First of all, trace the source. The service orientation of the leader determines how you control the cost. If it is a tall enterprise, it is necessary to use the cost control on the tall. Equipment and services should be relatively high-end. On the contrary, we should control the cost and ensure the quality. After all, cost control is not the main evaluation index of IT.
Second, solve the problems one by one:
1. Each project is connected by a dedicated line within the company, and the Internet exit comes from each project, and the cost is recorded in the project.
2, it is best not to go. Can't afford to hurt.
3.voip is a direction, and digital and analog can be mixed to control costs.
4. Hardware extends to professional companies.
5. Consider a private cloud like Kingsoft.
6. You can add a firewall before routing. To control the cost, directly replace the router with a firewall.