tkcPhone is a Voice over IP (VoIP) application for the Sharp Zaurus PDA. What does that mean and why is it interesting? Well with VoIP you are able to make phone calls between computers without any fee's whatsoever beyond the cost of the internet connection. You can make phone calls from your Zaurus to an actual telephone by making use of our exclusive arrangement with iConnect for as little as 2.9¢ per minute from anywhere in the world to the United States. There is an enormous potential for saving money, especially within corporations that have geographically diverse installations. You are already paying for your Internet access -- why pay extra for the phone when you don't have to?

tkcPhone uses the latest technology with the most highly optimized codecs to get maximum clarity and minimum CPU and bandwidth usage. Now you can use your wireless Zaurus connection at home as an extra phone as well, just get an adapter for your cell phone ear/mic combo at Radio Shack and you are set to go.

tkcPhone has the following features:

SIP protocol based phone
Codecs: PCMU, GSM, G729
Dynamic jitter buffer size
Instant messenging
Buddy list
STUN server support
SIP proxy support
Digest/basic proxy authorization support
Net2Phone compatible client
Codec Negotiation - use of Offer/Answer model for SDP as described in RFC 3264
Event Notification - use of SIP Events framework as described in RFC 3265 for presence, instant messaging, message waiting, configuration and other event packages

The demo version limits phone calls to 30 seconds and does not contain the g729 codec.

There is potentially a problem with making calls behind some NAT's and we will resolve them as they are reported.