Updated Guide to the X Series Recommendations Describes The Latest
Standards for Data Communications

BLUE RIDGE SUMMIT, PA--Every day, vast communications networks transmit
billions of bytes of data around the world. To ensure the systems
compatibility required for this enormous data exchange, the ITU-T X Series
Recommendations for data communications systems and data networks have
been adopted by virtually all manufacturers, vendors, designers, and users
of communications systems worldwide.

Now revised to cover all the latest standards, including X.400 and the new
ITU-T X Series, this second edition of The X Series Recommendations serves
as an authoritative, unique guide to the most commonly used data
communications protocols in the world. Written as both a tutorial and
handy reference, this book describes the detailed technical definitions of
the X Series Recommendations in plain English, making these important
standards much easier to understand and implement. Author Uyless Black
provides clear and complete explanations of:

* Services and facilities--the X.2 facilities and X.1 service classes
* Interfaces--the X.25, X.28, and X.29 PAD protocols, the X.31
  internetworking standard, and the X.32 dial-and-answer, and
  authentication protocol
* Transmission and signaling--X.75 and other key protocols
* The OSI Model--focusing on the X.200 Recommendations
* Internetworking--connecting ISDN, telephone, packet, and satellite
  networks through X.300
* Message handling systems--including a tutorial on all X.400
  Recommendations
* Directory applications--with a complete guide to X.500

About the author:

Uyless Black is founder of the Information Engineering Institute, Linden,
Virginia. A resident of Front Royal, Virginia, he is the author of several
groundbreaking articles and books on computer communications, including
TCP/IP and Related Protocols and The V Series Recommendations, 2nd
Edition.

McGraw-Hill, Inc.
Professional Book Group
Blue Ridge Summit, PA 17294-0850
1-800-233-1128
Fax: 1-800-932-0183

The X Series Recommendations:
Standards for Data Communications, 2nd Edition
Uyless Black
Hard $55.00 - ISBN 0-07-005593-9
Publication Date: April 1995
368 pp., 123 illus., 6 x 9

Available In bookstores or from the publisher (1-800-822-8158)

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