Linphone
Linphone is an open source SIP client for HD voice/video calls, 1-to-1 and group instant messaging, conference calls etc. Available for iOS, Android, Windows, macOS and GNU/Linux.
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Functions of Linphone
Instant Messaging
Instant Messenger
Messenger
Screen Sharing
Mobile App
Call
Contact Sharing
Gmail Integration
Voice Calls
H323
H323 Protocol
Internet Phone
Block Callers
Call From An Email
Conference Calls
Create Hangouts
Do Not Disturb
Forum Support
International Calling
Keyboard Shortcuts
Log Calls
Low Cost
Number Porting
One Number
Personalized Greetings
SMS
SMS To Email
Screen Callers
Share Voicemails
Voicemail Transcription
Video Tutorials
Talk
Telephoning Software
VOIP
VoIP Application
Voice Messages
SIP
SIP Protocol
Telephony
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