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KPhone is a SIP User Agent for Linux. It implements the functionality of a VoIP Softphone but is not restricted to this. Licensed under the GNU General Public License, KPhone is free software. KPhone is written in C++ and uses Qt. ==Application== KPhone establishes Sessions via the Internet and so enables communication between the endpoints. Audio is the "session type" used most frequently, but others are possible (see below). The main features: * Multiple parallel sessions (in the case of audio, one may be active, the others are held). * Own ring tones or "ring music" * NAT-traversal and STUN support * Supported sound systems: ALSA and OSS * SRTP encryption for voice *Presence information * Call Hold * Call transfer * Call forwarding * Auto Answer The following media types for sessions are supported: *audio *video (with the external application vic) *application (used to triggerExternal Applications) *instant messaging KPhone uses the media type application to launch communicating applications on both ends of the call. The user manual discusses the supported formats and how to install such an external application. A good example is KPhoneIM, a simple point-to-point IM application, other examples are the MICE Tools〔(MICE Tools )〕 of the project MBONE such as vic and wbd (whiteboard). KPhone itself supports STUN for NAT traversal. It may be used for the building audio solution and for KPhoneIM immediately, other external applications may need some adaptation to make use of it. (See the user manual of KPhoneSI and of KphoneIM for more). The MICE Tools do not support symmetric signalling,so NAT-Traversal is not possible with these tools. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「KPhone」の詳細全文を読む スポンサード リンク
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