What is the average lifespan of direct buried and aerial cables?

The average lifespan of direct buried and aerial cables is typically around 30 years. This lifespan can be influenced by several factors, including the quality of the cables, environmental conditions, and the specific installation practices used. Cables that are directly buried tend to have a protective outer sheath that helps prevent damage from moisture, soil conditions, and other environmental factors, which can extend their lifespan. Aerial cables, on the other hand, are exposed to weather elements, but advancements in materials and manufacturing have allowed these cables to withstand various conditions for many years.

Cables exceeding 30 years can still be in operation, but they may start to experience a decline in performance or may not meet newer technology standards. Understanding this average lifespan assists OSP designers in planning for maintenance, upgrades, and replacements in network infrastructure, ensuring reliability and performance over time.