIS
DATA FORMAT FOR ALL LINES.
SELECT
ON
OR
OFF
. WHEN
SET TO ON,
AIS INSERTION
IS INHIBITED ON SELECTED
DS1/E1.
SELECT
AMI
OR
B8ZS
CODING
FOR EACH DS1 LINE. E1 LINE
CODING IS ALWAYS HDB3.
FOR EACH LINE,
SELECT
ON
TO DROP
LINE OR
OFF
TO
DISABLE LINE AND
ALARMS.
SELECT
ON
TO DROP
ALL LINES OR
OFF
TO
DISABLE ALL LINES
AND ALARMS.
SELECT
ON
TO
INSERT ALL
LINES OR
OFF
TO
DISABLE ALL LINES
AND ALARMS.
SELECT
ON
TO INHIBIT AIS
INSERTION ON ALL LINES.
SELECT
OFF
TO ENABLE
AIS INSERTION ON ALL
LINES.
SELECT
AMI
OR
B8ZS
CODING FOR
ALL DSI LINES
FOR ALL DS1 LINES, SELECT RANGE
THAT MATCHES ACTUAL DISTANCE
TO CROSS-CONNECT
0-150 (TEO OFF),
150-330 (TEO ON), 330-480 (TEO OFF)
OR
480-660 (TEO ON)
FT. FOR E1, NO DIS-
TANCE
IS DISPLAYED.
SELECTING
ON
INSERTS LOCAL DATA AND TURNS ON THE
SELECTED CHANNEL.
SELECTING
OFF
TURNS OFF LOCAL DATA INSERT AND TURNS OFF
LINE INPUT ALARM REPORTING ON THE SELECTED CHANNEL.
SELECTING
NM
INSERTS AN AIS SIGNAL AND TURNS OFF LINE
INPUT ALARMS ON THE SELECTED CHANNEL.
•
ALWAYS SELECT ON WHEN LOCAL DATA IS INSERTED.
•
ALWAYS SELECT OFF AT EITHER A TERMINAL OR A
NON-PROTECTED REPEATER WHEN LOCAL DATA IS NOT
INSERTED.
•
ONLY SELECT NM ON UNUSED CHANNELS AT PROTECTED
REPEATERS.
UNUSED CHANNELS ARE DEFINED AS CHANNELS THAT HAVE
NEITHER LOCALLY INSERTED DATA NOR PASS-THRU DATA ACROSS
THE REPEATER CABLE. SELECT OFF IF LOCAL DATA IS NOT
INSERTED AND THE CHANNEL HAS PASS-THRU DATA ACROSS THE
REPEATER CABLE (NOTE: SELECTING NM IN THIS CASE WILL
CAUSE THE DATA FROM THE REPEATER TO BE OVERWRITTEN
WITH AN AIS SIGNAL PRIOR TO TRANSMISSION).
USING THE REPEATER CABLE TO PASS DS1 DATA ON CHANNELS
5-16 IS NOT RECOMMENDED ON MDR-8000 RADIOS. PASSING THE
DATA THROUGH ON THESE CHANNELS WILL PREVENT
INDEPENDENT SWITCHING BETWEEN THE DS1 I/O AND THE RADIO
TRANSMITTERS. THE DATA SHOULD BE DROPPED AND
REINSERTED AT EACH REPEATER NODE.
Note
The term "LINE" is used to describe an input/output
signal at DS1/E1 rate (1.544 MB/S 2.043 MB/S). The
term "CHANNEL" is used to describe a multiplexed
signal, at a higher rate than DS1/E1. The inserted
channel is output of multiplexer circuit. The dropped
channel is input to demultiplexer circuit. The
multiplexer and demultiplexer circuits are located on
I/O interface module.
Note
If installation at both ends of a hop are complete except for connecting to customer inputs/outputs and it is desirable to have an
alarm-free system, alarm reporting on the incomplete connections can be disabled temporarily through provisioning. You can
communicate over the hop even if you do not have the radio connected to customer DS1 inputs; however, you will alarm unless
you select
OFF
to disable
INSERT CHANNEL
(located on the USI DS1 Facilities screen) for all equipped lines. Disabling the DS1
insert function disables both the lines and alarm reporting for the lines. After all customer connections are complete, alarm
reporting can be restored to normal. To restore alarm reporting to normal, set
INSERT CHANNEL
on DS1 Facilities screen to
ON
.