What is VoIP?
Voice over Internet Protocol (VoIP), is a collection of technologies that allow people to communicate (voice, fax, SMS, voice-messaging) over the internet rather than through the dedicated public switched telephone network (PSTN), and is the direction in which all communication is travelling.
Save Money by Using Apps to Make Calls and Send Texts
How do you get around paying over the odds for for your calls and texts from you carrier? Use an app.
O2 Launches Tu Go App to Make/Receive Calls and Texts via WiFi
O2 releases the Tu Go app for iOS, Android, and Windows (desktop) to free users from a single device and bring your phone number to multiple screens
