IEEE Std 802.7-1989 IEEE Recommended Practices for Broadband Local Area Networks.pdf
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1、 IEEE Std 802.7-1989 IEEE Recommended Practices for Broadband Local Area Networks Sponsor Technical Committee on Computer Communications of the IEEE Computer Society Approved 19 October 1989 IEEE Standards Board Approved 9 March 1990 American National Standards Institute Abstract: IEEE 802.7-1989, I
2、EEE Recommended Practices for Broadband Local Area Networks (LANs) specifies the design, installation, and test parameters for a broadband cable medium. The medium supports the communication of IEEE 802.3b, IEEE 802.4, video, and narrow-band radio frequency (RF) modem devices. The broadband bus topo
3、logy consists of amplifiers, coaxial cable, and directional couplers that create a full duplex directional medium. Inbound signals flow from user outlet transmitters to a central headend location. The headend processes the signals and then transmits the signals via an outbound path to all the user o
4、utlets. The medium utilizes frequency division multiplexing (FDM), which supports the simultaneous coexistence of services. Each service is assigned a unique inbound and outbound channel frequency. Authorized licensed use limited to: Tsinghua University Library. Downloaded on December 25,2010 at 12:
5、42:14 UTC from IEEE Xplore. Restrictions apply. IEEE Standards documents are developed within the Technical Committees of the IEEE Societies and the Standards Coordinating Committees of the IEEE Standards Board. Members of the committees serve volun- tarily and without compensation. They are not nec
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13、ndards and requests for interpretations should be addressed to: Secretary, IEEE Standards Board 345 East 47th Street New York, NY 10017 USA IEEE Standards documents are adopted by the Institute of Electrical and Electronics Engineers without regard to whether their adoption may involve patents on ar
14、ticles, materials, or processes. Such adoptions does not assume any liability to any patent owner, nor does it assume any obligation whatever to parties adopting the standards documents. Authorized licensed use limited to: Tsinghua University Library. Downloaded on December 25,2010 at 12:42:14 UTC f
15、rom IEEE Xplore. Restrictions apply. IEEE BROADBAND LOCAL AREA NETWORKSStd 802.4-1989 Copyright 1989 IEEE. All rights reserve d. iii Foreword (This Foreword is not a part of IEEE Std 802.7-1989, IEEE Recommended Practices for Broadband Local Area Net- works.) This recommended practices document is p
16、art of a family of standards for Local Area Networks (LANs). The relationship between this recommended practices document and other members of the IEEE 802 family is illustrated and described below. NoteThe numbers refer to IEEE standards. P802.1 P802.1 describes the relationship among 802 standards
17、 and their relationship to the ISO Open Systems Interconnection Reference Model. This document will contain network management and interconnection standards. 1 802.2IEEE Std 802.2-1989 (ISO 8802-2), logical link control protocol. 802.3ANSI/IEEE Std 802.3-1988 (ISO 8802-3), a bus utilizing CSMA/CD as
18、 the access method. 802.4ANSI/IEEE Std 802.4-1985 (ISO 8802-4), a bus utilizing token passing as the access method. 2 802.5IEEE Std 802.5-1989 (ISO 8802-5), a ring utilizing token passing as the access method. 802.7IEEE Std 802.7-1989, This document provides information pertaining to establishing an
19、d maintaining a broadband cable medium. The purpose for the medium is to transport communications of IEEE 802.3b and 802.4 broadband services. The following participants were members in the Recommended Practices effort of the IEEE Project 802.7 Working Group. Those names followed by an asterisk(*) w
20、ere voting members at the time of approval of Revision 8 of this document: 1 Project currently under development. 2 Publication of this standards revision, IEEE Std 802.4-1990 (ISO 8802-4), is anticipated in the Spring of 1990. Authorized licensed use limited to: Tsinghua University Library. Downloa
21、ded on December 25,2010 at 12:42:14 UTC from IEEE Xplore. Restrictions apply. IEEE Std 802.7-1989IEEE RECOMMENDED PRACTICES FOR iv Copyright 1990 IEEE. All rights reserved . Matt Kaltenback , Chair* Hamid Heidary, Vice Chair* We wish to express our gratitude to Ed Cooper and Jim Montrose, our previo
22、us chairmen (1984-1987); and to David Slim and Jeff Blowers, our previous vice chairmen. Special thanks are due to the late James Berger, who was instrumental in obtaining critical support for this effort. The following persons were on the balloting committee that approved this document for submissi
23、on to the IEEE Standards Board: Rien Baan * Ali Bahrololoomi* James E. Berger Gary Blunch Michael Bush Bruce Carlile * James P. Duffy * Paul Eastman* Donald H. Ebert* Michael A. Felker* Larry Fisher* Norm Friederich* Colin J. Horton* David A. Hostetler Stephen W. Janshego* Walter Kammerer Hiroshi Ko
24、bayashi Bruce Leonard* Lawrence Lockwood Leland M. Long John P. Mollica Patricia Murphy John Noblet* William ONeil* Michael Quelly* Daniel V. Ratner David A. Roos Walter Schreuer* Semir Sirazi David H. Slim Robert Summers Jay Staiger* Wendell Turner Larry Voyer Roger Wilmarth Richard Wilborg William
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