Telecom allocates a limited number of lines and ports to each area. Once it is full, it can't be installed, and it can't be installed until the user removes it or a new port.

If you dial the number 10000, they can only find the local direction and connection point. This is a new member of the customer service system. Our company used to have nodes, but the system has been upgraded, and it is still the same. The number 10000 cannot find the port and line number. This must be checked by someone from the installation company.