Title :
Call Progress System for Provision of Calling Tones and Ringing Power
Author :
Wuorinen, J.H. ; Kinsel, T.S.
Author_Institution :
Bell Laboratories, Whippany, New Jersey
Abstract :
A Call Progress System generating telephone calling tones and ringing power with a high degree of flexibility is described. It has a multi-microcomputer architecture and is personalized for a particular application by use of a ROM.
Keywords :
Baseband; Communication system control; Control systems; Frequency conversion; Low pass filters; Power generation; Power harmonic filters; Read only memory; Sampling methods; Telephony;
Conference_Titel :
Telecommunications Energy Conference, 1979. INTELEC 1979. International
Conference_Location :
Washington, DC, USA
DOI :
10.1109/INTLEC.1979.4793677
