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Time-assignment Speech Interpolation




''Note:'' TASI works by switching additional users onto any Channel temporarily idled because an original User has stopped speaking. When the original user resumes speaking, that user will, in turn, be switched to any channel that happens to be idle. The speech detector function is called Voice Activity Detection .

Source: From Federal Standard 1037C and from MIL-STD-188

TASI was invented by Bell Labs in the 1960s to increase the capacity of Transatlantic Telephone Cable s. It was one of their first applications requiring Electronic Switching of voice circuits.

Later Digital Circuit Multiplication Equipment included TASI as a feature, not as distinct hardware.