IP Wireless Phone can be patched in to a wireless network via it's own wireless network card. IP Video Phone is for use in video conferencing. These models allow you to see as well as hear person(s) on the other end of the line. IP Wireless Video Phone gives you the convenience that a wireless network provides and allows worldwide video calls.
These are different types of services that phones offer, such as the ability to put calls on hold, call waiting, and caller-ID.
Supplementary Service
Message Waiting Indication (H.450.7)
IP Phones often come with attached keyboards. This is the type of keyboard your IP phone has. Numeric keyboards have only numbers, whereas alpha-numeric have both letters and numbers. QWERTY keyboards are standard layout typing keyboards.
Buttons
Redial, Mute, Hold, Transfer, Conference