Universal Host VoIP/PBX Digital Hybrid

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Universal Host VoIP/PBX Digital Hybrid


The Digital Hybrid for a Busy Desktop.

Universal Host easily converts your IP or PBX telephone into a professional, affordable interview station. This desktop digital hybrid provides talk show quality caller audio from most telephone systems. Simply connect between your telephone handset and the base of your telephone. The digital hybrid connects audio signals to your IP or PBX type telephone system through the telephone handset cord. Universal Host provides connections for a microphone, headphones, mixer, sound card, and telephone handset. The stereo output jack on the back of the unit provides your voice on one channel and only the caller’s voice on the other channel. The balanced XLR output jack contains only the caller’s voice. The Handset and Online buttons select between talking on the handset, or sending and receiving through the audio connections. A second switch selects between monitoring the caller or listening to the USB codec over the headphones.


Digital Signal Processor

The digital hybrid connects audio signals to a standard analog telephone line without the transmit / receive crosstalk common to analog hybrids. The Digital Signal Processor (DSP) continuously monitors both the phone line and audio signals to deliver excellent separation. This proprietary, dual-convergence echo canceller algorithm can achieve excellent separation, typically exceeding 50 dB, without any setup and without sending a noise burst down the line.

Talk Show Quality Interviews

Connect a professional dynamic mic and headphones to Universal Host to capture your voice in full audio bandwidth, while maintaining excellent separation between your voice and the caller.

Conference Rooms

Easily connect your PA system to the existing IP or PBX telephone system. The echo canceller algorithm prevents feedback and allow full duplex conversations.


The 16 bit USB audio CODEC allows stereo recording at up to 48 kHz sampling rate, with the talent voice on the left channel in full bandwidth, and the caller on the right. Play recordings from your computer directly into the phone system.




Comparisoninnkeeper PBXUniversal Host
Excellent Separation of Caller and Talent Voice
16-bit DSP technology
16-bit USB Audio CODEC -
Proprietary Auto Null Algorithm (50 dB null)
Send XLR Line Input
Mic/Line Switch
3.5 mm Mono Line Input
Caller XLR Line Output
3.5 mm Stereo Line Output
3.5 mm Stereo Headphone Jack
Send and Caller Signal Level LEDs
Send and Caller Volume Controls
Handset Selector Switch
(Electret, Carbon, Dynamic)
Made in America
Approved for Sale in Europe and Australia



Send 1Balanced Female XLR
Impedance1k ohms
Level15 mV RMS (-34 dBu nom)
Mic/Line Pad Switch+6 dBu max
Send 21/8" (3.5mm) Mono
Impedance20k ohms
Level250 mV RMS (-10 dBu nom)
Caller OutBalanced Male XLR
Impedance200 ohms
Level500 mV RMS (-4 dBu nom, +14 dBu max)
Caller Only
Stereo Out1/8" (3.5mm)
Impedance50 ohms
Level250 mV RMS (-10 dBu nom, +6 dBu max)
Left = Send, Right = Caller
Headphone1/8" (3.5mm)
Impedance8 ohms
Level250 mW
ConnectorMini Type B Female
Sampling Rate32 kHz, 44.1 kHz, 48 kHz
Handset and Telephone ConnectorsRJ22
Isolation1500 VAC
Frquency ResponseTelephone Side 200 Hz-3600 Hz
Power120-240 VAC Power Supply
Size7" x 6" x 1.6" (18 x 15 x 4.2 cm)
Weight2.2 lbs. (1kg)