O'Reilly logo

Fundamentals of Information Systems Security by Michael G. Solomon, David Kim

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

Chapter 2. Changing How People and Businesses Communicate

THE TELEPHONE REVOLUTIONIZED COMMUNICATION. Its impact foreshadowed the coming computer revolution. As telephones became more and more common, appearing in nearly every home and workplace, they became the way to communicate. Indeed, until the mid 1980s, personal and business communications involved three primary tools:

  • Telephone—Used for real-time voice communications between people

  • Answering machines and voice mail—Critical for store-and-forward voice messaging and retrieval

  • Fax—Real-time data transmission of documents through analog phone lines

In the 1980s, telephones began to evolve from their analog origins into digital devices. Telephone and voice-mail systems became digital. Then the ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required