Truphone will give the first public demonstration of a Voice over Internet Protocol over Wi-Fi phone call on the Apple iPhone. Chief executive officer James Tagg will make the VoIP call in front of an audience of 350 delegates to DEMOfall 07 in San Diego, CA.

The company will also give a demonstration of an application that mashes up social networking site Facebook and traditional telephony. Any Facebook user will be able to click on a friend's Truphone 'Call Me' button, and a free phone call will be initiated to whichever phone their friend has chosen. This will mean free calls to real phones for everyone in the Facebook community.

Altogether, Truphone will today demonstrate:

• VoIP on the Apple iPhone (SIP-SIP, SIP-Phone, Phone-SIP)
• VoIP from Facebook (to SIP and to PSTN)
• and, as an encore, Facebook-iPhone using SIP.

Key facts

iPhone demonstration

1. Many people have called for true VoIP calling on Apple's iPhone. Truphone will today prove that it is possible using the iPhone's in-built Wi-Fi capability.
2. Truphone's demonstration will comprise two iPhones connected to Wi-Fi on the DEMOfall 07 stage. A VoIP call will be initiated from one handset, routed via Wi-Fi and the Internet to Truphone's servers, and then back again to the access point and onwards to the destination handset - a 100% IP phone call.
3. Today's event will be a live demonstration only and is not a commercial launch of Truphone on the iPhone.
4. Truphone does not need to unlock the SIM in order to operate its service for the iPhone.

Facebook demonstration

1. The company will also give a demonstration today of an application that mashes up social networking site Facebook with traditional telephony. The big differentiator between Truphone's demonstration and other applications for Facebook is that Truphone is the only one to embed an actual phone into the very heart of Facebook.
2. Facebook users will be able to drop their Truphone 'Call Me' button onto their friends' Walls and also embed it into Facebook messages. People will be able to allow other people to call them, while keeping their actual number confidential.
3. The Truphone 'Call Me' button for Facebook to be demonstrated today showcases the potential for additional innovative services enabled by Truphone's all-IP internet telephony infrastructure.
4. Truphone's Facebook application is currently in development.