Clare's family of Call Progress Detectors and Generators provide an inexpensive method of detecting and generating common call progress tones including busy tone, dial tone, call waiting tones and others. The family includes both an inexpensive band detector and precise call tone detectors that detect individual tones. Detectors are available in both DIP and SOIC packages and operate on either 3 or 5 volt supply packages. The call progress generator allows for a simple method of providing dial tone busy tone and other call progress tones in applications where a POTS interface is required such as VOIP or other network gateways.