8890 User Guide v8 11/30/99 [ 113 ]Reference InformationRemember, to make or receive any calls, the phone must be switched onand be used in a service area that has adequate signal strength.Emergency calls might not be possible on all wireless phone networks orwhen certain network services and/or phone features are in use. Checkwith local service providers.Always ensure that your phone is properly charged before attempting anyemergency calls. If you allow your battery to become empty, you will beunable to receive or make calls, including emergency calls. You must thenwait a few minutes after the charging begins to place any emergencycalls.Making an Emergency Call1 If the phone is not on, switch it on.2 Enter the emergency number for your present location (e.g. 911 orany other official emergency number—emergency numbers vary bylocation).3 PressIf certain features are in use (Keyguard, fixed dialing, restrict calls, etc.),you might first need to turn those features off before you can make anemergency call. Consult this document and your local cellular serviceprovider.When making an emergency call, remember to give all of the necessaryinformation as accurately as possible. Remember that your wireless phonemight be the only means of communication at the scene of an accident—do not terminate the call until given permission to do so.Radio Frequency (RF) SignalsYour wireless handheld portable telephone is a low-power radiotransmitter and receiver. When it is ON, it receives and sends out radiofrequency (RF) signals.8890ug.book Page 113 Tuesday, November 30, 1999 3:39 PM