N3306 User manual第 24 页Select Phonebook to enter phone book screen, and implement the corresponding operation, whichfacilitates to search a phone number during the dialing.Select Create SMS to enter new short message screen and complete the corresponding operation (referto section 8.2.When dialing the extension, after hearing the prompt voice of the other side, tap or press camerakey to dial panel for dialing the extension number, and only extension number displays on the screen. Whenextension dialing completed, tap Back to display the number of switchboard.During the talking, tap Speaker to talk in handfree,at this moment, Speaker becomes Receiver,tapReceiver to resume the normal talking。If a new call comes during the conference talking, please refer to section 2.4.4 for processing.2.5 Emergency callIn any country using the digital GSM network, if your phone is within the area covered by network (itcan be aware by checking network signal intensity on top right corner of screen.), you can call the emergencyservice. if your phone is within the area covered by network, you can make an emergency call even you havenot SIM card.”911” is a standard emergency number of GSM, which can be used in any GSM network ofthe world.