ABSTRACT
This chapter deals with the transmission of high-quality audio by broadcasters prior to, or "upstream" of, actual broadcast—in other words, any point-to-point transmission of audio signals involved in the production of broadcast content. It considers the telco audio interconnections that may be available to broadcasters and examines how they can implement these hookups. The quality metrics of contribution channels are higher than those of distribution channels, that are in turn higher than those of emission channels. One of some popular methods being deployed for broadband Internet connectivity, and which played a role in broadcast audio transport, is the digital subscriber line service. The transmission of data is nothing new to telco advancements in technology have offered ways to reduce the costs and offer new options for digital transport. Audio program circuits are often ordered from telcos not as audio services per se, but simply as digital circuits with appropriate bandwidth for the transmission task at hand.
