Specifications

reconfiguresitselftotheappropriatestateandrestorestheconnectionto3CX PhoneSystem.The
sametechnologyisusedwhenthe3CXPhoneislaunchedfroma“terminated”state.
Note for Android users to save battery: If the user presses the “Home” button, 3CXPhone
remainsrunninginthebackground.ThiswillconsumemorebatterybecauseaWiFiormobiledata
network connection must be kept alive. To avoid this, close the application by using the method
usedbyyourphonetocloserunningapplications.3CXPhone Systemwillthenwakeup3CXPhone
usingthe3CXPushservice.
Configuring3CXPhoneforiPhone
3CXPhone for iPhone is also automatically configured to be used as a remote extension. No
configuration at all is required. Just like Android, as soon as the user changes a network and
3CXPhonedetectsthatitisnotonthesamenetwork as3CXPhoneSystem,3CXPhoneforiPhone
willswitchtoOutofOfficemodeandconfigureitselfasaremoteextensionandreregister“onthe
fly”.
In most cases 3CXPhone for iPhonewill connect withoutproblems. However, if there are issues,
thenyoumust:
1. Download3CXVoIPTunnelfromtheAppleAppStore.
2. Launchthe3CXTunnelapp.
3. Inthe“RemoteTunnelIP”fieldenterthepublicIPofthe3CXPBX.
4. Insertthetunnelport(usually5090)inthe“RemoteTunnelPort”field.
5. Enterthe“RemoteTunnelPassword”(asconfiguredbytheadministratoron3CXPhone
System).
6. Click“Start”.
7. Switch back to 3CXPhone for iOS and go to “Settings” > “Accounts” > Select the
appropriateaccount>Scrolldownandset"Use3CXTunnel"to“ON”.
8. Placeyourcall.
Note:AccordingtoAppleiOSappstandards,everytimeyoupressthehomescreenbutton,andthe
applicationgoestothebackground,3CXPhoneforiPhonewillgointobackgroundmodeandmust
unregister.3CXTunnelwillgointhebackgroundaswell andwillremainactivefor10minutes.After
10minutes,3CXTunnelwillbeterminatedbyiOS.ThisisaniOSstandardproceduretopreserve
battery life. For this reason the 3CX Tunnel app should only be used when experiencing issues
placingoutboundcalls.Whenyourcallisdone,3CXTunnelshouldbeturnedoff,as tonotinterfere
with3CXPushnotifications.
Toplaceacallusing3CXTunnel:
1. Launch the 3CX Tunnel app, and confirm that it is started and connected. If the status is
"Stopped"clickon“Start”andwaituntilthestatuschangesto"Connected".
2. Launch3CXPhoneandafterasuccessfulregistration,proceedandmakeyourcall.