What is the common alternative abbreviated name for a Cannon plug/connector used in professional audio systems?
Phone connector (audio) applications where it is vital that permanent circuits being monitored (bridged) are not interrupted by the insertion or removal of connectors. This same tapered shape used in the 'gauge B' (BPO) plug can be seen also in aviation and military applications on various diameters of jack connector including the PJ-068 and 'bantam' plugs. The more common straight-sided profile used in domestic and commercial applications and discussed in most of this article is known as 'gauge A'. XLR connectors used in much professional audio equipment mate the ground signal on pin 1 first. Phone connectors with three conductors are also commonly
RCA connector applications in the consumer audio world when component high-fidelity systems started becoming popular in the 1950s. However, quarter-inch phone connectors are still common in professional audio, while miniature phone connectors (3.5 mm) predominated in personal stereo systems. The connection's plug is called an RCA plug or phono plug, for "phonograph." The name "phono plug" is sometimes confused with a "phone plug" which may refer to a quarter-inch "phone plug" – Tip/Sleeve (TS) or Tip/Ring/Sleeve (TRS) connector – or to a 4P4C connector used for a telephone (which is often, though incorrectly, called "RJ9", "RJ10", or "RJ22"). The word "phono" in