<communications> (Or CAS, channel associated signaling) Transmission of control signals in the same channel as data. This is commonly used in the {Public Switched Telephone Network} where the same pair of wires carry both voice and control signals (e.g. dialling, ringing). Another example is the use on a computer serial line of Control-S and Control-Q characters for flow control as opposed to {hardware flow control} which would be out-of-band signalling. In digital communications, in-band signalling often uses "bit-robbing" where, for example, one bit in each frame is used for signalling instead of data. This is the reason why a D1 channel in the T-carrier system can only carry 56 Kbps of usable data instead of the 64 Kbps carried by the D0 channel in the E-carrier system. (2007-01-26)

in-band signalling

Band in a Bubble is a TV show that consisted of round-the-clock live broadcasting, during which a band spent an extended period of time inside a "bubble," writing and recording an album. The Band in a Bubble concept was created by Paul Curtis, a band manager, tour promoter, owner of Valve Records, and visual artist based in Australia.