3CX Softphone is a freeware SIP phone. It can be registered and used to make and take calls from a computer. Only compatible with Windows OS.
3CX Softphone - Download Here
Most any SIP-based devices/software are compatible with the TotalCX Hosted Phone Platform. In general 4 things are needed for SIP Registration on the platform:
- Outbound Proxy
This information is located in the user configuration under the Phones tab, the assigned phone model must be set to Manual or Softphone:
You can utilize this information to manually register any SIP device to the phone system. Take this information into the account settings within 3CX: