Caller ID Decoder

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Author:

Ed Doering

Subject:

Science and Technology

Institution Name:

Connexions

Collection:

Connexions

Grade Level:

Post-secondary

Abstract:

The telephone company's "Caller ID" service provides the calling party's directory information as well as the time and date of the call as an FSK (frequency shift keying) signal between the first and second rings of a telephone call. In this project, develop a complete Caller ID decoder that analyzes an audio recording of the FSK signal to extract the directory and date information for display.

Course Type:

Learning Module

Languages:

English

Material Type:

Readings

Media Format:

Text/HTML, Downloadable docs

Conditions of Use:

Creative Commons Attribution 2.0