![]() ![]() Most softphone clients run on the open Session Initiation Protocol (SIP) supporting various codecs. ![]() Softphones are client devices for making and receiving voice and video calls over the IP network with the standard functions of most original telephones and usually allow integration with VoIP phones and USB phones instead of using a computer's microphone and speakers (or headset). For residential markets, voice over IP phone service is often cheaper than traditional public switched telephone network (PSTN) service and can remove geographic restrictions to telephone numbers, e.g., have a PSTN phone number in a New York area code ring in Tokyo.įor businesses, VoIP obviates separate voice and data pipelines, channelling both types of traffic through the IP network while giving the telephony user a range of advanced abilities. App cannot be installed on iPad, iPod Touch.This is a comparison of voice over IP ( VoIP) software used to conduct telephone-like voice conversations across Internet Protocol (IP) based networks. ![]() Operating system support Operating system support for messaging clients Skype Technologies, a subsidiary of Microsoft Corporation Umpteen, both open protocols and interfaces with proprietary messengersġ.1.4 (fork took over development, now at 3.0.15) ![]() Linux, Microsoft Windows, macOS, Android, iOS MIT license binary, AGPLv3 for source code, Apache-2.0 for admin tools and config files May 15, 2013 10 years ago ( ) (as Google Hangouts) ( peer-to-peer over Bluetooth, WiFi, or Tor network) The following table compares general and technical information for cross-platform instant messaging clients in active development, each of which have their own article that provide further information. Clients that use the same protocol can typically federate and talk to one another. The landscape for instant messaging involves cross-platform instant messaging clients that can handle one or multiple protocols. ![]()
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