*This the maximum distance a door phone can be from the DPIM. The DPIM can be up to 900 cable feet from the
KSU. The total distance must not exceed 1230 feet.
3.5 RINGS AND TONES
3.5.1 RING CYCLES
The OfficeServ 7200 provides the trunk line rings, station rings, door rings, and alarm rings. The ON/OFF cycle of
each ring is shown in the table below (it is different according to the country, and can be modified by MMC pro-
gramming).
Note: The ON/OFF cycle can be adjusted by changing the values of the system database.
3.5.2 RING
The output voltage and frequency of the ring signals in the OfficeServ 7200 are as follows:
•
Output voltage: 75 Vrms Square Wave (Built in SLI)
•
Frequency: 20 or 25 Hz
The OfficeServ 7200 provides the users with various tones to notify the users of the status of functional opera-
tions. The ON/OFF cycles of currently specified tones are shown in the table on the next page.
3.3
3.4 CABLE REQUIREMENTS
EQUIPMENT
CABLE
AWG
MAX FEET
MAX METERS
DIGITAL KEYSET
1 PR. TWISTED
24
1300
400
ADD-ON MODULE
1 PR. TWISTED
24
1300
400
SINGLE LINE STATION
1 PR. TWISTED
24
3000
1 KM
DOOR PHONE
2 PR. TWISTED
24
330*
100
3.5.1a SYSTEM RING CYCLES
RING
ON/OFF CYCLE
TRUNK LINE RING
1000/2000 ms
STATION RING
400/200/400/3000 ms
DOOR RING
400/200/400/200/400/2000 ms
ALARM RING
400/200/400/200/400/200/400/1000 ms
