Viking PA-250 Product Manual page 4

2. FXS (Ring Trip) for Use with an Analog Station
Step 1 Move both back panel slide switches to the FXS (RING TRIP) position.
Step 2 Connect an Analog Station / FXS / or Ringing Line to the PAGE INPUT terminals (pins 5 & 6).
Step 3 Adjust the front panel PAGE trim pot so the PAGE LED flashes with page audio.
Program the Page Time Out, Silence Time Out, Busy Detect, and Return to Dial Tone Detect
Step 4
features to best suit your Telecom Systems's functionality.
NOTE:
1. Connect earth ground to a shield terminal (3,7 or 11) to prevent noise during FXS pages.
2. Dialing "#7" forces the PA-250 to hang up but the #7 touch tones will be heard over the speakers.
3. Paging Port
Step 1 Move both back panel slide switches to the PAGING PORT position.
Step 2 Connect the phone system's Paging Port output to the PAGE INPUT terminals (pins 5 & 6).
Connect the phone system's paging contacts (if available) to the PAGE CONTACT terminals (pins 7
Step 3
& 8).
If paging contacts are not available, the PAGE VOX CONTROL feature must be enabled (enter
Step 4 1#43 in programming). The VOX Silence Time Out feature will end the page after 3 seconds of
silence, but is programmable from 1 - 9 seconds. See Programming section.
Step 5 Adjust the front panel PAGE trim pot so the PAGE LED flashes with page audio.
If the Page Port audio is coming from an RCA jack, and hum or buzz is present in the audio, the
Step 6 RCA cable's shield may need to be grounded on the PA-250 side. This can be done by connecting
the cable's shield to the Ground Terminal (pin 7).
PA-250 Back Panel
MICROPHONE
FXO (LOOP START)
FXS (RING TRIP)
PAGE PORT
1 2 3 4
PROG
+
EARTH FXS FXS
GROUND
PA-250 Back Panel
MICROPHONE
FXO (LOOP START)
FXS (RING TRIP)
PAGE PORT
1 2 3 4
PROG
+
PAGE
PORT
Paging Port
Analog PABX Extension,
Centrex Line or FXS
5 6 7 8
+
5 6 7 8
+
PAGE
PORT
4
Page Contact
(if available)