Glossary

PDH – Plesiochronous Digital Hierarchy
# A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

PDH – Plesiochronous Digital Hierarchy

A common standard utilized throughout the world to multiplex digital information. Due to limitations such as lack of flexibility and performance it has been superseded in many areas by SDH (Synchronous Digital Hierarchy).


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