Configures the "#" or "*" key as the send key.
If it is set to 0 (Disabled), neither “#” nor “*”
can be used as a send key.
If it is set to 1 (# key), the pound key is used as
the send key.
If it is set to 2 (* key), the asterisk key is used as
the send key.
Enables or disables the IP phone to play a
tone when a user presses a key.
If it is set to 1 (Enabled), the IP phone will play
a tone when a user presses a key.