JK Audio - AutoHybrid Telephone Audio Interface
AutoHybrid gives you simultaneous send and receive audio through analog telephone lines. Not just another half duplex auto-coupler, this is a full duplex AutoHybrid. Yes, you can send and receive audio at the same time. The dual transformer hybrid is capable of 20 dB nominal trans-hybrid loss. In other words, your transmit signal will appear mixed with the receive signal, but at a level 20 dB lower than it was sent into the phone line. The "Auto" feature is very simple. When the "Auto" switch is selected, AutoHybrid will answer on the first ring. The phone line will remain off-hook, until either the Drop button is depressed, or until the phone company releases the line. Keep in mind that some business PBX telephone systems do not provide this release signal. This is a simple, passive, auto-answer/disconnect telephone line interface. While this may be our smallest hybrid yet, it contains all the features you need for many simple applications. AutoHybrid is perfect for monitoring remote locations, IFB feeds, and many simple studio, conferencing, and PA telephone interface applications. This small desktop unit easily converts to a rack-mount unit using the optional RA4 Rack Panel. The RA4 holds four AutoHybrids in a 1U rack space.

JK Audio - Broadcast Host Desktop Digital Hybrid
Broadcast Host turns your desktop into a professional broadcast center. Contains everything you need to get talk show quality phone recordings into your mixer or sound card. Connect a mic and headphones for a simple broadcast back to the station. Already at the station? Use Broadcast Host in your newsroom to record high quality interviews. Broadcast Host allows you to send mic and line level signals into the phone line while maintaining excellent separation between your voice and the caller. 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 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. Broadcast Host provides connections for a microphone, headphones, mixer, sound card, telephone and your analog telephone line. An auxiliary telephone is only required to place outgoing calls. The auxiliary telephone is disconnected when you press the “Call” button, and reconnected when you press the “Drop” button. Broadcast Host features Auto-Answer/Auto Disconnect for use in IFB and monitoring applications. Other applications include: telephone interviews, talk shows, church PA interface, and conference room full duplex applications.

JK Audio - innkeeper PBX Desktop Digital Hybrid
Innkeeper PBX easily converts your multi-line PBX type telephone system into a professional, affordable talk show console. Simply connect between your telephone handset and the phone base. So simple, anyone can do it. Talk Show: Connect Innkeeper PBX between your console and your existing multi-line telephone. Your producer can screen callers from another phone while you take callers on the air by simply selecting available lines on your phone. Interviews: Use Innkeeper PBX in your newsroom to record high quality interviews. Connect a mic and headphones to your PBX telephone while maintaining excellent separation between your voice and the caller.
Conference Room: Easily connect your PA system to the existing PBX telephone system. The echo canceller algorithm can prevent feedback and allow full duplex conversations. The digital hybrid connects audio signals to your PBX type telephone system through the telephone handset cord. The Digital Signal Processor (DSP) continuously monitors both transmit and receive audio signals to deliver excellent separation. This proprietary, dual-convergence echo canceller algorithm can achieve excellent separation without any setup, and without sending a noise burst down the line. Innkeeper PBX 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 Broadcast buttons select between talking on the handset, or sending and receiving through the audio connections.

JK Audio - Cell Tap Wireless Phone Audio Tap
Need to record your cell conversations?
Connect CellTap between the 2.5 mm earpiece jack of your cell phone and your earpiece or headset. Now connect a tape recorder or powered speakers to the 3.5 mm mini jack. This audio output contains a nice mix of both sides of the conversation. CellTap works with any wireless phone that accepts a third party headset or earpiece. Group Listen - Simply connect a powered speaker to the audio output jack and you will have a new conferencing capability. Everyone in the room can hear your conversation, but only the person wearing the headset can talk to the distant party. While this is not a speakerphone, in many cases it more suitable for sales presentations or contract talks. CellTap must be used with an earpiece or headset. Your cell phone will not recognize CellTap on its own.

JK Audio - innkeeper 1Digital Hybrid
The innkeeper 1 gets audio in and out of telephone lines. Its excellent caller audio does not exhibit the transmit / receive crosstalk common to analog hybrids, making it perfect for radio or television talk shows, teleconferencing, or auto-answer IFB feeds. A digital hybrid such as the innkeeper 1 connects audio signals to a standard analog telephone line without the variations in quality found with analog hybrids. The main function of a hybrid is to bring in the caller’s phone line, as clear and clean as possible. In the real world, when you send your voice down the telephone line it will bleed over into the caller’s audio, so the hybrid must adapt to the phone line in order to properly separate transmit and receive audio. We use a 16 bit DSP to monitor the phone line and audio signals continuously in order to deliver excellent separation. Our dual - convergence algorithm can achieve excellent trans - hybrid loss typically exceeding 50 dB, without any setup. This wouldn’t be a JK Audio product without its fill of common-sense features. Check out the front-panel headphone jack and volume control. You can monitor either the send signal, the caller’s voice, or a mix of the two. This output is also sent to the rear panel screw terminals so you can easily add a monitor speaker. As a matter of fact, all of the remote features can be found on real screw terminals for ease of installation. And, of course, the audio connections: mic/line switchable XLR input, XLR caller output and an additional, user-defined XLR output. Now press the "Presence" button and you’ll get a richer sound from the caller’s voice. This digital filter brings back some of the low-end lost in transmission. And possibly the coolest feature: The Innkeeper 1 can be controlled by the Guest Module 1, the optional remote control keypad.

JK Audio - QuickTap Telephone Handset Tap
Connect the QuickTap between your telephone and handset for quick access to audio from any telephone. Simply unplug the handset coily cord from the base of your telephone and plug it directly into the QuickTap. Then, using the supplied cable, connect the QuickTap to the base of the telephone. Now connect your audio equipment or powered speaker to the audio output jack. This jack contains a nice mix of both sides of the conversation, as well as the tones being pressed on the keypad. The QuickTap does not work with cellular telephones or any telephone with a keypad in the handset.

JK Audio - TAP-1 Telephone Audio & Power Interface
The Tap-1 is a phone line simulator for simple audio applications, that powers an analog telephone with the required -48 volts DC and separates audio into transmit and receive audio paths. The TAP-1 acts like an RJ-11 wall jack in your home. You may not know it but the telephone company sends power down into your wall jack, and you use it to power your phone. This power is sent over the two wires call Tip and Ring. These two wires form a balanced, two way voice path which can be sent miles with minimal noise and signal loss. This two wire interface can be a burden if you just want to get audio in and out of a telephone without connection to the telephone company. The TAP-1 provides the Tip / Ring interface and -48 volt supply and then separates audio into transmit and receive. This is called a 2-wire to 4-wire hybrid. The bottom line... TAP-1 can be used on TV or film studio sets where a telephone or cordless telephone is used on set and you want to get audio into and out of the telephone. You can also use TAP-1 to test telephones, voice coding algorithms, or phone line equipment. TAP-1 is built to very high specs for laboratory testing use.
Internet Telephone?
You can also use TAP-1 to power a cordless telephone and connect the audio paths to a sound card for use as an internet telephone. Imagine roaming the house as you talk over the internet.

JK Audio - THAT-2 Telephone Handset Audio Tap
Connect THAT-2 between your telephone and handset for quick access to audio in and out of the telephone. The THAT-2 is used by radio stations to record and play sound bytes, and by TV and film sound crews to get IFB dialog over phone lines. The THAT-2 is the big brother of our model THAT-1, which is very popular with news reporters for its small yet rugged design. Over the years we’ve heard from many of our customers that they liked the THAT-1 but would prefer professional XLR jacks and compatibility with more telephone systems. Here is the answer... The THAT-2, a passive handset interface with professional and consumer jacks, separate input and output volume control, a selector switch for the different types of telephone systems, and still no batteries or AC needed. Simply unplug the handset coily cord form the base of your telephone and plug it directly into the THAT-2. Then, using the supplied cable, connect the THAT-2 back to the telephone. Now connect your audio equipment or powered speaker to the RCA or XLR jacks. The grey pushbutton selects which audio will be sent into the telephone (OUT = talking on the handset, IN = sending audio in through the RCA jack). The output jacks contains a nice mix of the audio from both sides of the conversation, as well as the tones being pressed on the keypad. The THAT-2 has a three-position switch which accommodates electret, dynamic and carbon telephone handset microphone types. The THAT-2 will emulate the type of microphone that is in the handset and allow you to send audio into many different types of analog and digital PBX sets, as well as ISDN telephones. The THAT-1 does not work with cellular telephones or any telephone with a keypad in the handset.

JK Audio - THAT-1 Telephone Handset Audio Tap
Connect THAT-1 between your telephone and handset for quick access to audio in and out of the telephone. The THAT-1 is used by radio stations to record and play sound bytes, and by computer and telephone companies to demonstrate their computer voice services using a powered speaker. Simply unplug the handset coily cord form the base of your telephone and plug it directly into the THAT-1. Then, using the supplied cable, connect the THAT-1 back to the telephone. Now connect your audio equipment or powered speaker using the RCA jacks. The grey pushbutton selects which audio will be sent into the telephone (OUT = talking on the handset, IN = sending audio in through the RCA jack). The output RCA jack contains a nice mix of the audio from both sides of the conversation, as well as the tones being pressed on the keypad. The volume control adjusts the volume of the signal going to your powered speaker or tape recorder. The THAT-1 will work with many different types of analog and digital PBX and ISDN telephones. The receive side of the THAT-1 (audio From Phone), will work on any telephone. To send audio into the telephone (To Phone), the telephone must have an electret type microphone in the handset. If your telephone has a round mouthpiece or if you intend to use theis product on many telephones, you should consider our model THAT-2, which is compatible with more telephone systems. The THAT-1 does not work with cellular telephones or any telephone with a keypad in the handset.

PSC Phone Tap
The Professional Sound Corporation Phone Tap has been designed to be used by the radio, television and film industries as an interface for recording audio from a standard telephone line. This device can be connected to virtually any standard telephone line via the supplied cables and adapters. The PSC Phone Tap, once connected, will emulate a standard telephone. When that telephone line is called, a red "ring" LED will flash. The operator of the PSC Phone Tap then flips the switch to "on" and the line will be seized just as a normal phone would do. The red "ring" LED will stop flashing and the green "seize" LED will light indicating that the line has been seized. Audio received over the phone line is then available on the output XLR for recording purposes.

Two sides of a conversation can also be recorded if a standard telephone is connected in parallel with the PSC Phone Tap. A dual phone jack is provided to allow this configuration. The PSC Phone Tap is supplied with several cables and adapters to allow connection to any standard telephone line. This device is completely line-powered and the audio output is transformer-isolated from the phone line. This device adheres to part 15 of the FCC regulations. Licensing is the responsibility of the owner/user.

Telos ONE
Telos ONE present superb digital telephone hybrid performance for broadcast, teleconferencing, and communications applications. Proven Telos processing technologies perform all hybrid functions, gain control, and filtering completely in the digital domain. The use of intelligent software, rather than complex hardware, makes the Telos ONE very affordable while ensuring consistently superior performance regardless of telephone line characteristics The Telos ONE comes in three versions: A single hybrid, available in either a compact modem case (Model 120) or standard rack mount chassis (Model 125), and the ONE+ONE, a dual hybrid with a built-in mix-minus matrix. With the exception of the power supply, the rack mounting and modem case versions of the Telos ONE are electronically identical.

Telos Link
The Telos Link solves the problem of interconnecting production intercom systems with dial-up telephone lines. Anyone with access to a telephone, even a cellular phone, can instantly and automatically be connected with your intercom. Digital auto-nulling hybrids on both the telephone and intercom audio paths allows connections to be made without the usual gain and feedback problems, while maintaining natural, full-duplex operation. The result is significantly improved communication capability.