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Digigram IQOYA X/LINK-MPX User Manual

Mpx over ip codec
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IQOYA X/LINK-MPX
MPX over IP codec
Date
Changes
May, 7, 2021
Valid for firmware 3.08
October, 2021
Valid for firmware 3.09
November 2021
Valid for firmware 3.09. Update for EMC standards and safety rules.
November 2022
A few corrections about the WEB GUI.
IQOYA X/LINK-MPX user manual
User manual
Firmware 3.09
November 2022
Document Status
Applicable
Applicable
Applicable
In progress
1

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Summary of Contents for Digigram IQOYA X/LINK-MPX

  • Page 1 IQOYA X/LINK-MPX user manual IQOYA X/LINK-MPX MPX over IP codec User manual Firmware 3.09 November 2022 Date Changes Document Status May, 7, 2021 Valid for firmware 3.08 Applicable October, 2021 Valid for firmware 3.09 Applicable November 2021 Valid for firmware 3.09. Update for EMC standards and safety rules.

  • Page 2: Table Of Contents

    5.2 Programs 5.3 IP services 6 INSTALLATION 6.1 Grounding IQOYA X/LINK-MPX 6.2 Connecting IQOYA X/LINK-MPX to the network 6.3 Enabling / disabling the hardware bypass function 6.4 Powering up IQOYA X/LINK 6.5 Steps to follow to configure IQOYA X/LINK 7 Accessing IQOYA X/LINK WEB pages...
  • Page 3 IQOYA X/LINK-MPX user manual 9.1.1.1.4 Preferences −> System −> Alarms setup 9.1.1.1.5 Preferences −> System −> Logs 9.1.1.1.6 Preferences −> System −> Download / Upload 9.1.1.1.7 Preferences −> System −> SD card 9.1.1.1.8 Preferences −> System −> SD card backup 9.1.1.1.9 Preferences −>...
  • Page 4 IQOYA X/LINK-MPX user manual 11 Specifications 11.1 CONFIGURATION 11.2 CONNECTIVITY 11.3 ANALOG AUDIO INPUTS 11.4 ANALOG AUDIO OUTPUTS 11.5 MPX ANALOG INPUTS 11.6 MPX ANALOG OUTPUTS 11.7 MPX AES192 INPUT 11.8 MPX AES192 OUTPUT 11.9 HEADPHONES OUTPUT 11.10 ANALOG AUDIO PERFORMANCES 12 APPENDIX A: GPIO’s CONNECTORS...
  • Page 5 IQOYA X/LINK-MPX user manual Important Safety Information: read carefully before using this equipment! Follow these instructions and keep them in a safe place! Keep in mind that damages due to failure to observe the instructions contained in this manual are not covered by warranty.
  • Page 6 IQOYA X/LINK-MPX user manual Cleaning Nettoyage Reinigen des Geräts Clean only with a soft, dry cloth. If necessary, after Nettoyez uniquement avec un chiffon doux et sec. Si Säubern Sie das Gerät nur mit einem weichen, disconnecting the unit’s cables, wipe it with a soft cloth nécessaire, après avoir débranché...

  • Page 7: Information For The User

    IQOYA X/LINK-MPX user manual INFORMATION FOR THE USER “This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment.
  • Page 8 While every effort has been made to ensure accuracy, Digigram is not responsible for errors, omissions or typos, and reserves the right to make improvements or changes in the products and programs described without notice.

  • Page 9: Key Hardware Features

    IQOYA X/LINK-MPX user manual 2 KEY HARDWARE FEATURES ● 1U rack ● Two internal redundant power supply units (2x220 VAC, optionally 220VDC / -48VDC) ● 4 Ethernet ports via RJ-45 connectors. 1 x 100 Mbits/s, and 3 x 100/1000 Mbits/s ports ●...

  • Page 10: Optional Software Features

    IQOYA X/LINK-MPX user manual 3.1 Optional software features ● microMPX compression format ● Synchronization of MPX decoders, based on NTP 3.2 Supported audio algorithms MPX 192 kHz ● Linear PCM 12/16/20/24 bits ● Optional microMPX (320 kbps to 576 kbps), with or without inband FEC.

  • Page 11: Physical Interfaces

    IQOYA X/LINK-MPX user manual 4 PHYSICAL INTERFACES 4.1 Front panel 4.1.1 LEDs PSU1 Status of the first internal power supply unit. Blue if PSU is ok. Off for PSU failure. PSU2 Status of the second internal power supply unit. Blue if PSU is ok. Off for PSU failure.

  • Page 12: Headphones Output

    IQOYA X/LINK-MPX user manual Storing backup playlists and sound files 4.1.4 Headphones output Allows audio monitoring. The push button allows the selection of the audio source to be monitored: encoder input, decoder output Note: for an MPX signal, the low band of the MPX signal (Left + Right audio) is monitored in mono.

  • Page 13: Back Panel

    IQOYA X/LINK-MPX user manual 4.2 Back panel...

  • Page 14: Working Principles

    IQOYA X/LINK-MPX user manual 5 WORKING PRINCIPLES IQOYA X/LINK-MPX allows the following use cases: At the studio side ● Encoding of one MPX IP stream from an analog MPX input or the digital MPX input, ● and decoding of a return IP audio stream to the analog outputs.

  • Page 15: Audio Inputs And Outputs

    5.2 Programs On the encoding section of IQOYA X/LINK-MPX, a program is the encoding of one MPX input or two mono audio inputs or one stereo audio input. A program is then defined by the following parameters: ●...

  • Page 16: Ip Services

    Once IQOYA is installed and properly grounded, you can connect the Eth ports and audio I/Os as required for your installation. 6.2 Connecting IQOYA X/LINK-MPX to the network We recommend that the first connection to the IQOYA codec is done on a LAN. The default IP addresses of IQOYA X/LINK Eth ports are: ●...

  • Page 17: Enabling / Disabling The Hardware Bypass Function

    6.3 Enabling / disabling the hardware bypass function IQOYA X/LINK-MPX allows for the hardware bypass of the analog audio inputs to the analog audio outputs, and of the MPX AES input to the MPX AES output in case of power supply failure.
  • Page 18 IQOYA X/LINK-MPX user manual...

  • Page 19: Accessing Iqoya X/Link Web

    IQOYA X/LINK-MPX user manual 7 Accessing IQOYA X/LINK WEB pages From a WEB browser, connect to the IQOYA X/LINK WEB pages: ● for a network connection through Eth1 port, enter https://192.168.0.100 (this is the default IP address of Eth1). ●...

  • Page 20: Configuration From The Web

    IQOYA X/LINK-MPX user manual Once the login has passed, the home page is displayed. 8 Configuration from the WEB pages Click on the “value” field of a parameter to enter the edit mode. The background colour of all the parameters that can be modified becomes white.

  • Page 21: Web Pages Organization

    IQOYA X/LINK-MPX user manual 9 WEB pages organization 9.1 WEB pages organization in “Program Distribution” mode of use The WEB pages are organized in categories which are always accessible from the left side of the WEB pages. Icon Category Description...

  • Page 22: Preferences −> System

    IQOYA X/LINK-MPX user manual 9.1.1.1 Preferences −> System 9.1.1.1.1 Preferences −> System −> Properties Parameter Read/Write Meaning Hostname R / W Logical name given to the device on the network. Device Name R / W Name given to the equipment...

  • Page 23: Preferences −> System −> Audio Clock

    IQOYA X/LINK-MPX user manual 9.1.1.1.2 Preferences −> System −> Audio Clock This page allows defining the X/LINK sampling clock source . The clock source can be: ● Internal: on-board clock. ● Extracted from the MPX AES192 input The internal clock is set from Preferences −>...

  • Page 24: Preferences −> System −> Alarms Setup

    IQOYA X/LINK-MPX user manual 9.1.1.1.4 Preferences −> System −> Alarms setup Each alarm occurring on IQOYA can be written in a log file, or/and sent to a GPO, or/and signalled as an SNMP trap (not available in the first firmware version).
  • Page 25 IQOYA X/LINK-MPX user manual Available alarms Receive secondary backup source Priority 3 of the output program is System log cleared Log file has been cleared failed not available Eth0 cable unplugged No connection of Eth0 Receive sync failed Eth1 cable unplugged...

  • Page 26: Preferences −> System −> Logs

    IQOYA X/LINK-MPX user manual 9.1.1.1.5 Preferences −> System −> Logs This page allows viewing and downloading the log file of IQOYA X/LINK. This log file gives information about the internal behaviour of IQOYA, and is useful for advanced diagnostics. Traces of enabled alarms are written into this log file (alarm ON, alarm OFF).

  • Page 27: Preferences −> System −> Sd Card Backup

    IQOYA X/LINK-MPX user manual ● mounting an SDHC card if it is inserted while the unit is running, ● unmounting it before removing it from the front panel. ● Viewing the SDHC card status: mounted/unmounted 9.1.1.1.8 Preferences −> System −> SD card backup The codec configuration can be saved to an SDHC card or loaded from it.

  • Page 28: Preferences −> System −> Password

    IQOYA X/LINK-MPX user manual Select the appropriate action through the list. For a firmware update, select “Upload a package”, and click on “Browse” to select the file to be uploaded. Click on “Apply” to start the upload. Audio activity is not stopped during the upload.

  • Page 29: Preferences −> System −> Shutdown / Restart

    IQOYA X/LINK-MPX user manual First select the profile for which credentials have to be changed. Login: allows configuring the username to be used in order to log to the WEB GUI with the selected profile. Old password: Type the current password...

  • Page 30: Preferences −> Services

    IQOYA X/LINK-MPX user manual 9.1.1.2 Preferences −> Services This menu allows configuring the services running on IQOYA. 9.1.1.2.1 Preferences −> Services −> NTP This page allows: ● configuring the date and time synchronization to an NTP server. ● enabling the optional feature “audio synchronization on NTP clock”.

  • Page 31: Preferences −> Services −> Ssh

    9.1.1.2.3 Preferences −> Services −> SSH This page allows enabling/disabling the SSH service on IQOYA. SSH is mainly to be used by Digigram technical support for advanced diagnostics. 9.1.1.2.4 Preferences −> Services −> SNMP his page allows setting the SNMP parameters.

  • Page 32: Preferences −> Services −> Https

    IQOYA X/LINK-MPX user manual Click on “Apply” to confirm the settings. 9.1.1.2.5 Preferences −> Services −> HTTPS This page allows setting a bandwidth limitation to the HTTP traffic. In case the IP audio stream takes almost all the available network bandwidth, the HTTP traffic generated when accessing the WEB pages may disturb the IP audio frames transmission, because the total bandwidth necessary for the IP audio stream plus HTTP traffic may exceed the available network bandwidth.

  • Page 33: Preferences −> Network

    IQOYA X/LINK-MPX user manual 9.1.1.3 Preferences −> Network This menu allows accessing the network configuration of IQOYA. 9.1.1.3.1 Preferences −> Network −> Eth1 (-> Eth4) hese pages allow configuring the four network ports of IQOYA X/LINK. Click on a parameter field (“Status” for instance) to enter the editing mode.

  • Page 34: Preferences −> Network −> Vlan

    IQOYA X/LINK-MPX user manual Speed and duplex mode asked Read/Write Allows selecting the working mode of the ethernet interface. Possible values are as follows: We recommend avoiding the “Auto-negotiation” mode. Select the mode supported by the network node that is connected to the IQOYA.
  • Page 35 IQOYA X/LINK-MPX user manual Click on “+Add VLAN” to declare a new VLAN. Parameter Type Description Network interface Read/Write Select the network interface that will support the VLAN (ETH1 to ETH4) VLAN ID Read/Write Enter the VLAN ID in the range 1--4095. Avoid ids 1002 to 1005 which are reserved.

  • Page 36: Preferences −> Network −> Ip Routing

    IQOYA X/LINK-MPX user manual 9.1.1.3.3 Preferences −> Network −> IP routing This page allows viewing the current IP routing table, downloading it, and uploading a modified IP routing table. In case the routing table has to be modified, click on “Download”.

  • Page 37: Preferences −> Auxiliary Data −> Serial Port

    IQOYA X/LINK-MPX user manual 9.1.1.4.1 Preferences −> Auxiliary data −> Serial port This page allows for enabling/disabling the RS232 port, and for setting its configuration. To modify the parameters of a COM port, click on its icon on the left column.

  • Page 38: Preferences −> Auxiliary Data −> Gpio

    IQOYA X/LINK-MPX user manual 9.1.1.4.2 Preferences −> Auxiliary data −> GPIO X/LINK offers the possibility to use physical GPIOs, or virtual GPIOs through UDP ports. The status of the physical or virtual GPI’s is tunneled in-band so that the decoder can output the status information on physical or virtual GPO’s.
  • Page 39 IQOYA X/LINK-MPX user manual The following screen capture corresponds to the mode “In & Out”. Parameter Type Description UDP Tunneled GPIs User ID Read/Write Allows defining a group of Virtual GPIs (among 32 possible tunneled GPIs) sent by an application. The 32 virtual GPIs can be shared between several applications.

  • Page 40: Preferences −> Auxiliary Data −> Udp

    IQOYA X/LINK-MPX user manual 9.1.1.4.3 Preferences −> Auxiliary data −> UDP This page allows defining the UDP ports used for receiving and/or sending serial data over IP. Parameter Type Description Socket name Read/Write Name given to the UDP socket. This name allows selecting the socket for tunneling data, in the Send−>IPService and Receive−>Program pages.

  • Page 41: Audio I/Os Category Of Menus

    IQOYA X/LINK-MPX user manual 9.1.2 Audio I/Os category of menus This category includes all the menus for the configuration of the inputs outputs. 9.1.2.1 Audio I/O −> Input 9.1.2.1.1 Audio I/O −> Input −> settings This page allows configuring the audio inputs and the MPX inputs.
  • Page 42 IQOYA X/LINK-MPX user manual Displayed VU-meters unit is dBFS. Select “Unlock faders” to change the input gains. The faders allow adjusting the input gain by steps of 0.01 dB. ● If the first channel type is “‘Analog Line Audio”, left and right input gains can be calibrated for audio signals up to +24 dBu.

  • Page 43: Audio I/O −> Output

    IQOYA X/LINK-MPX user manual 9.1.2.2 Audio I/O −> Output 9.1.2.2.2 Audio I/O −> Output −> settings ● The first two outputs (Output 1 and Output 2) can be set to analog or MPXAES192. - Choosing “Analog Line Audio” selects the analog audio outputs, which means the decoding section is used to decode an IP audio stream.

  • Page 44: Send" Category Of Menus

    IQOYA X/LINK-MPX user manual All gains adjustments are in steps of 0.01dB. Input signals can be muted/unmuted by selecting “Mute/Unmute” below each fader. VU-meters settings Click on the “Settings” button to adjust the bargraph display and the front panel LED VU-meters display (red zone, orange zone, and green zone).
  • Page 45 IQOYA X/LINK-MPX user manual In case some programs are already created, they are listed in the Programs page, with their characteristics: name, mode, first audio input, sample rate, audio format, bitrate, IP Service using this Program. If a Program is used in at least one IP Service, the icon is displayed on the left of its name, and “Used”...
  • Page 46 IQOYA X/LINK-MPX user manual A new program can be created by duplicating one of the displayed programs; click on the icon in front of the program to be duplicated. Parameter Type Description Name Read/Write Name given to the encoding instance. This name will be selected when declaring an IP service.
  • Page 47 IQOYA X/LINK-MPX user manual Input signal for silence In case IQOYA is used as an encoder, it can generate an alarm when silent audio is detected on the audio inputs, and detection set this alarm off when the audio signal is detected again. (Note that all the alarms handled by IQOYA can be enabled/disabled from the “Alarms setup”...

  • Page 48: Send −> Ip Services

    IQOYA X/LINK-MPX user manual If all Programs are unused and you want to delete them all, click on the icon on the left of the column title “Program Name” (this selects all the Programs), and click on the button on the top of the Programs list.
  • Page 49 IQOYA X/LINK-MPX user manual Parameter Type Description Name Read/Write Name given to this IP service Program Name Read/Write Select the program to be transported in the IP stream. The program can be an audio program (compressed or uncompressed audio), or an MPX program (compressed or...
  • Page 50 IQOYA X/LINK-MPX user manual Case of an audio program or uncompressed MPX program The RTP protocol is to be used for streaming. Parameter Type Description Program Name Read/Write Select the Program to be streamed from the list of Programs. Data tunnelling (This section is displayed only if tunnelling has been activated from Preferences->Auxiliary data->GPIO).
  • Page 51 IQOYA X/LINK-MPX user manual Network interface/VLAN Read/Write Select the network interface or VLAN for this stream. In case the target address is unicast, select “Any” so that the Eth interface is determined automatically according to this IP address, or select a VLAN.
  • Page 52 IQOYA X/LINK-MPX user manual FEC on 1 stream means that additional data is sent in the IP audio stream (in-band). FEC on 2 streams means additional data is sent as a second IP stream. Dual stream FEC means that the IP stream is duplicated. When no delay is selected, primary stream and redundant stream are sent at the same time.
  • Page 53 IQOYA X/LINK-MPX user manual Network interface/VLAN Read/Write Select the network interface or VLAN for this FEC stream. In case the target address is unicast, select “Any” so that the Eth interface is determined automatically according to this IP address, or select a VLAN.

  • Page 54: Receive" Category Of Menus

    IQOYA X/LINK-MPX user manual DSCP Read/Write Select the quality of service (QoS) class of the stream. Payload type Read/Write Unused. Leave this parameter value to 0. Click on the icon to declare an additional IP destination. Enter the parameters for this new stream.
  • Page 55 IQOYA X/LINK-MPX user manual MPX PCM RTP stream or baseband audio IP stream micoMPX UDP stream Parameter Type Description IP service name Read/Write Name given to this IP service. This is the name that can be selected in the source of a decoding priority of an output program.

  • Page 56: Receive −> Programs

    IQOYA X/LINK-MPX user manual In case the audio format of the RTP IP stream is not signalled in-band, it is necessary to declare if the received IP service includes an FEC (this is not valid for microMPX streams). Select the appropriate FEC for the field “Type “ as shown below. The payload type is set automatically.
  • Page 57 IQOYA X/LINK-MPX user manual Output programs configuration is accessible either from the left column , or directly from the icon “GO to programs” on the top right of the IP Services The “Programs” page displays the declared output programs. To declare a new output program, click on , or create it from an existing one by selecting the icon the left of the program.
  • Page 58 IQOYA X/LINK-MPX user manual Backup switching criteria Program Parameter Description IP stream loss duration In case the codec is configured to decode an IP audio stream and at least one backup is defined, you can configure the backup switching criteria.
  • Page 59 IQOYA X/LINK-MPX user manual Configuring a decoding priority For an MPX output program, all the declared priorities must have an MPX source (MPX IP stream PCM or µMPX, MPX file on the SDHC card). For an audio output program, all the declared priorities must have an audio source ( IP audio stream, sound file on the SDHC card, audio input).
  • Page 60 IQOYA X/LINK-MPX user manual Disabled Read/Write Set this parameter to “Yes” to disable this decoding priority. Disabling a defined priority is useful when some servicing is in progress on it (network servicing, servicing on the source of the IP stream). The priority can then be enabled when servicing operations are finished.
  • Page 61 IQOYA X/LINK-MPX user manual Priority Source Parameter Type Disable upon silence detection Read/Write IQOYA can also automatically disable the decoding priority in case of silence detection in the source. The priority can then be enabled again via the WEB site, or via SNMP.
  • Page 62 IQOYA X/LINK-MPX user manual Source Type = File or Playlist Parameter Type Description Type Read/Write File or Playlist. These files are stored locally on the internal DOM (disk on module). Audio File Read/Write Select the audio file or MPX file or playlist from the list.
  • Page 63 IQOYA X/LINK-MPX user manual To view the content of a program, click on on the left of its name. The decoding priorities of the program are displayed as well as some associated information: ● Name: program name ● Priority: 1, 2, or 3 priorities are displayed, depending on what has been defined.
  • Page 64 IQOYA X/LINK-MPX user manual ● Metrics/view: Click on view to display the metrics of the IP service. These metrics are important characteristics of the network path. In case an FEC is used, metrics are available for both the primary stream and the FEC stream.

  • Page 65: Status

    IQOYA X/LINK-MPX user manual Duplicated packets Number of IP frames that are received more than once. IQOYA automatically removes duplicated frames. Reordered packets Number of IP frames that have been reordered after being received disordered. Recovered packets Number of IP frames that are recovered thanks to the FEC.

  • Page 66: Specifications

    IQOYA X/LINK-MPX user manual 11 Specifications 11.1 CONFIGURATION Dimensions 19”, 1RU Weight ~ 3.1 kg (∼6.85 lbs) Power supply 2 internal redundant PSU 100-240VAC, 50/60 Hz, 0.7A Optional: 100-240VAC / -48VDC Temperature / Humidity non-condensing Operating: 0°C – 50°C / 0% – 95% Storage: -5°C –...

  • Page 67: Mpx Aes192 Input

    IQOYA X/LINK-MPX user manual 11.4 ANALOG AUDIO OUTPUTS Type 2 Line balanced D/A converter resolution 24 bits Maximum input level/ +24 dBu/ <100 Ω impedance Adjustable analog gain Gain adjustment so that 0dBfs gives from -21dBu up to +24 dBu; 0.01 dB steps 11.5 MPX ANALOG INPUTS...

  • Page 68: Headphones Output

    IQOYA X/LINK-MPX user manual Adjustable gain from –15 dB to +15 dB; 0.01 dB steps 11.9 HEADPHONES OUTPUT Type 1 balanced (6.35mm jack) Power max 2x50 mW / 2x32 ohms load 11.10 ANALOG AUDIO PERFORMANCES Frequency response 20 Hz-20 kHz +/- 0,1 dB at 48 kHz Signal to Noise >108 dBA...

  • Page 69: Appendix A: Gpio's Connectors

    IQOYA X/LINK-MPX user manual 12 APPENDIX A: GPIO’s CONNECTORS GPIO pinout GPIO GPO_4 GPI_4 GPO_3 GPO_3 GPO_2 GPI_2 GPO_1 GPO_1 Label unused N.O. unused N.C. N.O. unused N.C. GPIO GPO_4 GPO_4 GPO_3 GPI_3 GPO_2 GPO_2 GPO_1 GPI_1 Label unused GND N.O.
  • Page 70 IQOYA X/LINK-MPX user manual General Purpose Outputs (GPOs) The IQOYA X/LINK GPO’s are opto-isolated SPDT type relays (Single Pole, Double Throw). Each GPO features 3 pins: ● COM : Common ● N.C. : normally closed ● N.O. : normally open According to the status applied to the GPO, pin N.C.

  • Page 71: Appendix B: Serial Port (Rs232 On Db9)

    IQOYA X/LINK-MPX user manual 13 APPENDIX B: SERIAL PORT (RS232 ON DB9) Description Not connected RxD (received data) TxD (transmitted data) Not connected Signal ground Not connected RTS (request to send) CTS (clear to send) Not connected QOYA X/LINK codecs provide an RS232 serial port on a male DB-9 connector on the back panel. Use this port to connect any compatible device.

  • Page 72: Appendix C: Typical Audio Latency Values

    IQOYA X/LINK-MPX user manual 14 APPENDIX C: TYPICAL AUDIO LATENCY VALUES The back to back latency between two IQOYA X/LINK devices depends on the selected audio format, the network quality, and the enabled functionalities (backup, half/full duplex, FEC). See the table underneath for maximum latency values in half-duplex, using neither failover configurations nor FEC, with the jitter buffer size set to 0, and with an optimized network.
  • Page 73 IQOYA X/LINK-MPX user manual APPENDIX F: AAC SETTINGS FOR STEREO SAMPLES AAC type Sampling frequency (Hz) Audio bit rate IP stream bit rate (bit/s) (bit/s) AAC-LC 16000 32000 – 39999 8250+ Audio bit rate AAC-LC 22050 32000 – 39999 11369+ Audio bit rate...
  • Page 74 IQOYA X/LINK-MPX user manual AAC type Sampling frequency (Hz) Audio bit rate IP stream bit rate (bit/s) (bit/s) AAC-LD 16000 AAC-LD 22050 AAC-LD 24000 80000 – 111999 24750 + Audio bit rate AAC-LD 32000 112000 – 320000 33000 + Audio bit rate...

  • Page 75: Appendix D: Available Fec's For Raw Rtp Audio Or Uncompressed Mpx Streaming (No Ts Encapsulation)

    IQOYA X/LINK-MPX user manual 15 APPENDIX D: AVAILABLE FEC’ FOR RAW RTP AUDIO OR UNCOMPRESSED MPX STREAMING ( ENCAPSULATION FEC (Forward Error Correction) is a mechanism which consists in sending redundant information (redundant frames) to the decoder so that it can compensate for packet transmission errors on unreliable networks.
  • Page 76 IQOYA X/LINK-MPX user manual ● When in-band audio format signaling is disabled, it is possible to define the destination address and port of the FEC stream.
  • Page 77 IQOYA X/LINK-MPX user manual 16 APPENDIX E: REDUNDANT DUAL STREAMING FOR RTP STREAMS (AUDIO OR UNCOMPRESSED MPX) Spatial diversity IQOYA X/LINK can be configured to send the same AoIP stream on two distinct networks, typically through Eth0 and Eth1 interfaces. On the decoding side, IQOYA automatically synchronises both received streams. Using separate network paths ensures that potential network failures are statistically uncorrelated, enabling the reconstruction of a unique unperturbed stream.
  • Page 78 IQOYA X/LINK-MPX user manual Notes: ● When in-band audio format signalling is enabled, FEC stream is sent to the same IP address as the primary stream, and on UDP port + 2. ● When in-band audio format signalling is disabled, it is possible to define the destination address and port of the FEC...

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