1. a) Each telecommunications carrier shall provide intrastate service whereby a person with a hearing or speech disability can communicate with voice telephone users through the use of a trained CA or functionally equivalent technology. At a minimum, relay service shall:

   1. 1) Provide text-to-voice and voice-to-text relay service;
   2. 2) Be capable of communicating with ASCII or Baudot format at any speed generally in use;
   3. 3) Provide speech-to-speech relay service;
   4. 4) Provide Spanish language relay service;
   5. 5) Provide VCO, two-line VCO, VCO-to-TTY, and VCO-to-VCO;
   6. 6) Provide HCO, two-line HCO, HCO-to-TTY, HCO-to-HCO; and
   7. 7) Provide access via the 7-1-1 dialing code to all relay services as a toll free call.
2. b) The minimum requirements listed in this Section do not prevent ITAC from offering more relay services, including but not limited to Video Relay Service and Non-English language relay service.
3. c) TRS providers are required to provide the following features:
4. 1) Call release functionality;
5. 2) Speed dialing functionality;
6. 3) Three-way calling functionality; and
7. 4) Answering machine and voice mail retrieval.

(Source: Amended at 28 Ill. Reg. 6974, effective May 1, 2004)