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Tele-Communication (Telecom) Terms Glossary and Dictionary
D-Link: Diagonal Link
SS7 Diagonal Link (D-Link) connects a secondary (e.g., local or regional) STP pair to a primary (e.g., inter-network gateway) STP pair in a quad-link configuration. Secondary STPs within the same network are connected via a quad of D-links. The distinction between a "B" link and a "D" link is rather arbitrary. For this reason, such links may be referred to as "B/D" links.
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