ChaiyoCall enables to make VoIP calls whenever your device is connected to the internet through WIFI or 3G. This app is simple to install and very easy to configure. Featuring a comfortable and simple user interface ChaiyoCall sip client lets your connect your phone to standard landline or mobile phones.
SIP protocol support
Making and receiving calls
Codecs supported: G729, G722, G711,GSM
Phone Book (Synchronize with Phone Address Book)
Add contact from App
Local signaling (Dial tone, busy, ring back, etc.)
Supported : iOS 7.0 or later.This Application is optimized for iPhone 5.
Internet Connectivity: Wi-Fi,3G.