For the subsystem, you can use hardware or virtual machines with the following specifications:
| Subscriber base | Active users of WiFi Calling | vCPU, cores | RAM, GB | HDD, GB | NIC, Mbps |
|---|---|---|---|---|---|
| 5000 | 650 | 4 | 8 | 100 | up to 10 |
| 10000 | 1300 | 4 | 12 | 100 | up to 100 |
| 50000 | 6500 | 24 | 16 | 100 | up to 1000 |
| 100000 | 13000 | 32 | 32 | 100 | up to 1000 |
| 1000000 | 130000 | 48 | 64 | 100 | up to 10000 |
| > 1000000 | on request | ||||