Intraplex® IP Link

IP Audio Codecs

The Intraplex® IP Link family of IP audio codecs provides high-end features at an affordable price.

Offering an array of audio coding options, the IP Link codecs are suitable for use in Studio to Transmitter Links (STLs) as well as audio contribution and distribution networks. Support for IP multicast and multiple unicast streams enables one encoder to feed multiple decoders.

By incorporating three IP Interfaces that can be used for streaming and management, the IP Link systems can provide a level of reliability not seen in comparably-priced codecs.

As the latest addition to the Intraplex family of audio transport products, the IP Link audio codecs bring legendary Intraplex reliability to the IP codec market.

  • IP Link 100: Single bi-directional stereo audio channels
  • IP Link 200: Two bi-directional stereo audio channels
  • Standard: Linear, AAC-LC, Opus and G.722 audio coding
  • Optional: AAC-HE, AAC-HEv2, AAC-ELD, MPEG2, MPEG3 and Enhanced aptX audio coding
  • Other transport modes: Transparent AES up to 192 kS/s to support composite FM multiplex signal over AES
  • Protocol Encapsulation: RTP, SHOUTcast/ICEcast, MPEG-TS
  • Three independent IP interfaces for redundant network operation
  • Optional redundant power supply
  • Built-in silence sensor with optional stream switch over
  • Automatic backup to audio playout from USB drive or external audio source
  • Multicoding – can encode the same audio source in multiple formats for STL, backup, and Web streaming
  • Dynamic Stream Splicing providing “hitless” operation and T1 /E1 circuit like performance on less predictable IP networks
  • Prioritized stream sources at the output with automatic switch over and switch back between primary and secondary streams and backup sources (USB, external audio source)
  • Programmable RTP level Forward Error Correction (FEC) scheme
  • Programmable Time Diversity and Interleaving of streams to combat burst packet losses
  • Integrated with Intraplex IP Link Scheduler for automated scheduled program switching
  • N+1 redudancy with Integrated control of external switching equipment
  • IP Link 200: SynchroCastTM option provides dynamically managed precision delay for Single Frequency Network (SFN) broadcasting and simulcasting
  • Support for IP multicast and multi-unicast
  • Web browser user interface and SNMP network management
  • Four multipurpose contact closure inputs and outputs provide
    –– Transport of logic signals with time-alignment to audio
    –– Stream control
    –– Alarm notification
Images / Diagrams

Specifications and designs are subject to change without notice.

Channels IP Link 100: 1 stereo (or 2 mono) program channels, encode and decode
IP Link 200: 2 stereo (or 4 mono) program channels, encode and decode
Coding Options Standard: Linear, AAC-LC, Opus G.722
Optional: MPEG2, MPEG3, AACHE, AAC-HEv2, AAC-ELD, Opus, enhanced aptX and transparent AES transport
Streaming EBU N/ACIP Tech 3326, SHOUTcast/Icecast, MPEG transport stream over IP, transparent AES, SynchroCast
SynchroCast Delay Programmable up to 1 second with 1 microsecond accuracy
Multicoding Allows the input to be encoded and streamed out using multiple different algorithms simultaneously
Digital/Analog Operation For input, digital/analog auto detection
For output, digital and analog simultaneous
Webcasting Can provide a TCP stream to a SHOUTcast or other Webcasting server
Backup Configurable for automatic backup to secondary incoming audio stream, playout of audio from USB drive, or playout of audio from a local device connected to the rear panel inputs
Aux Data Channel RS-232, in- or out-of-band data transport programmable between: 2400, 4800 and 9600 bp/s
Contact Closures 8 opto-isolated contact closures in each direction, with time-alignment to audio
Inputs can transport state to peer or put a stream in or out of service
Outputs can receive state from peer or be tied to system alarms
Hardware Redundancy N+1 with integrated support of external switching equipment
Connectors Rear panel:
IP Link 100: XLR for analog L&R and digital AES/EBU inputs and outputs
IP Link 200: XLR for channel 1 analog L&R and digital AES/EBU inputs and outputs, RJ-45 connectors with StudioHub cabling format for channel 2 audio input/output
RS-232 data: DB-9
Contact Closures: HD-26
Front panel: Audio headphone jack
GPS Internal antenna: SMA
External (10 MHz, 1 PPS connectors): BNC
Digital Audio
Accepted Audio Sampling Rates Accepts any AES/EBU sample rate between 32 and 48 kS/s
Audio Sample Resolution Selectable 16 or 24 bit
Sample Rate Conversion Automatic rate conversion at input to any other AES/EBU sample rate between 16 and 48 kS/s
Input/Output Impedance Balanced, 110 ohms ±20%
AES Transparent Transport
Sample Rate 32, 44.1, 48, and 192 kS/s
Analog Audio
Input Impedance Balanced, greater than 10 k ohms
Output Impedance Balanced, less than 52 ohms
Ethernet Data Rate 10/100Base-T (10 or 100 Mb/s)
Full duplex
Auto-negotiation with network
Network Connections 2 WAN ports plus separate management
Per port 802.1 pq configuration
Network Protocols IPV4, TCP, UDP, RTP, RTCP, SIP, HTTP, FTP Telnet, NTP, SNMPv2C, ARP, ICMP, Ultravox (v1, v2)
Remote Management Web browser interface SNMP
RTP Streams Total of 12 streams
Setup: Static or SIP
Unicast, multi-unicast, multicast
Standard RFC payload formats
Auto configuration
Source IP address and UDP port verification at the receiver for security
TCP Streams Total 12 HTTP streams to feed SHOUTcast or Icecast servers with selectable codec and coding rate for each stream
SIP Compliant with EBU N/ACIP Tech 3326
Works in peer to peer and proxy mode
NAT Traversal support
Redundancy Automatic failover mode for primary and secondary incoming streams
Dynamic Stream Splicing Optional: Enables redundant streams to be received across one or more networks
Jitter Buffer Programmable jitter buffer depth to 1024 packets (provides up to several seconds of network jitter compensation)
Forward Error Correction Multiple levels of 1 and 2 dimensional FEC schemes
Configured per stream from 25%, 50%, 66% and 100% overhead
Time Diversity Time delay configured on per stream basis, used with redundant streams for burst packet loss protection
Interleaving Matrix configured per stream
Used to prevent consecutive packet losses
Packet Loss Concealment Automatically performed by the system
Test Tone Generator 1004 Hz test tone at -12 dBFS equivalent to +8 dBm input
Loopbacks Received stream loopback
Equipment loopback
Network Performance Statistics Tracked Burst packet loss statistics based on RFC 3611
Per stream and group statistics for packets received, packet lost, packets recovered by FEC and packets sent
Sent and received total stream bandwidth
Status Indicators
LED Indicators Link activity, link status
IP Link 100: Multi-color LED indicators for L&R audio input and output
IP Link 200: VU meters for channel 1 and channel 2 input and output
Alarm Reporting Major/minor alarms, normally open relay contacts, SNMP traps
Maintains internal and sysLog messages alarm log
Log files can be sent off to offsite server for storage
User configurable per-stream packet loss threshold
Loss-of-Audio-Alarm Built-in silence detection with ability to provide alarm and perform switch over of stream on loss of audio
Mechanical and Environmental
Dimensions (H X W X D) 1RU: 1.75 x 19 x 14.25 in. (4.45 x 48.3 x 36.2 cm)
EIA rack mountable Weight 5 lbs (2.27 kg) typical
Power Supply Main: Universal AC, 50/60 Hz
Backup: Optional external module, universal AC to 12 VDC converter
Power Consumption 20 watts or less
Fuse Protection 2A AC input fuse
Cooling Convection cooled
Humidity To 95% non-condensing
Operating Temperature 32º to 122º F (0º to 50º C)
Regulatory Compliance CE, FCC Part 15 Class A, UL 60950, RoHS
Ordering Information
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