Issue 1
December 1997
A-1
A
A SONET Overview
A
Overview
0
This section briefly describes the Synchronous Optical Network (SONET).
History
0
In the early 1980's, the American National Standards Institute (ANSI) recognized
the need for an optical signal standard for future broadband transmission. The
ANSI T1X1 subcommittee began working on optical signal and interface
standards in 1984. In 1985, Bellcore proposed a network approach to fiber
system standardization to T1X1. The proposal suggested a hierarchical family of
signals whose rates would be integer multiples of a basic modular signal. The
proposal further suggested a synchronous multiplexing technique, leading to the
coining of the term
Synchronous Optical NETwork (SONET).
The International Telephone and Telegraph Consultative Committee (CCITT) first
showed interest in 1986. Conferences held through 1987 and 1988 resulted in
coordinated specifications for both the American National Standard (SONET) and
the CCITT-International Standard, Synchronous Digital Hierarchy (SDH). Approval
of both sets of standards occurred in late 1988.
Содержание DDM-2000 OC-12
Страница 1: ...363 206 295 Issue 1 December 1997 DDM 2000 OC 12 Multiplexer Release 7 0 User Service Manual Volume I ...
Страница 37: ...Tables xxxviii Issue 1 December 1997 A A SONET Overview A 1 SONET Payloads A 18 A 2 SONET Transport Rates A 19 ...
Страница 506: ...INS PROG 8 of 8 Page INS PROG COMMANDS RELATED rtrv eqpt rtrv ne OC 12 DDM 2000 1997 December 1 Issue 11 89 ...
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Страница 565: ...RTRV OC3 3 of 3 Page RTRV OC3 COMMANDS RELATED rtrv sync 11 148 1997 December 1 Issue OC 12 DDM 2000 ...
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Страница 766: ... Ctl T TOGGLE 2 of 2 Page Ctl T TOGGLE COMMANDS RELATED logout rlgn OC 12 DDM 2000 1997 December 1 Issue 11 349 ...
Страница 847: ...Multiplexer OC 12 DDM 2000 7 Release TARP TOP Manual User Service II Volume 363 206 295 1 Issue 1997 December ...
Страница 867: ...363 206 295 TOP Maintenance and Operation BLANK LEFT INTENTIONALLY PAGE THIS 12 1997 December 1 Issue ...
Страница 1145: ...Order Circuit 363 206 295 NTP 029 1 of 1 Page 1997 December 1 Issue Unused LISTED ORDER IN BELOW ITEMS DO TO GO DETAILS FOR ...
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Страница 1456: ...363 206 295 DLP 523 7 of 7 Page 1997 December 1 Issue OC 12 via Access Broadcast Video for Cross connections of Example 4 Figure ...
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Страница 1565: ...363 206 295 DLP 543 6 of 5 Page 1997 December 1 Issue Network Broadcast Video of Test Transmission 2 Figure ...
Страница 1566: ...DLP 543 363 206 295 1997 December 1 Issue 6 of 6 Page Network Ring Virtual ATM of Test Transmission 3 Figure ...