SIP client software

Tiviis a truly global multi-mode soft-phone for making and receiving phone calls over IP, fixed and cellular networks. The basic setup needs only an internet-connected PC: create your personal account online and gain access to the low-cost communication all over the world. This is a small, SIP-based application with a compact and user-friendly interface, supplemented by helpful tools and echo cancellation. Tivi Phone runs on Windows, Symbian, Linux and Mac.

Our SIP/VoIP softphone has these features:

• Superior quality two-way calls to fixed and mobile telephone subscribers and PC users
• Calling to PSTN or CS, SIP buddy or dial an IP address
• Free voice and video IP calls
• Conferencing of multiple users
• Create, share and maintain a phone book
• Access to a computer-based voicemail box via Web browser
• Seamless roaming between Wi-Fi, GPRS (UTMS), GSM and 3G
• Send DTMF or the so-called touch tones (full support, incl. SIP INFO DTMF and RFC 2833)
• Instant/automated redialing
• Access to the account balance information

Softphone features:

• Volume of sound shown as an animated bar
• Volume control (the one that you hear)
• Voice auto-gain control
• Microphone volume and muting controls (the way you are heard by your partner)
• Ring-tone volume and muting
• Voicemail captures incoming messages if the user is offline
• Voicemail interface with onscreen buttons: Play, Delete
• Voicemail integration
• Do-not-disturb (DND)
• Last-number redial
• Auto answer
• Dialing via the computer keyboard or screen dial pad (GUI),
• Transfer of incoming calls when the user is offline, including a "new message received" indicator
• Automated initiation of outgoing telephone calls via "autodial" and the user's database of contacts
• Call forwarding: route your incoming calls to a mobile/cell phone, landline or IP-based destination
• Works on all PCs with a soundcard and headset/speakers/microphone
• Conference calling can involve up to 20 callers in one session

Supported protocols:

• SIP proxy authorization support and HTTP digest authentication (RFC 2617)
• Intelligent handling of NAT and firewall setups, which works reliably over SIP and RTP ports
• Detecting NAT using STUN

Connectivity: any broadband IP, wired or wireless (DSL, Wi-Fi, 3G, WiMAX)

Codecs: GSM (06.10), G.729, G.711

Communication protocols and standards:

• SIP (RFC 3261)
• http auth (RFC 2617)
• SDP (RFC2327)
• RTP/RTCP (RFC 3550)
• SIP INFO (RFC 2976)
• STUN (RFC 3489)
• Presence (RFC 3856)

Requirements for the PC

• Works under MS Windows 7, XP/Vista and Windows 2000
• As Windows installation package

Notes for users

While in a one-on-one call or telehone conference, you can use any of the above-mentioned dialing methods at any time. For example, you can send DTMF or the so-called touch-tones (incl. SIP DTMF), which are useful when dialing into specific PBX extensions or responding to IVR/voicemail requests. Information utilities include a call duration timer and caller ID display. Blocking of junk callers is also available.

Paying Tivi customers can instantly view their account balance. There is a flexible call-forwarding feature: unconditional or programmed for "no answer" situations as well as manual transfer during the conversation.

To sum up, Tivi Phone is designed to be very intuitive to use: its interface consists of emulated mobile phone keypad features, which are convenient and familiar to most users. It is integrated with instant messaging (IM), message logging and voicemail.