It is produced by the breaking and making of the dial pulse contacts of a calling phone when a digit is dialed. In modulation schemes with more than two states, multiple bits are represented by each state. A technique for squeezing more voice conversations onto a trunk. DSI digitizes speech so it can be cut into slices such that no bits are transmitted when a speaker is silent. As soon as speech begins, bits flow again.
Users can transmit data, digitized voice, facsimile, and video over the systems.
To convert an analog signal to a digital signal. Adjacent nodes must cooperate to accomplish this action. The disassociation or release of a switched circuit between two stations. The dffficulty of associating a precise definition with the term stems from the source of the concept i.e., the programmability of the terminal. DROP - A connection point for a terminal on a line.