Tieline
Encyclopedia
Tieline Technology has offices in Indianapolis
in the USA (Tieline America LLC) and in Perth
, Western Australia
(Tieline Pty Ltd). The company has a wide and established distribution network throughout Europe, the Americas and Australasia. Tieline develops a range of broadcast audio codecs that are sold to television and radio networks around the globe. All Tieline codecs are IP codec
s, ISDN codecs, POTS codec
s, GSM codecs, X.21 codecs and satellite-capable (IP and ISDN) codecs.
Broadcasters use these codecs for remote broadcast
s (outside broadcasting
), for audio distribution between studios and for studio/transmitter link
(STL) applications. Tieline codecs are Session Initiation Protocol
(SIP) compatible and Tieline and ten other codec manufacturers have successfully tested IP Interoperability using SIP to connect according to EBU N/ACIP tech 3326 specifications relating to sending audio over IP
.
In 1995 TVC became Audio Video Communications (AVC). The growing range of video products expanded heavily into audio products including radio Broadcast Mixing consoles, signal measurement, conversion, and amplification products, which it sold throughout Australasia.
In 1998 AVC identified a growing market for digital audio codec
s required to deliver live, studio quality audio over narrow band networks such as analogue telephone and ISDN links. AVC developed a family of world class digital POTS codec
s and ISDN codecs. These were branded under the name Tieline and between 1998 and 2001 AVC developed a global distribution network spanning the Americas, Europe, UK, Africa, Asia, Middle East and Australasia.
The first audio codec produced was a POTS codec called the Patriot, which was the first in the world able to send 15kHz CD quality audio over a regular phone line. The company won numerous awards for its codec range and became better known to its customers for the brand Tieline than its name AVC. In 2002, having successfully secured www.tieline.com and relevant trademarks, AVC became Tieline Technology.
The company now focuses on IP audio codec solutions that include broadcasting over wireless 3G
and 4G
broadband
networks and can multicast
and multiple unicast
audio streams across all types of IP audio networks. In 2010 Tieline became the first company to create an IP audio codec
application to run on the Apple Inc. iPhone
.
IP Audio Broadcasting and SIP (Session Initiation Protocol
Tieline Technology has committed considerable resources to educating television and radio broadcasters about IP audio generally, broadcasting IP audio over wireless IP audio technologies, as well as how to reliably send internet IP audio over Ethernet. The company has worked closely with the EBU, broadcasters and IP codec manufacturers to introduce broadcast standards for audio interoperability over IP according to EBU N/ACIP Tech 3329. The integration of Session Initiation Protocol
(SIP) into IP codecs has been central to achieving this objective and Tieline codecs were amongst the first to trial and integrate SIP reliably.
IP audio. Tieline and other Group members collaborate on interoperability when developing new audio over IP enhancements and have made recommendations to the European Broadcasting Union
regarding IP audio codec
standards.
range and has also developed proprietary audio and video management systems for broadcast and surveillance industries around the world.
equipment to create printed circuit board
s (PCBs) to military specifications.
Indianapolis
Indianapolis is the capital of the U.S. state of Indiana, and the county seat of Marion County, Indiana. As of the 2010 United States Census, the city's population is 839,489. It is by far Indiana's largest city and, as of the 2010 U.S...
in the USA (Tieline America LLC) and in Perth
Perth, Western Australia
Perth is the capital and largest city of the Australian state of Western Australia and the fourth most populous city in Australia. The Perth metropolitan area has an estimated population of almost 1,700,000....
, Western Australia
Western Australia
Western Australia is a state of Australia, occupying the entire western third of the Australian continent. It is bounded by the Indian Ocean to the north and west, the Great Australian Bight and Indian Ocean to the south, the Northern Territory to the north-east and South Australia to the south-east...
(Tieline Pty Ltd). The company has a wide and established distribution network throughout Europe, the Americas and Australasia. Tieline develops a range of broadcast audio codecs that are sold to television and radio networks around the globe. All Tieline codecs are IP codec
IP codec
-IP Video Codecs:IP video codecs are used widely in security and broadcast applications to send video between two locations. Video codecs use compression algorithms to send good video quality at substantially lower bit rates than uncompressed signals. Broadcast applications often use MPEG-2 and...
s, ISDN codecs, POTS codec
POTS codec
A POTS codec is a device used in broadcast engineering to send high-fidelity digital audio over regular telephone lines. A hardware codec, implemented with digital signal processing, is used to compress the audio data enough to travel at a bitrate equivalent to a 33.6k modem...
s, GSM codecs, X.21 codecs and satellite-capable (IP and ISDN) codecs.
Broadcasters use these codecs for remote broadcast
Remote broadcast
In broadcast engineering, a remote broadcast is broadcasting done from a location away from a formal television studio and is considered an electronic field production . A remote pickup unit is usually used to transmit the audio and/or video back to the television station, where it joins the...
s (outside broadcasting
Outside broadcasting
Outside broadcasting is the electronic field production of television or radio programmes from a mobile remote broadcast television studio. Professional video camera and microphone signals come into the production truck for processing, recording and possibly transmission...
), for audio distribution between studios and for studio/transmitter link
Studio/transmitter link
A studio-transmitter link sends a radio station's or television station's audio and video from the broadcast studio to a radio transmitter or television transmitter in another location....
(STL) applications. Tieline codecs are Session Initiation Protocol
Session Initiation Protocol
The Session Initiation Protocol is an IETF-defined signaling protocol widely used for controlling communication sessions such as voice and video calls over Internet Protocol . The protocol can be used for creating, modifying and terminating two-party or multiparty sessions...
(SIP) compatible and Tieline and ten other codec manufacturers have successfully tested IP Interoperability using SIP to connect according to EBU N/ACIP tech 3326 specifications relating to sending audio over IP
Audio over IP
Streaming audio over IP networks is being increasingly used by broadcasting companies, among others, to provide high-quality audio feeds over distance across an IP network such as the Internet. The application is also known as audio contribution over IP in reference to the programming...
.
History
The company was founded in 1981 by John Gouteff and Rod Henderson. In 1981 Television Communications Pty Ltd formed to import and distribute broadcast audio and video products into the Western Australian market. During the next 14 years, TVC achieved major installations into most Television stations, private video organizations and government departments. TVC also developed and manufactured a range of video switching and distribution products.In 1995 TVC became Audio Video Communications (AVC). The growing range of video products expanded heavily into audio products including radio Broadcast Mixing consoles, signal measurement, conversion, and amplification products, which it sold throughout Australasia.
In 1998 AVC identified a growing market for digital audio codec
Audio codec
All codecs are devices or computer programs capable of coding or decoding a digital data stream or signal.The term audio codec has two meanings depending on the context:...
s required to deliver live, studio quality audio over narrow band networks such as analogue telephone and ISDN links. AVC developed a family of world class digital POTS codec
POTS codec
A POTS codec is a device used in broadcast engineering to send high-fidelity digital audio over regular telephone lines. A hardware codec, implemented with digital signal processing, is used to compress the audio data enough to travel at a bitrate equivalent to a 33.6k modem...
s and ISDN codecs. These were branded under the name Tieline and between 1998 and 2001 AVC developed a global distribution network spanning the Americas, Europe, UK, Africa, Asia, Middle East and Australasia.
The first audio codec produced was a POTS codec called the Patriot, which was the first in the world able to send 15kHz CD quality audio over a regular phone line. The company won numerous awards for its codec range and became better known to its customers for the brand Tieline than its name AVC. In 2002, having successfully secured www.tieline.com and relevant trademarks, AVC became Tieline Technology.
The company now focuses on IP audio codec solutions that include broadcasting over wireless 3G
3G
3G or 3rd generation mobile telecommunications is a generation of standards for mobile phones and mobile telecommunication services fulfilling the International Mobile Telecommunications-2000 specifications by the International Telecommunication Union...
and 4G
4G
In telecommunications, 4G is the fourth generation of cellular wireless standards. It is a successor to the 3G and 2G families of standards. In 2009, the ITU-R organization specified the IMT-Advanced requirements for 4G standards, setting peak speed requirements for 4G service at 100 Mbit/s...
broadband
Broadband
The term broadband refers to a telecommunications signal or device of greater bandwidth, in some sense, than another standard or usual signal or device . Different criteria for "broad" have been applied in different contexts and at different times...
networks and can multicast
Multicast
In computer networking, multicast is the delivery of a message or information to a group of destination computers simultaneously in a single transmission from the source creating copies automatically in other network elements, such as routers, only when the topology of the network requires...
and multiple unicast
Unicast
right|200pxIn computer networking, unicast transmission is the sending of messages to a single network destination identified by a unique address.-Addressing methodologies:...
audio streams across all types of IP audio networks. In 2010 Tieline became the first company to create an IP audio codec
IP audio codec
IP audio codecs are used to send broadcast quality audio over IP from remote locations to radio and television studios around the globe. IP codecs are ideal for use in remote broadcasts, as studio/transmitter links or for studio-to-studio audio distribution....
application to run on the Apple Inc. iPhone
IPhone
The iPhone is a line of Internet and multimedia-enabled smartphones marketed by Apple Inc. The first iPhone was unveiled by Steve Jobs, then CEO of Apple, on January 9, 2007, and released on June 29, 2007...
.
IP Audio Broadcasting and SIP (Session Initiation ProtocolSession Initiation ProtocolThe Session Initiation Protocol is an IETF-defined signaling protocol widely used for controlling communication sessions such as voice and video calls over Internet Protocol . The protocol can be used for creating, modifying and terminating two-party or multiparty sessions...
)
Tieline Technology has committed considerable resources to educating television and radio broadcasters about IP audio generally, broadcasting IP audio over wireless IP audio technologies, as well as how to reliably send internet IP audio over Ethernet. The company has worked closely with the EBU, broadcasters and IP codec manufacturers to introduce broadcast standards for audio interoperability over IP according to EBU N/ACIP Tech 3329. The integration of Session Initiation ProtocolSession Initiation Protocol
The Session Initiation Protocol is an IETF-defined signaling protocol widely used for controlling communication sessions such as voice and video calls over Internet Protocol . The protocol can be used for creating, modifying and terminating two-party or multiparty sessions...
(SIP) into IP codecs has been central to achieving this objective and Tieline codecs were amongst the first to trial and integrate SIP reliably.
Audio-via-IP Experts Group
Tieline Technology is a member of the Audio-via-IP Experts Group as a technology provider advising on the interoperability of audio codecs when broadcastingBroadcasting
Broadcasting is the distribution of audio and video content to a dispersed audience via any audio visual medium. Receiving parties may include the general public or a relatively large subset of thereof...
IP audio. Tieline and other Group members collaborate on interoperability when developing new audio over IP enhancements and have made recommendations to the European Broadcasting Union
European Broadcasting Union
The European Broadcasting Union is a confederation of 74 broadcasting organisations from 56 countries, and 49 associate broadcasters from a further 25...
regarding IP audio codec
IP audio codec
IP audio codecs are used to send broadcast quality audio over IP from remote locations to radio and television studios around the globe. IP codecs are ideal for use in remote broadcasts, as studio/transmitter links or for studio-to-studio audio distribution....
standards.
Tieline Research
Tieline Research is one of the Tieline group of companies and it developed the Tieline audio codecCodec
A codec is a device or computer program capable of encoding or decoding a digital data stream or signal. The word codec is a portmanteau of "compressor-decompressor" or, more commonly, "coder-decoder"...
range and has also developed proprietary audio and video management systems for broadcast and surveillance industries around the world.
SMD Assembly
SMD Assembly is one of the Tieline group of companies and provides precision Surface Mount Device assembly services. It uses the latest surface-mount technologySurface-mount technology
Surface mount technology is a method for constructing electronic circuits in which the components are mounted directly onto the surface of printed circuit boards . An electronic device so made is called a surface mount device...
equipment to create printed circuit board
Printed circuit board
A printed circuit board, or PCB, is used to mechanically support and electrically connect electronic components using conductive pathways, tracks or signal traces etched from copper sheets laminated onto a non-conductive substrate. It is also referred to as printed wiring board or etched wiring...
s (PCBs) to military specifications.
External links
- http://www.tieline.com Official Tieline Technology website.
- IP Audio website with audio over IP broadcast information
- http://www.audio-via-ip.com/ Official Audio-via-IP Experts Group website.
- http://www.smda.com.au/ Official SMD Assembly website.
- EBU - Tech 3326 for Audio Contribution over IP
- EBU - Tech 3329 Tutorial on Audio Contribution over IP