# Modules

Class 4 Fusion consists of the following modules:

| Modules           | Purpose                                                                                   |
| ----------------- | ----------------------------------------------------------------------------------------- |
| Postgres          | Store all the setting data needed by Class4                                               |
| Python Controller | Provide API interface                                                                     |
| Softswitch        | SIP switch                                                                                |
| Switch Tool       | Handle regular update tasks for the switch                                                |
| Web Helper        | Handle web async job                                                                      |
| Archive Manager   | Handle interaction related to archiving CDR and PCAP to Google Cloud or FTP or disk mount |

These modules should be installed automatically when you deploy using RPM, Docker, AWS image, or Google Cloud Image.