توضیحات:

Hellopak is feature-rich mobile VoIP application for making long distance or international calls at low rates. It is an interesting find for end users who have their friends and families scattered all around the world. The mobile application is available on the widely popular Android. So, end users can easily download the application on their favorite device and use VoIP services to get started.
App Highlights:
-Processes calls even in low bandwidths
-In-built noise and echo cancellation
-G729, PCMU, PCMA codec compatibility
-SIP softswitch compatibility
-Address book integration
-NAT traversal on Private IP
-SIP Signaling
Download Hellopak now to make VoIP calls to your near & dear ones.