Labels:text | screenshot | line | rectangle | yellow | parallel | font | number | diagram OCR: 90 hyres 3 hytes 36 bines Sector overhead pretheau Line Figure 1. The payload rate in SONET is somewhat less than the actual data rate because of the struc- ture of a standard STS-1 frame. Three bytes in each row are used for section and line overhead, while the fourth byte is path overhead.
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