JK Audio Interchange LTD

Intercom Phone Bridge + Digital Hybrid

• 3 Pin XLR Intercom Loop Jacks
• 16-bit DSP Technology
• Front Panel Cell Phone Interface

Turn Your Phone Line Into a Party-Line.

Interchange LTD allows remote access to your party-line intercom system. This 1RU rackmount interface includes a digital hybrid for connection to analog (POTS) phone lines. The front panel headset interface jack allows easy connection to your wireless phone, tablet, or computer allowing remote access through a phone call or conferencing app. The front panel DTMF keypad and headset jack allow easy call setup.

Features:

• HD Voice compatible (7 kHz wide-band speech)
• Male and female 3-pin XLR intercom loop jacks
• Male XLR mix line out for monitoring
• Send and receive LED metering
• Front panel screwdriver level controls
• Front panel channel select
• Front panel cell phone interface
• Front panel TRRS monitor headset jack with volume control
• Listen always, talk when talk-enabled
• Auto-answer
• 16-bit DSP technology
• Fron panel off-hook LED
• Send and caller signal level LEDs
• DTMF keypad with redial
• Rack mountable 
• Made in America
• Approved for sale in Europe

Listen-Always Design

The Listen-Always design allows both the phone hybrid and the mobile phone headset interface to monitor the intercom just like any other belt pack. Listen mode is a high impedance bridging tap on the intercom line. Talk mode is enabled via a front panel switch, either Off, On, or Auto. Auto follows the phone hybrid Auto-Answer mode.

Digital Hybrid

The internal digital hybrid connects intercom audio to a standard analog telephone line without the transmit/receive crosstalk common to analog hybrids. Its 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.