Netgear?
One of these do?
http://netgear.co.uk/extra/h_wireless_skype_wifi_phone.php
I work on a diving vessel (oil related) and I'm looking to purchase a portable phone which can work on a wireless network. If possible I would prefer if the phone was not LAN connected, and that the actual phone could pick up the wireless signal. The portable phones will be used in a compressed chamber to give the divers …