What are the functions or functions of the SPC exchange system?

It can be understood that I am working on a weak current system project in a five-star hotel, and I need a program-controlled switch. Its main functions are: subscriber line access, relay connection, billing, equipment management, etc.

1. As long as the user accesses, the internal telephone local area network can be completed.

2, access to municipal communications, you can make long-distance calls.

3. Management. You can control which phones can make local calls and long-distance calls and which can only make internal calls through software.

4. Monitoring billing, such as how long the guests staying in the hotel call, and charging when settling accounts, is realized through program control.