Information and Communication Technology (ICT) developments have recently exploded to yield potential
telecommunication opportunities for Deaf people in ways that were only imagined not so long ago. The state-ofthe-
art technology promises multimedia (text, voice and video) and multifunctional devices for home, work and
mobile systems for the Deaf. Internet-based devices and protocols are rapidly augmenting and replacing Public
Switched Telephone Network (PSTN) based solutions and services. Pager and cell phone Short Message Service
(SMS) are becoming prevalent for Deaf users because of their wireless mobile nature (Nelson and Underschultz,
2003). The unbridled success of text messaging has fueled demand for visual-based wireless communication to
support sign language-based remote communication. Text and sign language relay services exist, but they are
not ubiquitous (Bergmeister, Dotter, Hilzensauer, Krammer, Okorn, Orter, Skant, and Unterberger, 1999).
As long as two Deaf......
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