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ippi is a major operator of Voice over IP using SIP technology.

Following an iOS update, our application may experience display errors. Pending a future update, you can use partners applications that are compatible as Zoiper, Bria or Acrobits.

Our application works only with an ippi account. You can open one for free at and enjoy all our services: virtual number, voicemail, caller ID, dual call, message, presence, conference call, web call back, click-to-call, video call, etc.

ippi supports multitasking to receive calls even when the application is closed and the Retina Display. ippi uses Wi-Fi, 3G and 4G network to make calls on your iPhone, iPod touch2 and iPad, turning your iPhone and iTouch mobile phone into a VoIP phone that can make and receive calls from anywhere, without going through the network of your cellular provider!

You will be able to make free phone calls to other ippi members and to users of other SIP networks. For all other destinations, ippi offers ultra low rates. ippi offers only "Premium" quality call.

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Key Features:
- Supports WiFi, EDGE, 3G
- Support iOS4 multitask
- Support Retina Display
- Support for SIP
- Support Speaker
- Support of DTMF signal
- Support for G711 codec & GSM
- Support for NAT Traversing Stun incorporated
- Managing an alternate port
- Display of Credit
- Direct access to voicemail
- Possibility to put the call on mute
- Possibility to call waiting
- Membership directly from the address book of the iPhone
- Call Number, name or SIP address
- Callback Recent calls
- Manage favorites