Odio

Odio Dialer gives you low cost International calls.
Why choose Odio Dialer?
Odio Dialer lets you make calls to mobile and landline numbers across the globe. Make VOIP calls from mobile phone to any landline or mobile device. The receiver needn't have the app to receive calls. In short, its the easiest, most reliable way to reach out friends and loved ones around the world.
***Please Note**---Odio Dialer is a standalone client-side software VOIP phone application and is not bundled together with a voip service. To make and receive voip calls using Odio, you must subscribe to any SIP based service provider across the globe.
Key features include:
1. Lowest battery usage with highest reliability / stability on google play.
2. Lowest latency of all android,IOS softphones.
3. Exceptional voice quality.
4. Bandwidth normalization.
5. Supports sending of DTMF
6. Bluetooth support.
7. Excellent audio quality, even on older devices.
8. Supports calling over WIFI/EDGE/3G/LTE.
9. SIP stack fully compliant to RFC.
10. Background / multitasking support.
11. Integration with the native android contact list.
12. Speakerphone mute and hold.
13. ZRTP / TLS support for voice encryption
14. Supports g711 (ulaw, alaw), speex, iLBC and gsm codecs
15. STUN Support
***Contact us for whitelabel versions with your logo and company
if you want to build your own solution.
WARNING: using Odio Dialer as a default dialer may interfere with dialing 911 emergency services.