User guide

Prior to installation
• Check for shipping damage
• Check the contents to ensure correct model and powering options
• Make sure you have the correct fiber type and power available
• Have a clean, dry installation environment ready
• Observe anti-static precautions
Required for installation:
• Suitable RLH card housing for the Fiber Link Card
• 24-48VDC power supply
FXO/CO (Central Office) Side Unit
The FXO/CO side unit provides the electrical-optical interface between PSTN or PABX 2-wire copper
analog phone lines, Ethernet devices or LAN, and the optical fiber cable.
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, and the optical fiber cable.
Note: FXS/Sub units are electrically different from FXO/CO units and cannot be interchanged.
When using the ringdown circuit, the FXS/Sub module is used at each end of the network.
Install into Card Housing
Install the Fiber Link Card into the desired RLH card housing by depressing the card retainer slightly while
sliding the card into the guide rails. Contact your RLH representative about card housing options.
Installation into RLH Fiber Link Card Housing
! RLH Industries, Inc. • Tel. 866-DO-FIBER • Fax [phone] • www.fiberopticlink.com! Page 5