| CSTA feature | Description | Yealink SIP-T46G | Snom D385 IP Desktop |
|---|
| MakeCall | Makes phone calls | yes | yes |
| AnswerCall | Answer call | yes | yes |
| ClearConnection | Terminate phone call | yes | yes |
| HoldCall | Hold call | yes | yes |
| RetrieveCall | Retrieve phone call on hold | yes | yes |
| AlternateCall | Switch between the active phone call and the call on hold | (no, emulated via HoldCall + RetrieveCall) | (no, emulated via HoldCall + RetrieveCall) |
| ConferenceCall | Combine the active phone call with the call on hold to create a conference call | yes | yes |
| TransferCall | Connects the active phone call and the call on hold | yes | yes |
| GenerateDigits | Dials DTMF tones | yes | yes |
| DialDigits | Dials the digital tones for a phone call | not supported | yes |
| ConsultationCall | Initiates a callback call | yes | yes |
| SingleStepTransferCall | Transfers an active call blindly | yes | yes |
| DeflectCall | Redirects calls | yes | yes |
| DirectedPickupCall | Picks up a call from another participant | not supported | not supported |
| GetDoNotDisturb | Checks the 'Do Not Disturb' indicator | yes | yes |
| SetDoNotDisturb | Sets the 'Do Not Disturb' indicator | yes | yes |
| GetForwarding | Checks for forwarded phone numbers | not supported | not supported |
| SetForwarding | Sets up call forwarding | not supported | not supported |
| MonitorStart | Starts monitoring the telephone | yes | yes |
| MonitorStop | Stops monitoring the telephone | yes | yes |
| GetSwitchingFunctionDevices | Checks the configured identities | yes | yes |
| SnapShotDevice | Consistency check of a device | yes | yes |
| SnapShotCall | Consistency check of a call | not supported | not supported |
| SystemRegister | Subscribes to notifications of configuration changes | not supported | yes |
| SystemRegisterCancel | Unsubscribes from notifications for configuration changes | not supported | yes |
| RequestSystemStatus | Checks the telephone status | yes | yes |