Chapter 5. Peripheral Equipment
Section 300-Installation
5-10 DBS Manual - Revised April 2000 DBS-2.3/9.2-300
Off-Premises Adaptor (OPX)
Guidelines
• Analog phones can be connected as off-premise stations through a direct
line to the DBS or through the central office, depending on how far the
stations are from the OPX Adaptor.
Table 5-4 shows how far the OPX stations can be from the adaptor without
going through a CO.
Table 5-4. Maximum distances for direct connection to OPX stations
• One OPX Adaptor (VB-43702) is required for each OPX station.
• The ringing output of the OPX Adaptor is 225 Vp-p (peak-to-peak) at 20
Hz.
• When OPX stations are connected through the central office, an external
ringer supply may be required. If required, the ringing supply is connected
to the OPX Adaptor.
• Order an OL13C circuits for OPX stations connected through a CO.
• The following tools are required to install the OPX Adaptor:
- Phillips screwdriver
- Needle-nose pliers
- Diagonal shears.
Wiring
gauge
Max. distance (in feet) between
the OPX Adaptor and the OPX
station
AWG 22 27877
AWG 24 17532
AWG 26 11025
