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ippi is one of the main VoIP provider using SIP technology. ippi is one of the most used VoIP app on iPhone and iPod iTouch.

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

ippi supports iOS4 multitasking to receive calls even when the application is closed and the Retina Display. ippi uses Wi-Fi and 3G 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!

With this application, 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, per second billing from 1st second without connection fees. ippi offers only "Premium" quality call.

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