Baklan

Free

Main features: - HD audio and rich codec support: Opus, SILK, G.729, G.711, Speex, iLBC, GSM - Echo cancellation - Microphone gain and speaker volume adjustments - Secure communication with TLS and Secure RTP (SRTP) or ZRTP encryption protocols - Push notifications for incoming calls to improve your battery life - Support for NAT traversal using ICE with STUN or TURN protocols - Support for multiple SIP accounts - Presence using the SIMPLE standard with generic SUBSCRIBE/NOTIFY and PUBLISH messages - Very intuitive UI - Contact list integrated with primary account contact list - Detailed call list and history - Integrated billing information including balance, call rates, charges and payments - Easy balance top-up using Google Play - Account wizard to create or restore SIP account at any VoIP provider Can be used with any SIP provider - Application debugging

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