Tieline Technologies


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The Affordable Multipoint IP Audio Codec  

Tieline’s Bridge-IT is the ultimate affordable, high-performance, stereo IP audio codec solution for broadcast and professional applications. Designed to deliver point-to-point or multi-point connections, Bridge-IT transports audio streams reliably, simply and effectively over a range of managed and unmanaged wired and wireless* IP data networks, such as LANs, WANs and the internet

Download the USB Driver here (25 KB)
Note: this driver is required only for Microsoft® Windows® XP systems and below.

Download the Bridge-IT Quick Start Guide


Bridge-IT for inexpensive IP audio solutions…  

------------ Bridge-IT front and back

Expand your IP network at a fraction of the cost of competing IP codecs, without compromising on quality or broadcast quality features. Multi-unicast in stereo to up to 6 different end-points from a single codec and reduce capital expenditure across your broadcast network.


Bridge-IT is perfect for:

  • Studio-to-Transmitter Link (STL) applications

  • Studio-to-Studio Link (SSL) applications

  • Point-to-Point IP audio distribution

  • Multi-point IP audio distribution 

  • Simple remote broadcast links

  • Cable Head End IP Audio Distribution

  • Low-latency audio over IP bridging solutions

  • Multiple codec installations (2 codecs fit in 1 x 19” rack unit)

Hear the Tieline SmartStream Difference...

--------- SmartStream logo

As an IP audio pioneer, Tieline has built up many years of knowledge and expertise in broadcasting audio over unmanaged IP Networks like the internet. Tieline's exclusive and proprietary SmartStream IP technology responds to variable IP network conditions with agility and flexibility to significantly improve connection reliability over lossy IP networks such as cell-phone networks and the internet, especially in those situations when Quality of Service (QoS) is unavailable.

Some other manufacturer's charge thousands of dollars for IP managment software as if it's an optional extra. Tieline believes high performance and rock-solid reliability is an essential part of each and every broadcast and delivers its renowned SmartStream IP management software for free. Tieline's dynamic jitter buffering, forward error correction and packet repair, deliver continuous high quality audio over both managed networks and the open Internet.

Flexibility and Compatibility...

 ------ EBU NACIP logoBridge-IT is IPv4/v6 and EBU N/ACIP Tech 3326 compatible over IP and will connect to any SIP-enabled IP codec brand with industry standard algorithms, as well as VoIP devices supporting G.711 and G.722. Bridge-IT is also internet/satellite streaming and HD and digital radio compatible. 

It is designed for desktop use or two units can be installed side-by-side in a purpose-built 1RU mounting bracket.

Simple to use and loads of features…

------------ Danny Lipford

Bridge-IT is cost-effective and produced a quality broadcast for our audience and fans.  We definitely made the right choice for our show and appreciate all of the help from the team at Tieline.

Dennis Gould, Engineer/Producer

“Today’s Homeowner” Radio Show

Compare Bridge-IT’s superior programming functionality and simple user interface with other inexpensive codecs. Don't forget that Bridge-IT:

  • Features front panel navigation, LCD display, PPM metering and dialing key pad.

  • The comprehensive Toolbox web-browser GUI control interface (Java and HTML versions now available).

  • Has broadcast XLR connectors, simultaneous analog and digital audio in/outs, plus a huge range of algorithms - including Opus as standard.

  • Is IPv4/v6 and EBU N/ACIP Tech 3326 compatible over IP and will connect to any SIP-enabled IP codec brand.

  • Has had reliable automated SD card backup (since 2009), unlike some other competing products!


Bridge-IT Features

Bridge-IT comes with a huge range of features. aptX® Enhanced audio coding is also available as an additional option.

Bridge-IT Features


Point-to-point mono and stereo IP audio



SmartStream IP software for automatic management of IP streaming


High quality, low-delay linear audio plus Opus, AAC-LD, AAC-ELD, LC-AAC, HE-AAC v.1, HE-AAC v.2, plus low-delay Tieline Music and MusicPLUS, G.711, G.722 and MPEG Layer 2 algorithms.


Simultaneous analog and digital XLR AES/EBU outputs


Automatic SD/SDHC card connection failover


Toolbox Web-GUI for remote control and configuration


EBU N/ACIP Tech 3326 compatibility over IP and will connect to any SIP-enabled IP codec


2 relay inputs and 2 opto-isolated outputs plus RS-232 for local and remote control of equipment


Multicast, or Multi-unicast up to 6 stereo connections, one with bidirectional audio


16 bit and 24 bit aptX® Enhanced algorithm



Broadcast Quality Connectors

Unlike most affordable IP audio codecs, Bridge-IT has all the broadcast connectors you would expect on a full-featured codec. Simultaneous analog and digital AES/EBU audio outputs are provided on XLR connectors and it includes a ¼” (6.35mm) stereo headphone output.

--------- Bridge-IT - rear panel description

Huge choice of standard algorithms...

Bridge-IT comes standard with 16 Bit 22kHz uncompressed linear audio, as well as Opus, MPEG Layer 2, AAC-LD, AAC-ELD, LC-AAC, HE-AAC v.1 and HE-AAC v.2G.711, G.722 and Tieline Music and MusicPLUS. Music PLUS delivers 22 kHz mono and stereo with 20ms encode delay at under100 Kbps, offering huge savings on your IP data bills and outstanding audio quality. HE-AAC v.2 is capable of delivering high fidelity stereo IP audio at bit-rates as low as 24Kbps. Optional aptX Enhanced encoding is also available for extremely low delay connections.

Automatic SD Card Backup…

In case your IP link fails Bridge-IT also has an SD/SDHC card slot which can be pre-loaded with MP3 or linear backup audio for playback. Bridge-IT's onboard relay control ports can also be programmed to notify you of a failure via any third party relay-enabled hardware.

* Requires 3rd party hardware to connect to wireless network.


  • Compact design, with two codecs fitting into a 1RU mounting bracket.
  • Suitable for point-to-point and multi-point IP connections over a variety of connection transports, including WANs like the internet.
  • EBU N/ACIP Tech 3326 compatibility over IP
  • Linear audio with a suite of high quality broadcast algorithms as standard, plus optional aptX® Enhanced, AAC-LC, AAC-HE v.1, AAC-HE v.2, AAC-LD and AAC-ELD.
  • Tieline's loss-tolerant MusicPLUS algorithm provides up to 22 kHz stereo audio quality with 20ms coding delay at bit rates as low as 96kbps - making it ideal for today's IP and 3G networks.
  • Tieline Music can deliver up to 15 kHz FM quality mono audio at bit-rates as low as 24Kbps, with only 20 milliseconds encoding delay.
  • SmartStream IP software automatically manages jitter buffering, forward error correction and packet repair.
  • Full hardware front panel interface including navigation, LCD display, PPM metering and dialing key pad.
  • Web GUI for programming codec functionality and RS232 data connections.
  • Integrates seamlessly with TieServer for simple IP configuration and one touch IP connections.
  • Broadcast quality analog XLR inputs/outputs.
  • XLR digital AES/EBU input/output.
  • Simultaneous analog and digital AES/EBU audio outputs.
  • Onboard SDHC card slot for automatic audio failover.
  • ¼” (6.35mm) stereo headphone output.
  • 2 relay inputs and 2 opto-isolated outputs plus RS-232 for local and remote control of equipment at either end of your codec link.
  • USB slave connection for codec configuration.

Buy today and receive:

  • Point-to-point mono and stereo IP audio bidirectional audio
  • The ability to send up to 6 stereo multi-unicast connections over LANs and WANs like the internet (optional licence upgrade).
  • Multicasting to unlimited numbers of codecs across compatible IP networks (optional licence upgrade)
  • High quality low-delay linear audio
  • Opus, G.711 G.722, MPEG Layer 2, plus low-delay Tieline Music and MusicPlus algorithms
  • AAC-LD, AAC-ELD, AAC-LC, AAC-HE v.1 and AAC-HE v.2 algorithms (optional licence upgrade)
  • aptX® Enhanced algorithm (optional licence upgrade)
  • EBU N/ACIP Tech 3326 compatibility over IP and will connect to any SIP-enabled IP codec
  • Simultaneous analog and digital AES/EBU outputs
  • Automatic fail-safe SD/SDHC card connection failover
  • Web-GUI for remote control and configuration
  • Automatic firmware upgrade notification via the Web-GUI
  • Tieline’s SmartStream technology for automatic management of IP connection streaming

*Contact Tieline or your favorite dealer for a quote on software feature upgrades. For a full list of Specifications please download the brochure here.


Input/Output Specifications

Analog Audio Inputs

2 x Female XLR (Channel 1 mic/line; channel 2 line only)

Analog Audio Outputs

2 x Male XLR


1 x female XLR (Channel 1 in; shared with Ch1 analog input)

AES3 Out

1 x male XLR


1 x 6.35mm (1/4") Jack on rear panel

Control Ports In/Out

Two relay inputs and two opto-isolated outputs for machine control via Phoenix connector

Audio Input Impedance

High Impedance  > 5K ohm

Output Impedance

<50 ohm Balanced

Clipping Level

+22dBu (input and outputs)

24 bit A/D & D/A Converters


Frequency Response

20Hz to 20kHz

Total Harmonic Distortion

<0.0039% at +16dBu, or -88dBu unweighted

Signal To Noise Ratio

>90dB at +22dBu, unweighted

Sample Frequencies

IP Sample Frequencies

16kHz, 32kHz, 44.1kHz, 48kHz



Opus, Tieline Music, Tieline MusicPLUS, G.711, G.722, MPEG Layer 2

IP (Pro version only)


IP (Pro version only)

16/24 bit Enhanced apt-X

IP (uncompressed)

Linear PCM16

Data and Control Interfaces


USB 2.0 (Type B) host port on the rear panel


10/100 base T RJ45 connector


RS232 up to 115kbps with or without CTS/RTS flow control via female DB9 connector, can be used as a proprietary data channel

Front Panel Interfaces


128 x 64 monochrome LCD

SD/SDHC Card Slot

Supports SDHC Flash Cards


20 button keypad


5 button keypad




8.5” x 5.9” x 1.75” (216mm x 150mm x 44mm)



Power Consumption

12V DC, 400mA

Operating Temperature

0°C to 50°C (32°F to 122°F)

Humidity Operating Range

20% ≤RH ≤70% (0 to 35°C), non-condensing

Internal Battery

Panasonic CR2032, 3V coin type 20mm

This Product Supports