Specifications

Introduction
1-10 MP2100M-LS-2 Modules - Installation and Operation Manual
Management and
Diagnostics
Channel data rates, as well as all the operating parameters are controlled by the
system management.
Self-diagnostics upon power-up, as well as powerful testing capabilities
controlled by the system management, reduce downtime to a minimum.
The diagnostics functions available on the LS-2 modules are as follows:
• Activation of a local or remote test loopback on the desired module
channel. The module also supports local and remote digital loopbacks on
the module composite (internal port 1 of the MEGAPLEX system) data
stream, activated by commands from system management.
• For the LS-2/M module only: external modem loopback similar to ITU-T
Rec. V.54 loop 2, activated on the external modem by commands from
system management, and local loopback activated on the internal channel
modem upon request of the external modem.
For convenience, the MEGAPLEX system enables the user to specify the time a
loopback remains active: the range is 1 through 30 minutes, in 1-minute steps.
After the specified time, the loopback is automatically deactivated by the
module, thereby reducing the management workload during system
troubleshooting. The default selection is continuous connection, that is, the
loopback remain active until canceled by a user's command.
In addition to the loopbacks listed above, the module panels includes indicators
for the synchronization status of the module, and for the LS-2/M module, CD
(carrier detect) and test indicators for each channel.