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System for aligning transmission facility framing bits to the sonet H4 multiframe indicator byte
System for aligning transmission facility framing bits to the sonet H4 multiframe indicator byte
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机译:用于将传输设施成帧位与sonet H4多帧指示符字节对齐的系统
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摘要
A system for aligning framing bits from independent digital transmission facilities with framing of a higher transmission rate facility includes a RAM memory. Received framing bits from the independent digital transmission facilities are stored at RAM locations in accordance with multiframe addresses of the framing bits relative to the multiframe format of the independent facility. Multiframe indicator bytes indicative of the framing of the higher transmission rate facility are used as addresses to read framing bits from RAM. The multiframe address of the independent digital transmission facilities is established by a counter for each independent facility, said counter being synchronized to the framing of the independent facility and incremented to provide addresses identical to the multiframe indicator bytes of the higher transmission rate facility.
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