AT&T has filed a waiver with the FCC asking the agency to alter some of the rules governing how AT&T serves deaf and hard-of-hearing customers so it can deploy WiFi calling sooner. AT&T plans to use WiFi to supplement its cellular network in some areas. According to AT&T, however, the TTY technology used to provide telephony services to the deaf is outdated and unreliable when pushed over WiFi. AT&T has a replacement technology, called Real-Time Text, or RTT, under development. "RTT is designed to provide better functionality than TTY, working over WiFi calling and other new IP-based networks," explained AT&T in a blog post. "Once we implement RTT, it will be backwards compatible with TTY so our customers using RTT can still communicate with TTY users, including 911 centers." AT&T can't use RTT, however, until the FCC gives it permission to make the switch. Once AT&T is allowed to jump to RTT, it will be able to move forward with its WiFi network and WiFi-based calling services. The FCC has not publicly responded to AT&T's request.
from Phone Scoop - Latest News http://ift.tt/1KwWp35
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