Which transmission equipment is recommended for the communication network in the sub-center during the construction of the expressway section?

Question

Options

• AOSN9800 U32E
• BOSN 1800 IE
• CE6616
• DE6608T

• A
  14% (2)
• B
  7% (1)
• C
  71% (10)
• D
  7% (1)

Explanation

E6616 is the designated transmission device for the sub-center node in expressway section communication networks. It is specifically engineered for mid-tier aggregation roles - matching the capacity, interface density, and reliability requirements of an expressway sub-center - and is the model called out in the relevant engineering standards for this network tier.

Why the distractors are wrong:

• A (OSN9800 U32E): An ultra-high-capacity OTN backbone platform designed for core/hub nodes (e.g., main centers). It is far more than what a sub-center requires and is deployed at a higher tier.
• B (OSN 1800 IE): An access-layer OTN device suited for small sites and edge connectivity, not the aggregation-level sub-center role.
• D (E6608T): A smaller PTN device positioned below the E6616 in the product family; it fits lower-tier or access nodes, not the sub-center.

Memory tip: Think of the hierarchy as main center → sub-center → section. The E6616 sits in the middle of the PTN family - just as the sub-center sits in the middle of the network hierarchy. Bigger (OSN9800) goes up to the core; smaller (E6608T / OSN 1800 IE) goes down to the edge.

No community discussion yet for this question.