1、7- CEPT T/R*20-10*E 93 2326414 0012390 7T1 T/R 20-10 E Page 1 Recommendation T/R 20-10 (Athens 1990, revised in Paris 1992 and in Madrid 1992) DIGITAL SHORT-RANGE RADIO (DSRR) EQUIPMENT INTENDED TO PROVIDE SHORT-RANGE VOICE AND/OR DATA RADIOCOMMUNICATION IN THE FREQUENCY BANDS 933-935/888-890 MHz Re
2、commendation proposed by the Working Group “Radio Regulatory” (RR) Text of the Recommendation adopted by the “Eiuopean Radiocoinminiiicntioiis Committee” (ERC). “The European Conference of Postal and Telecommunications Administrations, considering a) that Digital Short-Range Radio (DSRR) equipment i
3、ntended to provide voice and/or data communication operated in the frequency bands 933-935/888-890 MHz, will be available for business and/or general purpose, bj that such equipment can meet the demands for short-range radiocommunications and in this way can contribute to the diminishing of the cong
4、estion in the other frequency bands allocated to the non-public land mobile service, c) that it would be desirable for Administrations to have common regulations at their disposal in order to control the use, the type approval, the marking and the free circulation of the DSRR equipment, d) that the
5、technical characteristics and the methods of measurement for the DSRR equipment are harmonized and in- cluded in an European Telecommunication Standard, e) that the clear identification of DSRR equipment would facilitate free circulation of this type of equipment, O recommends 1. that CEPT member Ad
6、ministrations allow DSRRequipment complying withETSI standard1-ETS 300 168 for Digital Short-Range Radio, to be used for business and/or general purpose by any person, subject to the common admi- nistrative conditions specified below, 2. that CEPT member Administrations designate the frequency bands
7、 933-935 MHz and 888-890 MHz for use by DSRR equipment in accordance with Recommendation T/R 75-02 E (Note), 3. that Administrations - shall give DSRR-usersthe discretion to communicate with any other DSRR-user; - may, however, in the case of the two-frequency semi-duplex mode of operation, allow us
8、ers to employ the facility available in base or repeater stations to send messages to and/or receive messages from only pre-selected parties, 4. that CEPT member Administrations adopt the rules for authorization of DSRR equipment in conformity with the conditions set out in Annex 1 of this Recommend
9、ation, 5. that CEE member Administrations adopt the rules for free circulation and marking of DSRR equipment in conformity with the conditions set out in Annex 2 of this Recommendation.” Note. In some countries parts of the band 888-890 MHzmay be used for telecommand and telemetry, thus restricting
10、the use of DSRl7. However, in all cases, both control channels 888.6625 MHz and 889.3125 MHz shall be kept free from the use by telecommand and telemetry equipment. O Edition of March 1, 1993 1. 2. O 2.1. 2.2. 2.3. 2.4. 3. 4. 5. 5.1. 5.2. CEPT T/R*20-3O*E 93 W 2326434 0032393 638 m TIR 20-10 E Page
11、3 Annex 1 CONDITIONS FOR THE USE OF DSRR EQUIPMENT DEFINITIONS DSRR system: DSRR is a radiocommunication system in the land mobile service based on a dynamic frequency selection system providing digital short-range radiocommunications for voice and/or data in the frequency bands 933-9351888-890 MHz
12、with a maximum out- put power of 4 W. It can encompass the following stations: a station in the land mobile service intended to be used while carried by a person. a station in the land mobile service mounted in a vehicle and intended to be used while in motion or during halts at unspecified points.
13、a station in the land mobile service installed at a fiied location. a station in the land mobile service installed at a fixed location which is intended to establish radiocommunications between portable and/or mobile stations. Portable DSRR station: Mobile DSRR station: DSRR base station: DSRR repea
14、ter: USE OF THE STATION The DSRR-user may use the equipment for business and/or general radiocommunications and is allowed to select the wanted communication partner as stated in Recommends 3. It shall not be allowed to use the equipment for other purposes, for instance for transmission or retransmi
15、ssion of a) broadcast programmes or music; b) false or misleading distress traffic. To avoid congestion on traffic channels, each portable/mobile station shall have a time limitation of 3 minutes for the communication period. When Administrations have decided to issue licences for repeaters and/or b
16、ase stations, these licence holders operating in the two-frequency semi-duplex mode shall, in order to limit unauthorized access to these stations, maintain a user database into which the selective calling codes of the authorized users are entered. To avoid contention between these stations, they sh
17、all not register a mobile which is already registered in the data- base of a station which shows an overlapping coverage area. The registrations shall be made available to the licen- sing authority upon request. CONFIGURATION OF THE SYSTEM The choice of one-frequency or two-frequency operation will
18、be left to the user of the equipment dependent on the specific communication requirement. TYPE APPROVAL OF DSRR EQUIPMENT The DSRR equipment shall be type-approved and bear a type-approval mark. AUTHORIZATION With the exception of equipment described in 5.2. below, the use of DSRR equipment shall be
19、 granted by means of a general permission. The conditions of operation of stations, which are connected to an external antenna that is mounted at a fixed loca- tion, shall be at the discretion of Administrations. Edition of March 1, 1993 CEPT T/R*ZO-LO*E 93 232b434 0032372 574 H TIR 20-10 E Page 4 I
20、DENTIFICATION CODES Every station shall have a unique identification code for monitoring purposes. Identification codes of base stations and repeater stations would be required to be registered with the Adminis- trations or responsible issuing authorities at their discretion. ANTENNA SPECIFICATIONS
21、Type and height of the antenna for stations at a fixed location shall be at the discretion of Administrations. However, in accordance with the Considering b), national regulations shall ensure that the antenna system is designed and installed to avoid excessive coverage. ANY OTHER USE 1. DSRR equipm
22、ent shall not be used either on board aircraft of any kind, or as an aeronautical station. 2. DSRR equipment shall not be connected to the public telecommunications network. FREQUENCIES Mobile and portable stations may be capable of transmitting in the frequency band 933-935 MHz and/or 888-890 MHz (
23、see table). Base stations and repeater stations transmit only in the frequency band: 933-935 MHz (see table). Mode A: Mode B: simplex in the frequency band: 933-935 MHz semi-duplex in the frequency band: 933-935 ME, paired with 888-890 MHz Transmit frequencies DSRR WHz) Equipment Mode A Mode B Both
24、A and B 1 Portable 1 933-935 1 888-890 1 bothbands i I I Mobile I 933-935 1 888-890 I bothbands I Base station 933-935 933-935 9 3 3 - 9 3 5 Repeater not possible 933-935 not possible Edition of March 1,1993 CEPT T/R*20-10*E 93 m 2326434 0032393 400 m T/R 20-10 E Page 5 Annex 2 CONDITIONS FOR THE FR
25、EE CIRCULATION AND MARKING OF DSRR EQUIPMENT COVERED BY THIS RECOMMENDATION 1. Each Administration shall allow the temporary use of DSRR equipment which is authorized by the Administration of the visitor. 2. An Administration shall indicate either by an entry on its licence form or through issuing a
26、 general permission that the use of DSRR equipment is authorized during a temporary stay in any country which has accepted this Recom- mendation. 3. A CEPT Administration shall accept an easily visible and identifiable mark, placed on the DSRR equipment in the following form: (X being the symbol of
27、the country where the equipment received type approval.) This symbol could be followed by the national authorization number. CEE DSRR XI The symbols to be used should be as shown in the following table: O Country Symbol Albania Austria Belgium Bulgaria Croatia Czech and Slovak (Federal Republic) Den
28、mark Finland France Germany Greece Iceland Irland Liechtenstein Cyprus Hungary Italy AL A B BG CE cs CY DK SF F D GR H IS LRL I FL Country Lithuania Luxemburg Malta Monaco Netherlands Norway Poland Portugal Romania San Marino Spain Sweden Switzerland Turkey United Kingdom Vatican City Yugoslavia Symbol LE L M MC NL N PL P R RSM E S CH TR GB scv w Edition of March 1, 1993
