OPTEL is the robust mobile application for experiencing high-end VoIP calling at low rates. OPTEL is available on Android. End users who are frequently required to make long distance or international calls will find it cost-effective and reliable. The mobile application has intuitive UI with many user-friendly features making it the best choice for end users. It works well with all SIP standard softswitches.
What’s exciting?
Low bandwidth consumption
G729, PCMU, PCMA codecs
Crystal clear voice quality
Address book integration
Jitter buffer implementation
NAT traversal on Private IP
SIP softswitch compatibility
Download OPTEL now and experience high quality VoIP calling.
9Apps 4.9
