Home > Term: plesiochronous digital hierarchy (PDH)
plesiochronous digital hierarchy (PDH)
PDH refers to the DS1/DS2/DS3 family of signals which were developed as an asynchronously multiplexed hierarchy for transmission systems which are now more frequently encountered as payload in a SONET system.
- Part of Speech: noun
- Industry/Domain: Telecommunications
- Category: General telecom
- Company: ATIS
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Creator
- KeithC3
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