Network Infrastructure Sharing(passive) describes the process by which network operators share infrastructure such would be ducts, manhole, telecom poles, etc., to deliver a telecom service to end users.

Infrastructure sharing is an effective way to lower the cost of deploying networks to achieve widespread and affordable access to broadband.
Infrastructure Sharing can play an important role by promoting competition, reducing the cost of network.
Furthermore, Infrastructure Sharing plays an essential role facilitating environmental protection, reducing resource consumptions, enhancing user's choice.

Network, Infrastructure Sharing Center(NISC) provides an online system containing up-to-date information on builing's permits for the incoming telecom duct line of the joint construction among network operators.
Using this online system, network operators can choose either participate the joint construction or not.
NISC seeks to contribute to the efforts of the Cross-sector infrastructure sharing including new road construction, railways, utility poles, sewage pipes.