Grandstream Networks GHP6 Series Administration Manual page 32

Setup Completed Configures the Action URL to send when phone finishes setup process.
Registered Configures the Action URL to send when phone successfully registers as a SIP account.
Unregistered Configures the Action URL to send when phone unregisters a SIP account.
Register Failed Configures the Action URL to send when phone fails to register a SIP account.
Idle to Busy Configures the Action URL to send when the phone's state changes form idle to busy.
Busy to Idle Configures the Action URL to send when phone's state changes from busy to idle.
Auto Provision
Configures the Action URL to send when phone's auto provision process is completed.
Completed
IP Change Configures the Action URL to send when the IP address changes.
Off-hook Configures the Action URL to send when phone is in off-hook state.
On-hook Configures the Action URL to send when the phone is on-hook state.
Incoming Call Configures the Action URL to send when the phone receives an incoming call.
Outgoing Call Configures the Action URL to send when phone places a call.
Missed Call Configures the Action URL to send when phone has a missed call.
Established a Call Configures the Action URL to send when phone establishes a call.
Terminated Call Configures the Action URL to send when the phone terminates a call.
Answered Call Configures the Action URL to send when phone answers an incoming call.
Blind Transfer Configures the Action URL to send when the phone performs blind transfer.
Attended Transfer Configures the Action URL to send when the phone performs attended transfer.
Transfer Completed Configures the Action URL to send when the phone successfully transfers a call.
Transfer Failed Configures the Action URL to send when the phone fails to transfer a call.
Hold Call Configures the Action URL to send when the phone places a call on hold.
Unhold Call Configures the Action URL to send when the phone resumes the call on hold.
Mute Call Configures the Action URL when the phone mutes a call.
Unmute Call Configures the Action URL when the phone unmutes a call.
Phone Status
Call Operation