Description
Tired of phones that barely ring—or go silent entirely—when a call comes in? The Viking RG-10A ring booster solves that problem instantly by amplifying your existing analog line signal to ring up to 12 standard telephones at once.
This compact plug-and-play device connects directly to any telephone line, PABX extension, FXS port, or analog port on a VoIP adapter and duplicates the incoming ring frequency and cadence exactly as received. That means custom ringing patterns, Caller ID, and call waiting all continue to work without interruption. It also reshapes problematic square-wave ring signals into a clean saw-tooth wave and offers an optional 20VDC talk battery boost for weak or low-current lines—making it just as useful for troubleshooting poor line quality as it is for expanding capacity.
Whether you're adding phones to a growing office, wiring up a large home setup, or driving multiple handsets from a single analog VoIP adapter, the RG-10A is a straightforward, affordable fix. Multiple units can even be combined for higher capacity when your setup demands it.
Our Expert Take: The RG-10A hits the sweet spot for most small-to-medium phone setups where ringing is weak or simply not reaching enough devices. The saw-tooth wave reshaping feature is a genuine bonus if you're running phones off a VoIP ATA or older PABX that outputs a non-standard ring signal. If you need to support multiple lines at once, take a look at the RG-204, and for very large or rack-mounted deployments, Viking's rack-mount ring booster options are worth considering.
Key Features
- Boosts ringing capacity to 12 REN — powers up to twelve standard 1 REN telephones simultaneously
- Duplicates incoming ring frequency and cadence exactly for full compatibility with custom and distinctive ringing patterns
- Caller ID and call waiting pass through completely unchanged
- Reshapes square-wave ringing signals into a clean saw-tooth wave for improved compatibility
- Optional 20VDC talk battery boost improves loop current and audio quality on weak lines
- Easy plug-and-play installation via two RJ11 connectors — no tools or configuration required
- Does not interfere with normal telephone line operation
- Multiple units can be combined for even greater ringing capacity
- Compact footprint: 5″ × 5″ × 1.5″
- Made in the USA with a 2-year warranty
Technical Specifications
- Power: 120VAC / 13.8VAC 1.25A UL listed adapter (included)
- Incoming Ring Detection: 40–150VAC
- Ring Generator Output: 90VAC nominal, 40VAC @ 12 REN
- Ring Wave Shape: Saw tooth
- Optional Talk Battery Boost: 20VDC
- Connections: (1) RJ11 plug (LINE IN), (1) RJ11 jack (OUT TO PHONES)
- Dimensions: 5″ × 5″ × 1.5″ (127mm × 127mm × 38mm)
- Operating Temperature: 32°F to 90°F (0°C to 32°C)
- Humidity: 5% to 95% non-condensing
- Shipping Weight: 2.8 lbs (1.2 kg)
- Certifications: FCC Part 68, FCC Part 15
- Warranty: 2 years (Made in the USA)