What You Need
• RCVx3
device • Backup battery •
Power adapter
• \RJ-11 phone
cable • (Optional) Ethernet cable
Connect & Power On
1. Place the backup battery
near the RCVx3 on a stable
surface.
2. Plug the AC adapter
into a wall outlet and into the battery’s INPUT.
3. Connect the battery’s 12V DC OUTPUT to the RCVx3 Power port (DC IN).
4. Move the battery’s power switch to ON. The battery LED should be solid.
5. Wait
~30 seconds for the RCVx3 Power LED to turn solid.
6. Connect the RJ 11 phone cable from FXS1 on the RCVx3 to
your phone/call box.
7. (Optional) If your setup requires network,
connect Ethernet to your LAN.
Verify Service
• Allow 1–2
minutes for network registration.
• Place
a normal outbound call and confirm two-way audio.
Quick Troubleshooting
- No power:
Ensure the battery is charged/on and the DC plug is fully seated.
- No dial tone: Confirm
the RJ 11 is connected to FXS1 and try a known good
cable.
Connections Overview

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