iTRS ENUM Database

Deliver seamless service to all your customers.

Authorized Video Relay Service and IP Relay providers can enhance their services to deaf and hard of hearing customers by accessing the iTRS ENUM database, operated by Neustar under contract to the FCC.

The iTRS database maps 10-digit U.S. telephone numbers to IP addresses or Instant Message screen names using industry-standard ENUM protocol.

Relay Call Placement

Video Relay Service and IP Relay users who are deaf or hard of hearing are assigned 10 digit telephone numbers by their chosen “default” provider. These telephone numbers, which automatically create relay calls when they are called by hearing users, are real, local geographic telephone numbers. Relay calls which are direct dialed by hearing callers to deaf or hard of hearing persons use the default relay provider to provide interpreting services. Similarly, a call by a deaf or hard of hearing user to a hearing person may be direct dialed on the deaf/HoH user's IP device and will be placed automatically as a relay call using the default provider.

Meet FCC Requirement

The FCC requires that all users be able to select an IP TRS provider of their choice for any call. When a hearing person calls a deaf/HoH person using an alternate provider, that provider needs to be able to complete an IP connection to the called deaf/HoH user. The alternate provider uses the Neustar iTRS ENUM database to obtain the IP address of a video device or the Instant Messaging screen name for the called deaf/HoH user. The database is also used when one deaf/HoH user calls another deaf/HoH user and the two parties do not use the same default provider.

Access to Database

The iTRS ENUM Database is available only to VRS and IP Relay providers eligible for reimbursement from the Interstate TRS Fund, and who appear on the NECA reports from the Fund. Entities who are contracted by eligible providers and who actually provide services to eligible providers may also have access to the database. Learn more from an iTRS expert..