FXO/CO (Central Office) Side Unit
The FXO/CO side unit provides the electrical-optical interface between PSTN or PABX 2-wire copper
POTS lines, Ethernet devices or LAN, RS-232/422/485 data devices and the optical fiber cable.
Redundant powering options include 115/240VAC and/or 12VDC, 24VDC, 48VDC local power.
Note:
The DC power terminals are polarity sensitive. Observe the and
terminals on the DC input terminal.
FXS/Sub (Subscriber Side) Side Unit
The FXS/Sub side provides the electrical-optical interface between the copper 2-wire POTS line devices
(phones, fax, modem), Ethernet devices or LAN, RS-232/422/485 devices and the optical fiber cable.
Redundant powering options include 115/240VAC and/or 12VDC, 24VDC, or 48VDC local power.
Note:
The DC power terminals are polarity sensitive. Observe the and
terminals on the DC input terminal.
Note:
FXS/Sub units are electrically different from FXO/CO units and cannot be interchanged. Once all
connections are checked, turn the unit ON using the power switch on the front panel.
Note
: The FXO and FXS units normally take a few minutes to sync with each other during initial setup or
when power is turned OFF then ON.
See your RLH representative for RS-232 to RS-485 converters, power supplies with redundant power and
battery backup, fiber optic cable, patch panels and other accessories compatible with the POTS Mux
System.
Analog Phone & Data Mux System Applications Diagram
Page 4
RLH Industries, Inc. • Tel. 866-DO-FIBER • Fax 714 532-1885 • www.fiberopticlink.com