JK Audio INTCHGLTD Interchange LTD Intercom Phone Bridge + Digital Hybrid 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 r computer allowing remote access through a phone call or conferencing app. The front panel DTMF keypad and headset jack allow easy call setup. 3 Pin XLR Intercom Loop Jacks 16-bit DSP Technology Front Panel Cell Phone Interface.

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.

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.

Specifications:
Intercom Channel: Male & Female 3-pin XLR
Output Level: -10 dBu (250 mV RMS) nominal
Terminating Impedance: 200 ohms
Bridging Impedance: >15k ohms
Pin 1: Common
Pin 2: Audio + 30 VDC ( +12 VDC min ) 50 mA
Pin 3: Audio

Line Out: Balanced Male XLR
Impedance: 200 ohms
Level: 500 mV RMS (-4 dBu nom, +12 dBu max)

Headset Interface
Connection: 3.5 mm TRRS
Frequency Response: Wireless Interface 50 Hz – 7 kHz (HD Voice)

Phone Line: RJ11C
Aux Phone: RJ11C
Ringer: 0.8B REN
Isolation: 1500 VAC
Frequency Response: Telephone Side 200 Hz-3600 Hz
Monitor Headset Jack: 3.5 mm TRRS
Power: 120-240 VAC Power Supply (included)
Size: 19” x 5.4” x 1.75”
Weight: 5.2 lbs