36Call functions1. Press [ ] to answer the call. The first call isautomatically put on hold.2. Press <Swap> to switch between the calls.3. Press <Options> and select End held call to endthe call on hold.4. To end the current call, press [ ].Using the Speakerphone featureUse the speakerphone feature to talk and listen withthe phone a short distance away.Press [ ] to activate the Speakerphone feature.Press the key again to switch back to the earpiece.Using In-call optionsPress <Options> to access the following optionsduring a call:• Voice clarity on/Voice clarity off: increase themicrophone’s sensitivity so that the other personon the phone can hear you more clearly eventhough you may be whispering.• Mute/Unmute: switch off the phone's microphoneso that the other person on the phone cannot hearyou, or switch it back on.• Phonebook: access the contact list.• Mute keys/Send keys: switch the key tones onor off.• Send DTMF: send the DTMF (Dual tone multi-frequency) tones as a group. The DTMF tones arethe tones used in phones for tone dialling,sounding when you press the number keys. Thisoption is helpful for entering a password or anaccount number when you call an automatedsystem, like a banking service.• Message: read an incoming message and send anew message.p. 56• Switch to headset/Switch to phone: switch thecall to a Bluetooth headset or hands-free car kit orback to the phone.To communicate with answering machines orcomputerised telephone systems, Send keysmust be selected.