Plesiochronous Digital Hierarchy
GPTKB entity
Statements (84)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
digital transmission technology
|
| gptkbp:abbreviation |
gptkb:PDH
|
| gptkbp:category |
Multiplexing
Telecommunications standards Digital signal hierarchy |
| gptkbp:characteristic |
signals are nearly but not exactly synchronized
|
| gptkbp:developedBy |
1960s
|
| gptkbp:formerName |
gptkb:SDH
gptkb:SONET |
| https://www.w3.org/2000/01/rdf-schema#label |
Plesiochronous Digital Hierarchy
|
| gptkbp:limitation |
difficult to extract lower order channels
|
| gptkbp:multiplexes |
E-carrier signals
T-carrier signals |
| gptkbp:replacedBy |
gptkb:SDH
gptkb:SONET gptkb:Synchronous_Digital_Hierarchy |
| gptkbp:standardizedBy |
gptkb:ITU-T_G.783
gptkb:ITU-T_G.703 gptkb:ITU-T_G.704 gptkb:ITU-T_G.798 ITU-T G.705 ITU-T G.732 ITU-T G.733 ITU-T G.734 ITU-T G.735 ITU-T G.736 ITU-T G.737 ITU-T G.738 ITU-T G.739 ITU-T G.742 ITU-T G.751 ITU-T G.752 ITU-T G.753 ITU-T G.754 ITU-T G.755 ITU-T G.756 ITU-T G.757 ITU-T G.758 ITU-T G.759 ITU-T G.760 ITU-T G.761 ITU-T G.762 ITU-T G.763 ITU-T G.764 ITU-T G.765 ITU-T G.766 ITU-T G.767 ITU-T G.768 ITU-T G.769 ITU-T G.770 ITU-T G.771 ITU-T G.772 ITU-T G.773 ITU-T G.774 ITU-T G.775 ITU-T G.776 ITU-T G.777 ITU-T G.778 ITU-T G.779 ITU-T G.780 ITU-T G.781 ITU-T G.782 ITU-T G.784 ITU-T G.785 ITU-T G.786 ITU-T G.787 ITU-T G.788 ITU-T G.789 ITU-T G.790 ITU-T G.791 ITU-T G.792 ITU-T G.793 ITU-T G.794 ITU-T G.795 ITU-T G.796 ITU-T G.797 ITU-T G.799 |
| gptkbp:usedFor |
multiplexing digital signals
|
| gptkbp:usedIn |
telecommunications
|
| gptkbp:bfsParent |
gptkb:Synchronous_Digital_Hierarchy
gptkb:Synchronous_Optical_Networking gptkb:Time_Division_Multiplexing gptkb:PDH |
| gptkbp:bfsLayer |
7
|