T1 AND E1 FIBER MUXES
18
Table 3-2. Jumpers on MT1000A-85-E1 and MT1000A-13-E1.
Jumper
Description
Values
Factory Setting
JP23
Controls the operation of the alarms,
JP23-1 sets Channel 1;
ON
Channel
whether they are ignored or processed.
JP23-2 sets Channel 2;
Alarms
JP23-3 sets Channel 3;
JP23-4 sets Channel 4.
OFF: The alarms generated by the
corresponding channel are ignored, and no
indication is generated in case of an alarm
condition on that channel.
ON: The alarms generated by the
corresponding channel are processed.
JP26
Controls the operation of the voice
OFF: The service channel is disabled.
ON
Service
service channel.
Always use this setting when an optional
Channel
electrical E2 interface is installed.
ON: The service channel is enabled. This is
the factory-default setting when the fiber
optic interface is installed.
SW1-1
Controls the downloading of an
OFF: The V-Agent is set to FLASH and
OFF
V-Agent
updated version of the FLASH memory
downloading of a new version is possible.
when a malfunction occurs in the
ON: The V-Agent is set to default version.
normal download process. (See
Chapter 5
for more information.)
SW1-2, 3, Not in use.
Not in use.
—
4 V-Agent
After completing the internal settings, replace the mux’s cover. To do this:
1. Position the lower half of the mux’s case on a flat, clean surface. Check that the decorative black plastic strips
on the sides of the unit are still in place. (If not, place the strips in the grooves on the sides of the lower half.)
2. Identify the cover’s front and rear, and position the cover on the lower half of the mux so that the cover
guides are located just above the holes in the lower half. Close the cover and ensure that the protruding tips
of the cover guides enter the corresponding recesses in the lower half.
3. Hold the cover in place and turn the assembled mux over to gain access to the bottom half of the unit.
4. Insert the original cover screws in their positions and tighten carefully.
Do not use excessive force!