5
X
RS-232,485 + 2
X
E
THERNET
/2 M
BIT
/
S
G.703 (G.704) M
ULTIPLEXER
O
PERATING
M
ANUAL
IOA81-1E
29
August 2004
5.4 Selection of operating modes for channels
Drop&
Continue
Drop
C
C
1
7
4
5
6
7
8
1
2
3
ON
MODE OF OPERATION
TM-81
MULTIPLEXER 7x64k/2M
T R I B U T A R Y C H A N N E L C O N F I G U R A T I O N
B
A
AIS
10
-3
LOF
LOS
G.703
CONFIGURATION
B
A
Droop
LNK
RCV
LNK
RCV
C
C
C
C
C
C
C
LP
C
C
C
TS
C
1
1
1
3
4
5
7
7
7
6
2
CHANNEL DIRECTION
10BASE-T
MODE OF OPERATION
4 5 6 7 8
1 2 3
ON
4 5 6 7 8
1 2 3
ON
4
1 2 3
ON
4 5 6 7 8
1 2 3
ON
4 5 6 7 8
1 2 3
ON
4 5 6 7 8
1 2 3
ON
4 5 6 7 8
1 2 3
ON
4 5 6 7 8
1 2 3
ON
4 5 6 7 8
1 2 3
ON
9 10
RS232/485
Continue
Droop &
Operating mode for channels is selectable by MODE OF OPERATION switches as follows:
4 5 6 7 8
1 2 3
ON
Upper position of switch corresponding to given channel means selection of
the mode with interrupted transmission path (DROP mode) for this channel.
4 5 6 7 8
1 2 3
ON
Lower position of switch corresponding to a given channel means selection of
the mode without interrupting the transmission path (DROP & CONTINUE
mode) for this channel. The DROP mode is recommended for most applica-
tions for C
6
and C
7
Ethernet channels.
5.5 Selection of operating mode for the unit
TS
LP
4
5
6
7
8
1
2
3
ON
CONFIGURATION
TM-81
MULTIPLEXER 7x64k/2M
T R I B U T A R Y C H A N N E L C O N F I G U R A T I O N
B
A
AIS
10
-3
LOF
LOS
G.703
CONFIGURATION
B
A
Droop
LNK
RCV
LNK
RCV
C
C
C
C
C
C
C
LP
C
C
C
TS
C
1
1
1
3
4
5
7
7
7
6
2
CHANNEL DIRECTION
10BASE-T
MODE OF OPERATION
4 5 6 7 8
1 2 3
ON
4 5 6 7 8
1 2 3
ON
4
1 2 3
ON
4 5 6 7 8
1 2 3
ON
4 5 6 7 8
1 2 3
ON
4 5 6 7 8
1 2 3
ON
4 5 6 7 8
1 2 3
ON
4 5 6 7 8
1 2 3
ON
4 5 6 7 8
1 2 3
ON
9 10
RS232/485
Continue
Droop &
Operating mode of the TM-81 multiplexer is selectable by CONFIGURATION switches (sec-
tors 6, 7, and 10):
Normal operation, both A and B ports available.
The multiplexer works as terminal device, only B port available. Clock signal
from internal quartz generator.
