Abstract: Configuring a telepoint base station 101 having base station channels 105, 110 and 115 that are coupled to a public switched telephone network 103 via subscriber channels 120, 125 and 130 by, determing the subscriber channel IDs affiliated with the subscriber channels 120, 125 and 130, and storing the subscriber channels IDs in memory 102. Subsequently, using the subscriber channel IDs to determine which of the subscriber channel IDs 120, 125 and 130 is a group ID for the telepoint base station, and storing the group ID.

Abstract: An improved detection arrangement for detecting the presence of a given tone in a received input signal. A reference generator, in the form of a reference clock and a programmable divider, produces a first reference frequency, equal to the frequency of the tone, and at an arbitrary phase angle thereto. A second generator output is in quadrature to the first. Each reference signal is product detected with the input signal via exclusive OR gates.A unique digital low pass filter, operating in a time multiplex mode, receives the gate outputs, removes all high frequency components therefrom, and produces pairs of output binary number encoded signals, each of which is representative of a vector component of a detected tone. Threshold detector circuitry monitors the outputs indicating an above threshold condition at its output in response to predetermined combinations of the binary numbers. The combinations represent all input vectors whose resultant absolute magnitude exceeds a chosen threshold.