Telephone (application) explained

Telephone
Developer:	64 Characters
Programming Language:	Objective-C, Swift
Operating System:	macOS
Language:	English, German, Russian
License:	2016: GPL-3.0-or-later^[1] 2008: BSD-3-Clause^[2]
Website:	www.64characters.com/telephone

Telephone is a softphone for macOS developed by 64 Characters. It uses Session Initiation Protocol for communication. Telephone is distributed as free software under the GPL-3.0-or-later license.

Audio codecs

• Speex/8000 (narrowband), Speex/16000 (wideband), and Speex/32000 (ultra-wideband)
• Opus
• G.711 family codec (PCMA, PCMU)
• G.722
• iLBC
• GSM

External links

• Telephone website
• Telephone FAQ

Notes and References

1. Web site: Update license in file headers. . 2016-01-20.
2. Web site: Added license text in every source file. Added COPYRIGHT file with the license text.. . 2008-11-05.