The download button opens the iTunes App Store, where you
may continue the download process. You must have iTunes installed with an
active iTunes account in order to download and install the software. This
download may not be available in some countries.
From Telio Holding ASA:
Bring your home phone with you wherever you go! With Teliophone and a Wi-Fi connection, you can make or receive free phonecalls with your home phone number wherever you are.You can make calls via Wi-Fi, 3G or 4G. The person you are calling does not need to be a Teliophone user for the phone call to be free of charge.Teliophone is an extra service available to all customers with an active Telio/Tellio VoIP subscription. The service costs a small fee per month and will run nicely on all iPhone models with iOS 8 or newer.More information about this service can be found on www.telio.no, www.tellio.dk and www.telio.ch.