NTTN (Nationwide Telecommunication Transmission Network)

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Summary
What is an NTTN? Understand the Nationwide Telecommunication Transmission Network license in Bangladesh and how it impacts your fiber optic connection.

Summary

An NTTN (Nationwide Telecommunication Transmission Network) is a licensed entity in Bangladesh authorized to build, maintain, and lease the physical fiber-optic infrastructure across the country. ISPs and mobile operators rent “dark fiber” or capacity from NTTNs to transport data between cities and neighborhoods.

Overview

Before the NTTN license was created, every ISP and mobile operator tried to lay their own fiber cables, leading to a messy “spiderweb” of overhead wires and frequent road digging. To solve this, the BTRC introduced the NTTN license to centralize the construction of a nationwide fiber backbone.

In simple terms:

  • NTTN: Builds the “highway” (fiber optic cables).
  • ISP: Drives the “truck” (your data) over that highway to reach your home.

Key Players in Bangladesh

There are several major NTTN operators in Bangladesh:

  1. Fiber@Home: One of the two primary private NTTNs.
  2. Summit Communications: The other major private NTTN provider.
  3. BTCL: The state-owned provider with the most extensive legacy reach.
  4. Bahon Limited: A newer entrant in the transmission space.
  5. Power Grid Company of Bangladesh (PGCB): Leases fiber strands that run alongside high-voltage power lines.

Technical Deep-Dive

NTTNs provide two main types of services to ISPs:

  • L2/L3 VPN: The NTTN manages the equipment and ensures the data gets from Point A to Point B.
  • Dark Fiber: The NTTN provides the physical glass strand, and the ISP puts their own equipment at both ends to “light” it.

Under BTRC regulations, ISPs are generally restricted from laying their own long-distance fiber (especially underground) and must use NTTN services for inter-district or inter-thana connectivity.

Bangladesh Context

The cost of internet in Bangladesh is heavily influenced by NTTN pricing. Since ISPs must pay NTTNs to carry data from the IIG in Dhaka to a user in Chittagong or Sylhet, high transmission costs often prevent lower prices in rural areas. Furthermore, most “overhead” cables seen in cities are still “last-mile” fiber laid by ISPs, as NTTNs primarily handle the underground “backbone” and “metropolitan” networks.

FAQ

  • Q: Why can’t my ISP lay its own underground fiber?
    • A: To reduce city-wide digging and clutter, BTRC regulations mandate that only NTTN licensees can build the primary underground transmission infrastructure.
  • Q: Does an NTTN provide internet to homes?
    • A: No. NTTNs are wholesale providers. They only sell services to other licensed operators like ISPs, mobile companies, and cable TV providers.

Related Content

References