ZOIPER Free Version 2.0 is a new generation SIP and IAX softphone compatible with the Asterisk platform as any other SIP or IAX capable system. ZOIPER Free Edition features include: SIP + IAX/IAX 2 protocols, STUN support, STUN server per account, Echo cancellation, DTMF tones sending, Support for multiple audio devices, Automatic user registration, Call transfer, Hold function, Codecs: GSM, ulaw, alaw, speex, ilbc, Adaptive, Call history, Address book, Quick dial panel, Optional Automatic pop-up window for incoming call, Always on top, Call logs, Voice mail message information, Account password encryption, Upgrade notification, Jitter Buffer, Adjustment of audio device, Codecs priority, Portable storage compatibility, Multilanguage support; ZOIPER can also be re-branded. You can choose one of the three types of re-branding: Basic - colours, name and logo to your choice; Re-branding with additional development – e.g. changing the language; adding, disabling, removing menus, options, buttons; adding functionalities; Complete – you can go for complete change of the interface and functionality. Details about ZOIPER OEM can be obtained at zoiper@asteriskguru.com. ZOIPER BIZ, the advanced version of ZOIPER Free, gives more features: SIP + IAX protocols, Native conferencing, API, G729 (optionally), STUN support, STUN server per account, Mail program plug-in: Outlook integration, Callto URL protocol, Automatic provisioning (XML), Call forward, Auto answer, Incoming URL handling, Automatic opening of incoming URL, Access voice mail message with one button, Codec settings per account, Attended transfer, Call recording (Single file recordings), Command line dialing, Custom ring tones, TCP/TLS transport, Open URL on call answer, Call history, Call transfer, Unlimited number of accounts, Changeable number of lines (up to 6), etc.