To make a call with your Nokia Bluetooth Stereo Headset BH-905, use your mobile device in the normal way when the headset is connected to it.
To redial the number you last called (if your mobile device supports this feature with the headset), when no call is in progress, press the multifunction key twice.
To activate voice dialling (if your mobile device supports this feature with the headset), when no call is in progress, press and hold the multifunction key for about 2 seconds until the mobile device startsvoice dialling, and proceed as described in the user guide of your mobile device.
To answer or end a call, press the multifunction key, or use the keys of the mobile device. To reject a call, press the multifunction key twice quickly.
To mute or unmute the microphone during a call when using Bluetooth connectivity, press and hold the play/pause key for about 2 seconds.When the microphone is muted, the Bluetooth indicator light flashes blue twice every 5 seconds.
To switch a call between the headset and your connected device when using bluetooth connectivity, press and hold the multifunction key for about 2 seconds.
To switch a call from the headset to the connected device when using the audio cable, disconnect the CA-143U cable from the headset. To switch the call back to the headset, reconnect the cable.