1、CEPT T/R*ZO-LO*E 92 232b4/4 0032687 5T Page 1 Recommendation T/R 20-10 (Athens 1990, revised in Paris 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 Recommendation proposed by Working Gr
2、oup T/WG 19 “Radio Regulatory” (RR) Text of the Recommendation adopted by “European Radiocommunications Committee” (ERC) . “The European Conference of Postal and Telecommunications Administrations, considering a) that digital short-range radio (DSRR) equipment intended to provide voice and/or data c
3、ommunication operated in the frequency bands 933-9351888-890 MHz, will be available for business and/or general purpose, b) that such equipment can meet the demands for short-range radiocommunications and in this way can contribute to the diminishing of the congestion in the other frequency bands al
4、located 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 technical characteristics and the meth
5、ods of measurement for the DSRR equipment are harmonized and included 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 Administrations allow DSRR equipment compl
6、ying with ETSI standard ETS 300 168 for Digital Short-Range Radio to be used for business and/or general purpose by any person, subject to the common administrative conditions specified below, 2. that CEPT member Administrations designate the frequency bands 933-935 MHz and 888-890 MHz for use by DS
7、RR equipment in accordance with Recommendation T/R 75-02 E (Note), 3. that Administrations - shall give DSRR-users the discretion to communicate with any other DSRR-user; - may, however, in the case of the two-frequency semi duplex mode of operation, allow users to employ the facility available in b
8、ase 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 5. that CEPT member Administrations adopt the rules for free circulation and marking of DSRR
9、 equipment in the conditions set out in Annex 1 of this Recommendation, conformity with the conditions set out in Annex 2 of this Recommendation.” Note. In some countries parts of the band 888-890 MHz may be used for telecommand and telemetry, thus restricting the use of DSRR. However, at least one
10、of the channels 888.6625 MHz and 889.3125 MHz shall be kept free from the use by telecommand and telemetry equipment. Edition.of June 15, 1992 CEPT T/R*ZO-LO*E 92 232b4L4 0032688 896 1. 2. O 2.1. 2.2. 2.3. 2.4. 3. 4. 5. 5.1. 5.2. 6. TIR 20-10 E Page 3 Annex 1 CONDITIONS FOR THE USE OF DSRR EQUIPMENT
11、 DEFINITIONS DSRR system: DSRR is a radiocommunication system in the land mobile service based on a dynamic frequency selection system providing digital short-range radiocommunica- tions for voice and/or data in the frequency bands 933-935/888-890 MHz with a maximum output power of 4 Watts. It can e
12、ncompass the following stations: Portable DSRR station: a station in the land mobile service intended to be used while carried by a person. Mobile DSRR station: 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. DS
13、RR base station: a station in the land mobile service installed at a fixed location. DSRR repeater: a station in the land mobile service installed at a fixed location which is intended to establish radiocommunications between portable and/or mobile stations. USE OF THE STATION The DSRR-user may use
14、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 retransmission Of a) broadcast programmes or music; b)
15、false or misleading distress trafic. To avoid congestion on trafic 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 base stations these licence holders operating in t
16、he 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 shall not register a mobile which is already register
17、ed in the database of a station which shows an overlapping coverage area. The registrations shall be made available to the licensing authority upon request. CONFIGURATION OF THE SYSTEM The choice of one-frequency or two-frequency operation will be left to the user of the equipment dependent - on the
18、 specific commnication requirement. TYPE APPROVAL OF DSRR EQUIPMENT The DSRR equipment shall be type-approved and bear a type-approval mark. AUTHORIZATION With exception of equipment described in 5.2. below, the use of DSRR equipmer of a general permission. shall be granted by means The conditions o
19、f operation of stations, which are connected to an external antenna that is mounted at a fixed location, shall be at the discretion of Administrations. IDENTIFICATION CODES Every station shall have a unique identification code for monitoring purposes. Identification codes of base stations and repeat
20、er stations would be required to be registered with the Administrations or responsible issuing authorities at their discretion. Edition of June 15, 1992 CEPT T/R*20-LO*E 92 = 2326434 0032689 722 D TIR 20-10 E Page 4 ANTENNA SPECIFICATIONS Type and height of the antenna for stations at a fixed locati
21、on 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 equipment shall not be used either on board aircraft of any kind, o
22、r 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 (see table). Base stations and repeater stations transmit only
23、 in the frequency band: 933-935 MHz (see table). Mode A: Mode B: simplex in frequency band: 933-935 MHz semi-duplex in the frequency band 933-935 MHz, paired with 888-890 MHz I Transmit frequencies DSRR (MHz) I 1 Equipment I ModeA I Mode B I Both Aand B I I Portable I 933-935 I 888-890 I both bands
24、I I Mobile I 933-935 I 888-890 I both bands I I Base station I 933-935 I 933-935 I 933-935 I I Repeater I not possible I 933-935 I not possible I Edition of June 15, 1992 CEPT T/R*20-30*E 92 m 2326434 O032690 444 m TIR 20-10 E Page 5 Annex 2 CONDITIONS FOR THE FREE CIRCULATION AND MARKING OF DSRR EQ
25、UIPMENT COVERED BY THIS RECOMMENDATION 1. Each Administration shall allow the temporary use of DSRR equipment which is authorized by the Administra- tion of the visitor. 2. An Administration shall indicate either by an entry on its licence form or through issuing a general permission that the use of
26、 DSRR equipment is authorized during a temporary stay in any country which has accepted this Recommendation. 3. A CEPT Administration shall accept an easily visible and identifiable mark, placed on the DSRR equipment in the following form: o( being the symbol of the country where the equipment recei
27、ved type approval.) This symbol could be followed by the national authorization number. CEPT DSRR XI i The symbols to be used should be as shown in the following table: Country Symbol Albania AL Austria Belgium Bulgaria Czech and Slovak (Federal Republic) Denmark Finland France Germany Greece Hungar
28、y Iceland Irland Italy Liechtenstein Cyprus A B BG cs CY DK SF F D GR H IS IRL I FL Country Luxemburg Malta Monaco Netherlands Norway Poland Portugal Romania San Marino Spain Sweden Switzerland Turkey United Kingdom Vatican City Yugoslavia Symbol L M MC NL N PL P R RSM E S CH TR GB scv YU Edition of June 15. 1992
