Patent ID: 7643619
Filing Date: 2010-01-05
Classification: G08B,H04M

Abstract:
1. A method of performing a Teletype/Telecommunications Device for the Deaf (TTY/TDD) service in a wireless terminal, the method comprising the step of: changing all notice modes of the wireless terminal to a vibration mode when a user selects a TTY/TDD service mode by using a keypad; transmitting a call connection request signal if the user inputs a called party number and call key, and outputting a call connection request message together with an established first vibration to a TTY/TDD service window according to the call connection request; outputting a call ready message together with a second vibration different from the first vibration to the TTY/TDD service window if a call connection is performed after transmitting the call connection request message; and outputting an absence message together with a third vibration different from the first and second vibration to the TTY/TDD service window if a call connection is not performed after transmitting the call connection request message.