What is "tieline"

Tieline Technology has offices in Indianapolis in the United States (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 codecs, ISDN codecs, POTS codecs, GSM codecs, X.21 codecs and satellite-capable (IP and ISDN) codecs.

Broadcasters use these codecs for remote broadcasts ( 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.