Mitel Corporation

Neal Rudolph

Valentin Purits

John R Zabel

Patrick H Casselman

Marshall William Pharoah

Marshall W Pharoah

A telephone dialer for connection to a public switched telephone network (PSTN) and to a station apparatus, for receiving digits dialed from the station apparatus and for adding digits or substituting digits for the dialed digits and for redialing digits to the PSTN wherein the redialed digits are comprised of the dialed and added digits or comprised of substituted digits, the dialer further comprising an adjustable hold circuit for connection to the PSTN during an interval when the redialed digits are being output, for holding a line associated with the PSTN in an offhook condition, the adjustable hold circuit having a load connectable to the PSTN line which is variable with PSTN line voltage at the dialer such as to draw a variable current sufficient to meet predetermined current and voltage criteria of the line at the dialer.

Low power dialer

A low quiescent current draw regulator comprising a low output conductance device for receiving a variable DC input voltage and for providing a first nominal quiescent constant current through a serially connected resistor and a reference diode, and a circuit coupled across the resistor and reference diode for providing a substantially regulated output voltage.

Growing community of inventors

Ogdensburg, NY, United States of America

Neal Rudolph