Ghetem-Mdialler is designed specifically to leverage the iPhones unique capabilities and easy way to make a iPhone voip call by using iPhone devices.
Just download and use without any hassle.
Features:
Making and receiving calls
Call timer
Recent Call
Phone Book (Synchronize with Phone Address Book)
Add contact from App
Local signaling (Dial tone, busy, ring back, etc.)
Redial
Speaker
Mute
Touch Tone
Silence Suppression
Echo Cancellation
Registration Timeout
Proxy Setting
STUN Server
System Requirements:
Supported : iOS 7.0 or later.This Application is optimized for iPhone 5 .
Internet Connectivity: Wi-Fi,3G.