GAI-Tronics MS05-101 Desktop Master Station consisting of Subset, Amplifier and Enclosure - Manual (Page 7)

Pub. MS05-101iom.2
Model MS05-101 Desktop Master Station Page: 7 of 11
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Communication on Party Line 1
The master station can selectively communicate with field stations in each zone, or with other master
stations. To communicate with a field station:
1. Lift the handset and select party line 1 on the P ARTY L INE rotary selector switch.
2. Select the desired Z ONE S ELECT push button (1 through 5 or ALL). This could be a single zone, a
group of zones, or all zones. The green LED indicator(s) above the selected zone(s) illuminates.
3. Press the MERGE push button. Two-way communication with handsets stations in the selected zones
is now available.
4. When conversation is complete, press the Z ONE S ELECT RESET push button.
The zone switches are not needed to communicate with other master stations. Simply lift the handset and
select party line 1 on the P
ARTY L INE selector switch. Two-way communication with other master stations
is now available.
Communication on Party Lines 2 through 5
Communication between the Model MS05-101 Master Station and field stations is not available unless
each zone’s party lines 2 through 5 and the master station party lines 2 through 5 are configured as
“common.” This is accomplished by jumper settings on the Termination PCBA inside the merge/isolate
cabinet. Jumpers are provided for party lines 2 through 5 in each zone and for the master station party
lines. Refer to the Installation section of the merge/isolate cabinet manual for jumper setting details.
Assuming the party lines are set to common, communicate on party lines 2 through 5 from the master
station to field stations as follows:
Lift the master station handset and select a party line (2 through 5) on the P ARTY L INE selector switch.
Two-way communication with other master stations and handsets stations in zones 1 through 5 is now
available.
Paging to Other Master Stations
To generate a page to other master stations, lift the handset, press the handset pressbar, and speak directly
into the microphone. The page message is broadcast from speakers at all the other master stations. If
two-way, party line (full duplex) communication is desired, release the handset pressbar to connect to the
selected party line.