Is it possible to use the LCD display of a phone as well as the extra buttons that correspond to the screen with an Asterisk system?
For example: On a meredian system with nortel phones one can fast forward, rewind or stop a message being played on their voicemail. While in a message the LCD displays the message date and time, too.
My question is for new IP phones and not the phones mentioned above in the example.
If this is done, where can I read details about how to do it?