Which department laid the optical fiber upstairs?

1. Engineering Department. If the optical cable is laid for network coverage, it belongs to the engineering department of the operator (generally under the Ministry of Construction); If it refers to the rubber cable from the optical splitter box to the user's home, it belongs to the network maintenance department of the operator, and most of them are the maintenance personnel of the outsourcing company under their jurisdiction.

2. The home optical fiber is installed by the mobile company, and the new home optical fiber is generally installed by the property mobile company. Fttp refers to broadband telecommunication system.