47 CFR 64.613 - Numbering directory for Internet-based TRS users.
(a)TRS Numbering Directory.
(1) The TRS Numbering Directory shall contain records mapping the geographically appropriate NANP telephone number of each Registered Internet-based TRS User to a unique Uniform Resource Identifier (URI).
(2) For each record associated with a VRS user's geographically appropriate NANP telephone number, the URI shall contain the IP address of the user's device. For each record associated with an IP Relay user's geographically appropriate NANP telephone number, the URI shall contain the user's user name and domain name that can be subsequently resolved to reach the user.
(3) Within one year after the effective date of this Order, Internet-based TRS providers must ensure that a user's toll free number that is associated with a geographically appropriate NANP number will be associated with the same URI as that geographically appropriate NANP telephone number.
(iii) Nor may the TRS Numbering Administrator nor any affiliate be unduly influenced, as determined by the North American Numbering Council, by parties with a vested interest in the outcome of TRS-related numbering administration and activities.