36 CFR Part 1194 - Proposed Information and Communication Technology (ICT) Standards and Guidelines NPRM - Preamble

2. Comparison of Proposed Rule with EN 301 549 Standard

a. General Comparison: Approach, Terminology and Organization

In this NPRM, the Board makes several proposals that are similar to those in the most recently published EN 301 549. Both the proposed rule and EN 301 549 address the functions of technology, rather than categories of technologies. Similarly, both offer technical requirements and functional performance criteria for accessible ICT. For example, our use of the phrase “information and communication technology” (ICT) in this NRPM, as a replacement of the existing term “electronic and information technology,” originates in the common usage of ICT throughout Europe and the rest of the world. Moreover, both documents are organized in similar ways, in that they both have initial scoping and definitions chapters, followed by separate chapters containing technical requirements and functional performance criteria.

Organizationally, the documents differ in several respects. These general differences are outlined in Table 2 below:

Table 2 - Formatting differences between the NPRM and EN 301 549

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b. Specific Examples: Differing Treatment of Similar Concepts

Real-Time Text Functionality

In this NPRM, the Board proposes that where ICT provides real-time voice communication, it must also support real-time text (RTT) functionality, as described in 410.6. Most significantly, the Board proposes to require that where ICT interoperates with Voice over Internet Protocol (VoIP) products using Session Initiation Protocol (SIP), it must support the transmission of RTT that conforms to RFC 4103 (RTP Payload for Text Conversion (2005)). In the Major Issues section, the Board asks whether additional standards for real-time text, which are in the process of being finalized (such as XEP-0301), should also be referenced. See Section V.D, Question 8. The proposed rule limits the approach to RTT by proposing to only incorporate by reference a maximum of two standards for RTT interoperating with VoIP.

In contrast, EN 301 549 allows the use of multiple standards for RTT. In addition to referencing RFC 4103 (section 6.3.3(b)), it permits the use of four other standards and an unspecified “common specification” for RTT exchange. The only criterion in the common specification is that it must indicate a method for indicating loss or corruption of characters. For a further discussion of RTT functionality, see Section V.D (Major Issues - Real-Time Text) below.

We are not proposing to adopt the other four standards referenced by EN 301 549 because they are not applicable to the type of technology used in the United States. Just as mobile phones are not directly compatible between the United States and Europe (i.e., CDMA phone systems versus GSM (Global System Mobile)), portions of the four standards referenced in EN 301 549 are simply not relevant in the U.S. market, and there are no indications that they will have domestic relevance in the near future.

The standards referenced by EN 301 549 address more than just real-time text functionality. Some are quite broad and address several communications features, such as video speed and accuracy. One example of such a standard is ETSI TS 126 114 (Universal Mobile Telecommunications System (UMTS)) which covers voice, video, and data transmission rates and speeds. This standard supports an approach to communication known as “total communication.” We are not proposing to adopt this approach. In the 2010 ANPRM, the Board proposed transmission accuracy rates and speeds for video, text and voice data, based on recommendations from the Advisory Committee. In response, we received numerous comments questioning the accuracy of the proposed rates, the sources for the proposals and the research underlying the proposed rates. Consequently, the Board removed those proposals in the 2011 ANPRM.

Question 3. We are seeking further information on the benefits and costs associated with adopting standards that address total communications, including voice, video, and data transmission rates and speeds. We seek recommendations for specific standards that the Board might reference to address total communication.

Video Communication

In this NPRM, the Board proposes that where ICT provides two-way voice communication that includes real-time video functionality, the quality of the video must be sufficient to support communication using sign language (section 410.8). The provision specifies a desired outcome and does not provide specific technical requirements. This approach resulted from public comments in response to our proposal in the 2010 ANPRM. Public commenters noted there were no existing standards supporting the technical requirements the Board had proposed concerning resolution, frame rates, and processing speed. In the 2011 ANPRM, the Board elected to remove those proposed technical requirements in favor of simply requiring the quality of the video to be sufficient to support communications using sign language. We received no comments on this approach, and retain it here in this NPRM.

EN 301 549, on the other hand, takes a different tact. In “6.6 Video Communication,” the standard specifies numeric measurements for such features as resolution (6.6.2), frame rates (6.6.3) and alternatives to video-based services (6.7). This approach is similar to our proposal in the 2010 ANPRM, which, as noted, the Board dropped due to significant negative comments.

In general, the approaches taken in EN 301 549 and this NPRM are similar and complimentary. The Access Board’s proposed rule contains less detail in some proposed provisions, as discussed above. We elected to pursue this course in response to public comments and our desire to make use of a number of voluntary consensus standards by incorporating them by reference. This approach will result in better harmonization of accessibility standards worldwide.