PC Phone 2.1

PC Phone is a SIP User Agent, a software application that transforms your PC or Laptop into a telephone, giving you the advantage of using the same system (for example your personal computer) to make and receive voice and video calls as you use to check your email and do other computing tasks.
Advantages of PC Phone:
- All standards-based SIP software telephone, RFC 3261, RFC3550 compliant.
- Intuitive multi-language user interface (currently implemented languages: English, Chinese, French, German)
- A full range of royalty-free audio and video compression codecs means excellent quality of service on dial-up, broadband & wireless connections.
- Automatic mapping of IP addresses and ports of UPnP-enabled NATs.
- Installer has less than 3MB file size.
- Easy to install and use.
- IT"S FREE

Features:
-Fully-fledged Audio/Video SIP Softphone; RFC 3261, RFC3550 compliant
-Dial pad for dialling and for DTMF tone generation
-Intuitive use through tab-sheets with menus in the display area of the phone
- Video on/off, AA (auto answer) and DND (do not disturb) buttons
-6 speed dial buttons
-Phonebook, log of inbound calls as well as log of successful outbound calls
-Call timer and Caller ID (SIP ID)
-Call transfer and automatic forwarding of calls
-Microphone & Speaker Levels and level meters
-Separate session window with video window and numerous controls (volume controls, etc.)
-Supported audio codecs: G.711, G.722.1, G.723, GSM, DVI4, SIREN
-Redundant Audio Coding acc. RFC 2198
-Additional audio features: AEC, AGC, Dynamic Jitter Buffer (up to 500ms)
-Supported video codecs: H.263 and H.261 (QCIF and CIF, 6 to 125kBps)
-Exceptional characteristics at low bandwidth through Automatic Bandwidth Estimation
-Automatic mapping of IP addresses and ports of UPnP-enabled NATs
-1 or more SIP accounts
-Integrated Tuning Wizard
-Ringtones and background image can be customized
Intuitive user interface