Text Box: All of the following users should be able to engage in a call using both voice and text (where there is a text device).

Long Description: The following types of communication devices should function with VoIP: a regular phone, a phone connected to a TTY, or a computer, PDA, or other IP text device. A phone using a TTY connected to PSTN should also work. Using PSTN, cell phones, traditional TTYs, PSTN phones, etc. should all work.