Options during a call55Muting or sending key tonesThese options allow you to turn the key tones off oron. If the Mute keys option is selected, your phonedoes not transmit the DTMF (Dual Tone Multi-Frequency) tones of the keys, which allows you topress keys without hearing annoying key tonesduring a call.Note: To communicate with answering machines orcomputerised telephone systems, the Sendkeys option must be selected.Sending a sequence of DTMF tonesYou can send the DTMF tones as a group afterentering the entire number you need to send.This option is helpful for entering a password or anaccount number when you call an automatedsystem, like a banking service.To send the DTMF tones:1. While connected to the teleservice system, pressthe key or Options soft key.2. Press the Down key to highlight the Send DTMFoption.3. Press the key or OK soft key.4. Enter the number you want to send and pressthe key.The tones are sent.