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Contact UsOverview of ARIB Standards (STD-T79)
1. Overview
| STD Number | ARIB STD-T79 |
|---|---|
| Standard Name | Digital Mobile Telecommunication System for Local Government |
| Enactment Date | 09.06.2001 |
| General Description | This standard specifies air interface of Digital Mobile Communication System employing TDMA (Time Division Multiple Access) system for Local Government among narrowband digital communication systems using 260 MHz band defined in Article 57-3-2 of the Ordinance Regulating Radio Equipment. (In addition, this standard corresponds to the system employing 4-level digital modulation (π/4 shift QPSK) method and having 25kHz channel separation in the above Article of the Ordinance). Fascicle 1 defines general descriptions, system outline, technical requirements for the equipment and communication methods. Fascicle 2 specifies voice coding scheme and measuring method, and adds Glossary, Annex, Description and Appendix (Two fascicles) |
2. Amendment History
| Ver. | Amendment or Enactment Date | Amendment summary |
|---|---|---|
| 3.0 | 07.29.2009 | (1) Addition of provision for mutual support communications, and clarification of other provisions (2) Correction of errors |
| 2.2 | 09.28.3006 | (1) Addition of items required to secure interconnection as Attachment J (2) Correction of errors, and Addition of explanations |
| 2.1 | 11.30.2005 | (1) Addition of manufacturers number assignment (2) Revision of the definition of spurious emission, etc., tolerance, interim measures, measuring method, etc. corresponding to the revision of technical standard for tolerance of spurious emission intensity |
| 2.0 | 09.28.2004 | - Ensure reliable interconnection between different manufactures’ equipment properly, - Enhance function to expand subject system defined in this standard from municipality (city, town or village) only to prefectures, because Examination Guidelines related to the Radio Act is partly revised and “Prefectures Digital Disaster Prevention Radio System” using 260MHz is available, - Change the name of standard from “Digital Mobile Telecommunication System for Municipality TYPE 1” to “Digital Mobile Telecommunication System for Local Government TYPE 1” |
| 1.1 | 03.28.2002 | Revision corresponding to the submission of confirmation notes relating to essential Industrial Property Rights |
| 1.0 | 09.06.2001 | Enactment |
3 View Some (latest version)
Fascicle 1
Fascicle 2
