Purpose and Scope

Several TIA standards have been developed within TR45 that are based upon ANSI/TIA/EIA-553. Since these new standards will evolve independently, there will be changes made in the definition of message field assignments within the various messages. Since these standards are also dual mode (common analog), it is required that the interpretation of message fields be consistent for backward (and forward) compatibility. In order to facilitate this assessment of consistency, this Technical Service Bulletin has been created. It is envisioned that this document be revised accordingly each time a new revision of the associated standards is officially published by TIA.

The scope of this effort shall encompass all TIA TR45 Mobile Station - Land (Base) Station Compatibility specifications (commonly referred to as Air Interface specifications) that specifically or implicitly require interoperability. At this time, the standards included herein are: ANSI/TIA/EIA-553, ANSI/TIA/EIA-553-A, EIA/TIA IS-54-B, ANSI/TIA/EIA-627, ANSI/TIA/EIA-136-0 (also referred to as IS-136-A), ANSI/TIA/EIA-136-A, EIA/TIA IS-88, EIA/TIA IS-91, EIA/TIA IS-91-A, ANSI/TIA/EIA-691, EIA/TIA IS-94, EIA/TIA IS-95-A, TIA/EIA-95-B, EIA/TIA IS- 683 and EIA/TIA IS-683-A. The specific revision and publication dates of the standards are contained in Section 2. Specific directions concerning the information contained in the messaging references are contained in Section 3.

Note: Word formats for Narrow Analog Voice Channels (Forward and Reverse) are not included.