- What server you want to use:
- Standalone (physically server)
- Dedicated Server
- Virtual Machine (AWS,GCP,DO and so on)
- Do you have requirements for OS and related software:
- Debian\Centos\Ubuntu
- Mysql/PostgreSQL
- What Voip trunk you have or how you have connected to voice services:
- I have two trunks with a-z routes and cheap prices.
- What amount of calls you expect
- normal: less 5cps, less: 100 concurrent channels,
- high load: less 20 cps, less 1000 cc,
- highest unlimited cps, unlimited cc,
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