Specifications

Alarms & Diagnostics
MP2100M-LS-2 Modules - Installation and Operation Manual 3-5
MTLS-2
I/O MODULES
MTLS-2
I/O MODULES
Local Unit
System
Management
Remote Unit
User or
Test
Equipment
Channel 1
Channel 2
.
.
.
.
.
.
.
.
.
.
.
.
MEGAPLEX
System
MEGAPLEX
System
User or
Test
Equipment
Figure 3-3. Remote Channel Loop
External Modem
Loopback
(External Modem
Remote Loop) -
LS-2/M Only
The remote modem loopback is an ITU-T Rec. V.54 loop 2 performed by the
external modem connected to the LS-2/M channel, in response to the command
sent via the internal channel modem. When the loopback is activate, the external
modem returns the receive signal via the transmit path.
The loopback signal path is shown in figure 3-4.
LS-2/M
I/O MODULES
MTLS-2
I/O MODULES
Local Unit
System
Management
Remote Unit
User or
Test
Equipment
.
.
.
.
.
.
.
.
MODEM
Modem
User or
Test
Equipment
MEGAPLEX
System
MEGAPLEX
System
Figure 3-4. External Modem Loopback, Signal Path