Two new, Super-Duper Wireless Technologies
The first is from NowSpeed.com , and helps mobile workers receive corporate e-mail and attachments through their company address rather than through a third-party e-mail address--no matter where they are to access the e-mail. Devices that can be used to access e-mail include a PDA like a Palm Pilot or similar device, wireless application protocol (WAP) phone and smart pager.
If your cellular phone is charging or not accessible, the technology from Vox.Link  should work. The base station allows you to make and receive cellular calls with your wired phone. Although making a cellular call from a wired phone sounds counterproductive, the user is able to save money by paying long distance rates that normally would be charged for the cellular phone, including weekend and evening minutes. You'll also avoid any missed calls.