Chapter 4: Supplementary applications
66 P/N 3101890-EN • REV 006 • ISS 21JUN18
Should a second alarm from another location be received, the evacuation message playing as a result of the first
alarm may not be appropriate for the second alarm.
Note: In the event of conflicting messaging instructions caused by multiple alarm events, the system will play the
default evacuation message whenever two or more different messages are requested at the same time on the
evacuation channel. By reverting back to the generic default evacuation message in multiple alarm location
scenarios, no one can be misdirected by the wrong message. Default messages also play during alarms when no
location specific message has been requested.
Firefighter phone
The VM-MFK contains a master telephone handset that provides an analog telephone riser for totally independent
two-way communications between the fire command station and firefighter telephone stations/jack telephones
installed at strategic locations throughout the protected facility.
Taking a telephone off-hook or plugging it into a telephone jack generates a visual and audible incoming call
signal at the fire command station. The individual originating the call hears a tone until the handset is connected
to the system. The fire command station operator manually connects the incoming phone call to the phone riser to
complete the call. The operator can also use the telephone circuit as a page source, permitting paging via the
telephone system.
See the VM-MFK Master Firefighter Telephone Kit Installation Sheet (P/N 3101790-EN) for wiring and technical
specifications.
Five phone off-hook limit
The circuitry on the VM-MFK Firefighter Telephone controller card can support up to five telephones off-hook in
addition to the master handset at the VM-PMI at any one time. The flexibility of the VM-1 system permits any
number of phones to be wired on a single phone circuit, as long as they are not all used simultaneously. There
are a number of different designs that can be used to insure that no more than five phones are active at any one
time.
One phone per circuit
The advantages of installing a single firefighter phone station or jack on a GSA-CC1 module (personality code 6)
are numerous. The system provides complete control and annunciation phone/circuit. Installing a single phone on
a circuit permits the operator to immediately identify the exact location of the calling party. Because the VM-MFK
will only permit five circuits to be connected simultaneously, the maximum number of off-hook handsets can never
be exceeded. Should a branch telephone circuit be damaged during a fire, the fault will not affect other phone
circuits. When there is only one phone per circuit, troubleshooting of faults is simplified.
Testing the audio system integrity
Activate prerecorded audio messages stored in the VM-PMI to test the integrity of the digital audio system.
To test the audio system integrity:
1. Access the Main Menu, and then select Activate.
2. Select Audio Message, and then enter the panel, card, device, and channel addresses.
3. Enter your access level password.
4. When finished, access the Main Menu, and then select Restore.
5. Select Audio Message, and then enter the panel, card, device, and channel addresses.
6. If required, enter your access level password.
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