Efficient, Accurate Measurement of Three-Second Average Energy
Original Publication Date: 1986-Jul-01
Included in the Prior Art Database: 2005-Mar-09
A method is described to squelch signals being supplied to telephone lines that would violate Federal Communications Commission (FCC) Regulation Part 68 which requires that the average energy transmitted to a telephone line not exceed certain energy bounds. One of these requirements is that any signal other than telephone dialing or live voice must produce a three-second average energy less than -9 dBm. The restriction for telephone dialing is that the three-second average must be less than 0 dBm. There is no restriction for live voice. Where there are a number of sources of signals to be transmitted to the telephone line, there is not a prior assurance that most of these will be pre-limited to meet the FCC requirement.