Transport of the MPX FM composite signal over IP networks
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IQOYA X/LINK-MPX – Transport of the MPX FM composite signal over IP networks

IQOYA X/LINK-MPX is a 1U rack IP codec designed for the transport of an FM/MPX composite signal over IP networks. It can be used as an IP MPX encoder, or as an IP MPX decoder. At the studio, the MPX input signal can be analog or digital AES192. At the transmitter site, the MPX output signal is available via two analog outputs and one digital AES192 output, which allows for using redundant exciters.  The MPX signal can be transported in uncompressed PCM, or compressed in microMPX for using network links with low available bitrate.


X/LINK-MPX includes a rich set of features dedicated to the reliable transport of the MPX signal over managed or unmanaged networks, and also ensures continuity of audio service on transmitter sites thanks to two backup levels. Built on a powerful, fan-less and energy-efficient hardware platform that runs the acclaimed Digigram Fluid IP streaming technology, IQOYA X/LINK-MPX is the IP codec designed for 24/7/365 operation.

Key Points

Transport your analog or digital MPX signal to your transmitter sites.  Centralize the MPX signal generation at the studio side   

Lower your CAPEX: no need for sound processors at each transmitter site.

Lower your OPEX: less power consumption, less space required, and less maintenance operations at transmitter sites.

Use managed or unmanaged links.

Get an audio monitoring feed from the transmitter site.

Secure your FM transmission by using redundant exciters connected to separate MPX outputs.

Tech Specs


2 internal redundant PSU 100-250VAC

2 analog MPX inputs and outputs ( BNC)

1 digital AES192 MPX input / output (XLR)

1 RS232 port

4 GPIs / 4 GPOs (Sub-D 25)


4 network ports (1 x 100 Mbps  + 3 x Gbps  RJ-45 ports)

VLANs, QoS (VLAN tagging, DSCP)

Unicast, multi-unicast, multicast, muti-multicast

IGMPv2 and v3

Encoding, decoding and streaming

Full duplex:  IP MPXencoding / IP audio decoding, or vice-versa

MPX transport formats

      PCM: 12, 16, 20, 24 bits, 192 kHz, or 144 kHz(analog to analog MPX only)

     microMPX:bitrate from 320 kbps to 576 kbps

Audio formats:  48kHz,  PCM, or MPEG L2,  L3, AAC,  Opus

FEC (+10%, +25%, +33%, +50%, +100%), dual streaming withtime diversity for MPX in PCM

microMPX FEC

Tunneling of auxiliary data (serial data from RS232 or UDP,triggers from GPIs or UDP)

Real time metrics on the received IP stream (network pathquality)

Backup of the MPX input source: analog / analog,AES192/analog

3 decoding priorities, with choice of the audio source oneach priority: IP MPX stream , MPX files on local SDHC card

Automatic switching between priorities based on configurablestream loss duration and stream recovery duration

MPX signal decoded to all the MPX outputs

Administration and supervision

Intuitive WEB GUI, with secure connection (HTTPS)

Control, monitoring, alarming through SNMP (SET, GET, Traps)with MIB

Save/load full codec configuration to/from local SDHC cardor remote PC

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