The Opera Phone App is the extension of your company Opera PBX system to the iPhone giving you Fixed Mobile Convergence with Hold and Transfer of calls and presence information for colleagues. Enjoy all the benefits of your secure company PBX from your iPhone.Single number for both fixed and mobile devices.Incoming calls to your fixed desk phone are automatically routed to your iPhone.Incoming calls to the App show the number of the caller, not the PBX.All outgoing calls from your App show the company number, not your mobile number.Make calls from your smartphone contact list or from the company phone directories in the PBX.In either case you present the CLI number of the company PBX.See the status of colleagues in real time.Busy on mobile device status is indicated to other users.Call history - missed calls, received calls, dialled calls.Listen to and manage your business voicemails.The PBX may be programmed to send all your app calls over IP or to the GSM network when you are off site and over Wifi on your LAN.Flip during a call from VoIP to GSM service or the other way, depending on signal qualityThe Opera Phone App uses Voice over IP (VoIP) technology over both Wifi and 3G networks. It may also be programmed to route voice communication over GSM. Be aware that some 3G Service providers may restrict the use of VoIP or charge extra fees for VoIP. If you have any concerns about the use of the Opera Phone App over your 3G carriers network or quality of the available WiFi network, you should use the GSM option for the voice communication.RequirementsA smartphone registration licence activated on the PBXProgram the IP address of the Opera system into the App along with the IP Registration Name and IP Registration PIN. System Manager programming forward the voice and signalling Port Numbers from the modem router to the PBX.