Transcription of SONET/SDH Essentials WHITE PAPER - Exar
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WHITE PAPER . REV. SONET/SDH Essentials . SONET/SDH Essentials WHITE PAPER . Michael Yan Senior Applications Engineer SONET Aggregation and T/E Carrier Applications Group 2008 Exar Corporation XRWP00003. 1. WHITE PAPER . SONET/SDH Essentials REV. TABLE OF CONTENTS. THE BIRTH OF SONET AND SDH .. 2. THE SONET STS FRAMING FORMATS .. 3. TABLE 1: SONET/SDH STANDARD DATA RATES .. 3. THE STS-1 FRAMING FORMAT .. 4. FIGURE 1. THE STS-1 FRAME STRUCTURE .. 4. THE SYNCHRONOUS PAYLOAD ENVELOPE .. 5. FIGURE 2. THE STS-1 SPE (SYNCHRONOUS PAYLOAD ENVELOPE) .. 5. STS-3 FRAMING FORMAT AND HIGHER RATE STS-N .. 6. FIGURE 3. THE STS-3 FRAME .. 6. FIGURE 4. THE STS-3 FRAME AND STS-12 BYTE INTERLEAVING .. 6. FIGURE 5. THE STS-3 FRAME MUX .. 7. FIGURE 6. THE STS-3 FRAME DEMUX .. 8. TABLE 2: SONET/SDH STANDARD DATA RATES .. 8. STS-3C FRAMING FORMAT AND HIGHER RATE 9. FIGURE 7. THE STS-3C 9.
WHITE PAPER 4 REV. 1.00 SONET/SDH ESSENTIALS 2.1 The STS-1 Framing Format The STS-1 frame forms the fundamental building block of the STS-N signals. The STS-1 frame structure is a matrix of 9 byte rows by 90 byte columns as illustrated below in
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