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Overview:

SONET stands for Synchronous Optical NETwork. The SONET format allows different types of formats to be transmitted on one line. SONET is a long term solution for a mid-span-meet between vendors. The other major advantage is that SONET allows ADDING and DROPING signals with a single multiplexer. Communication between various localized networks is costly because differences in digital signal hierarchies, encoding techniques and multiplexing strategies. For example, the DS1 signals consist of 24 voice signals and one framing bit per frame. It has a rate of 1.544 Mbps. DS1 uses the AMI encoding scheme, it robs a bit from an eight bit byte for signaling.

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Date:Jan 2003
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