rf@wu1.UUCP (11/01/83)
Oops! My apologies. It appears that AT&T does use statistical multiplexing. It's called time averaged speech interpolation (TASI.) However, . . . Our office copy of Notes on the Network (AT&T,1980) indicates that TASI can only be used between Western Electric's Electronic Switching Systems type 4. According to that same volume ESS's are used only at the higher levels of the AT&T network. All those levels are going to AT&T in the divesture. The Bell companies get only the level 5 relay-clackers. So, . . . The local phone companies do not use statistical multiplexing. Its existence does not impact *their* costs at all. Randolph Fritz Western Union Telegraph