By Belledonne Communications SARL
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Linphone is an open source internet phone or Voice Over IP phone (VoIP), compatible with the SIP protocol.
Linphone can be used with a large number of SIP-compatible VoIP service providers.
If you subscribe a VoIP to PSTN (=classic telephony) account to a telecom provider, you can reach everyone that has a "classic" phone line.
Alternatively, linphone.org provides free SIP accounts to make audio & video calls over the internet at no cost.
List of supported features:
-Audio with the following codecs: speex (narrow band and wideband), G711 (ulaw,alaw),ILBC, GSM, SILK, G722, OPUS, AAC-ELD
- Secured call (SIP TLS/SRTP/ZRTP/DTLS)
- Video with the VP8 codec (H264 & MPEG4 on demand )
- AVPF RFC support for network resilience
- Multiple calls
- Audio conferencing
- Address book integration
- Call history
- DTMF (telephone tones) support using SIP INFO or RFC2833
- Text messaging with file attachments
What's New in Version 2.3
- New file transfer with multiple download / upload simultaneously
- Bug fixes
- Category: Social Networking
- Updated: Aug 13, 2015
- Version: 2.3
- Size: 22.7 MB
- Languages: English, Arabic, French, Russian
- Seller: Belledonne communications
- © 2014 Belledonne communications
Compatibility: Requires iOS 6.0 or later. Compatible with iPhone, iPad, and iPod touch. This app is optimized for iPhone 5, iPhone 6, and iPhone 6 Plus.