1. Optical cable line obstacle statistics 1 The […]
1. Optical cable line obstacle statistics
1 The situation that the quality of the communication is affected by the optical cable line and the use unit agrees to continue to use it is called the state of the optical cable line. The splicing state of the optical cable line is not an obstacle to the optical cable line, but the maintenance unit should try to actively eliminate it. The number of times and the duration and duration (duration) shall be reported to the superior line authority as a basis for analyzing the quality of the optical line and improving the maintenance work.
2 The failure of the business system to switch to the standby system due to the optical cable line, or the obstacles of the backup system and the remote supply system without affecting the communication are not counted as the obstacles of the optical cable line. The maintenance unit of the optical cable line shall actively identify the cause and formulate the repair plan to be implemented after being approved by the superior competent unit. The actual number and duration of optical cable line obstacles should be reported to the superior line authority as a basis for analysis and improvement of maintenance work.
3 The same cable can be used to block the core fiber at the same time. The same service system in the same hop is blocked multiple times at the same time, and the obstacle is recorded once. The actual number of times and the duration of the obstruction of the optical cable line shall be reported to the competent department of the superior line as it is.
4 The optical cable line obscuration duration begins when the system service is blocked, until the optical cable line repair (or reverse) is verified by the transmission station.
2. Obstacle calculation
Cable line barrier calculations include an average of each system T. Meter obstacle count calculation and average daily system kilometer obstacle duration calculation:
Formula 1: Average daily system in meters of obstacles = total number of obstacles (times) / total system length (system kilometers) * 100 (system kilometers)
Formula 2: Average obstacle duration per system kilometer = total obstacle duration (minutes) / total system length (system kilometers) * 100 (system kilometers)
In the formula, the total length of the system refers to the total number of kilometers of the business system in which the cable line under its jurisdiction is in use, and the unit is the system kilometer.
For example, a system uses a 12-core fiber optic cable 80 km, of which 10 cores open 5 service systems, and 2 cores are used as backup systems, and the system length is 5×80=400 system kilometers. When performing obstacle calculations, it is generally required to retain two significant digits after the decimal point.