NMX-ATC-N4321 Audio Transceiver

Audio over IP Transceiver

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The NMX-ATC-N4321 Audio Transceiver is an audio-over-IP solution that both sends and receives two-channel balanced or unbalanced audio over IP. Simply connect a balanced audio input into the IN port and it's converted to IP packets that are switchable and routable just like data or voice. The balanced audio output receives an audio-over-IP stream and decodes to analog while preserving audio fidelity. Perfect for point-to-point or point-to-multi-point audio delivery, the NMX-ATC-N4321 provides audio matrix switching and distribution using the same control options as SVSI's Networked AV video switching and distribution solution.

With two auto-sensing gigabit Ethernet ports, units can be stacked to deliver low-latency multi-channel audio over a house network or a physically separate network. One Ethernet port is POE for use with a POE switch, eliminating the need for an external power supply. An audio matrix with any number of inputs and outputs can be constructed with the NMX-ATC-N4321. Since control is the same as for SVSI's video over IP matrix, video and audio matrices can be combined and routed using the same controller for the ultimate in digital media distribution.


  Version Language Size Uploaded
Data Sheet
updated: Dec 01, 2016
    489 KB Dec 01, 2016
Direct Control API - NMX-ATC-N4321 Audio over IP Transceiver
updated: Jul 16, 2018
    250 KB Jul 16, 2018
NetLinx Control for N-Series Products Documentation Addendum
updated: Jul 16, 2018
    1.05 MB Jul 16, 2018
Bim Objects
NMX-ATC-N4321 - BIM Object
updated: Aug 12, 2019
    Aug 12, 2019
SVSI N4000 Audio over IP Transceiver Firmware Updater
version 01.00.00c, updated: Jul 16, 2018
01.00.00c     25.4 MB Jul 16, 2018
Quick Start Guides
Quick Start Guide - NMX-ATC-N4321 Audio over IP Transceiver
updated: Mar 26, 2018
    638 KB Mar 26, 2018
Install Guides
SVSI Networked AV - Pre-Implementation Guide
updated: Mar 29, 2018
    607 KB Mar 29, 2018
Product Guides
Product Guide - N-Series Minimum Network Requirement
updated: Apr 12, 2018
    88.8 KB Apr 12, 2018
SVSI Stream Compatibility Guide System Design Guidelines
updated: Apr 25, 2018
    121 KB Apr 25, 2018

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Dimensions (HWD) 1.05" x 7.888" x 5" (2.67 cm x 20.04 cm x 12.7 cm)
Audio Inputs 2-channel user selectable balanced or unbalanced audio
Audio Outputs 2-channel balanced audio (1x 5-pin phoenix connector), 2-channel unbalanced audio (headphone jack)
Communications Ethernet: Multi-cast, unicast, IGMP v3, IPv6, layer-2 and layer-3 switch compatible.
Front Panel Components Reset button, ID button, Power LED, Status LED. See Data Sheet for details.
Rear Panel Components 12 Volt DC power input; POE, 8-wire RJ45 female; 10/100/1000 Mbps 10/100/1000Base-T auto-sensing gigabit Ethernet switch port. See Data Sheet for details.
FG Numbers FGN4321-SA

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