OPTEL

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.