O'Reilly logo

Online! The Book by Wendy Taylor, Chris Pirillo, John C. Dvorak

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

Standards and Protocols

Today, there are a number of industry standards that allow equipment from one manufacturer to communicate with equipment from another manufacturer. Telecommunications standards include Bell and ITU-T. The Bell standards (for example, Bell 103 and Bell 212A) have been followed primarily in the United States and are, relatively speaking, obsolete. The ITU-T (International Telecommunications Union Telecommunication Standardization Sector), formerly known as CCITT, covers international standards followed worldwide. All the standards prefixed with “V” are ITU-T standards. For example, the latest modulation scheme is V.92.

Standard ...

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