Network synchronization-a challenge for SDH/SONET?

Author

Klein, Michael J. ; Urbansky, Ralph

Author_Institution

Philips Kommunikations Industrie AG, Nuremberg, Germany

Volume

31

Issue

9

fYear

1993

Firstpage

42

Lastpage

50

Abstract

The basic characteristics and requirements of existing networks are summarized, focusing on network synchronization aspects and related parameters. The SDH/SONET-specific pointer-based multiplexing technique is described. It is shown that the need to synchronize the SDH/SONET network elements is not an inherent characteristic of these synchronous networks but rather a result of the generally applied pointer processor implementation. The principles of an advanced pointer processor implementation that is fully compatible with the existing telecommunication environment are outlined. This pointer processor does not require synchronization and, additionally, provides timing transparency. Measurement results demonstrating the feasibility of this approach are presented.<>

Keywords

SONET; synchronisation; synchronous digital hierarchy; SDH/SONET network; measurement results; network synchronisation; network synchronization; pointer processor; pointer-based multiplexing; telecommunication environment; timing transparency; Bit rate; Clocks; Delay; SONET; Stability; Switches; Synchronization; Synchronous digital hierarchy; Telephony; Timing;

fLanguage

English

Journal_Title

Communications Magazine, IEEE

Publisher

ieee

ISSN

0163-6804

Type

jour

DOI

10.1109/35.236269

Filename

236269