From the Federal Communications Commission .........

Today the Commission put on its website a Consumer Advisory summarizing the ten-digit numbering and emergency call requirements for Video Relay Service (VRS) and IP Relay, forms of telecommunications relay service (TRS), adopted by the Commission in the June 24, 2008, numbering order (FCC 08-151). These requirements become effective December 31, 2008, and will permit voice telephone users to call VRS and IP Relay users by dialing the user's ten-digit number, and will permit VRS and IP Relay users to make emergency calls that will automatically route to appropriate emergency services personnel.

http://www.fcc.gov/cgb/consumerfacts/trstendigit.html