1、ETSI I-ETS+300 131 94 3400855 0002373 b7b EL EC OM M UN I CATI ON STANDARD LETS 300 131 November 1994 Second Edition Source: ETSI TC-RES Reference: RI/RES-03015 UDC: 621.396 Key words: CT2, CAI Radio Equipment and Systems (RES); Common air interface specification to be used for the interworking betw
2、een cordless telephone apparatus in the frequency band 864,l MHz to 868,l MHz, including public access services ETSI European Telecommunications Standards Institute ETSI Secretariat Postal address: 06921 Sophia Antipolis Cedex - FRANCE Office address: Route des Lucioles - Sophia Antipolis - Valbonne
3、 - FRANCE Tel.: + 33 92 94 42 O0 - Fax: + 33 93 65 47 16 0 European Telecommunications Standards Institute 1 994. All rights reserved. No part may be reproduced except as authorised by written permission. The copyright and the foregoing restriction on reproduction extend to all media in which the in
4、formation may be embodied. Some of the material contained herein is the copyright of, or has been supplied by, the United Kingdom Department of Trade and Industry, the British Standards Institution and the companies listed in annex H. ETSI I-ETSx300 131 94 = 3400855 0002372 502 m Page 2 LETS 300 131
5、 : November 1994 Whilst every care has been taken in the preparation and publication of this document, errors in content, typographical or otherwise, may occur. If you have comments concerning its accuracy, please write to “ETSI Editing and Standards Approval Dept.“ at the address shown on the title
6、 page. ETSI I-ETS*300 131 94 = 3400855 0002373 449 = Page 3 I-ETS 300 131 : November 1994 Contents Foreword . 17 Introduction 17 1 Scope . 19 2 Normative references . 20 3 Definitions and abbreviations 22 3.1 Definitions 22 3.2 Abbreviations 22 4 Radio frequency interface 27 4.2 Channel frequencies
7、. 27 4.1 General 27 4.2.1 Channel centre frequencies 27 4.2.2 Channel frequency accuracy . 27 4.2.3 Rate of change of transmit centre frequency 27 4.2.4 CTAaccess . 27 4.3.1 CTAaccess . 27 4.3.2 Signalling whilst in the communication state 27 4.3.3 Signalling outside the communication state . 28 4.3
8、 Signalling strategy . 27 4.4 Dynamic channel allocation strategy 28 4.4.1 Incoming calls . 28 4.4.2 Outgoing calls . 28 4.4.3 Channel selection strategies 28 4.4.4 Free channel 28 4.4.4.1 Free channel selection for primary services . 28 4.4.4.2 Free channel selection for secondary services . 29 4.5
9、 Radio transmitters . 29 4.5.1 RFpower 29 4.5.1.1 Maximum RF power 29 4.5.1.2 Minimum RF power . 29 4.5.1.3 Output power at low power setting 30 4.5.2 Modulation . 30 4.5.3 Adaptive transmitter power strategy 30 4.5.3.1 General . 30 4.5.3.2 CPPonly 30 4.5.3.3 CPPandCFP . 30 4.5.3.4 Power level chang
10、es 30 4.5.4.1 Amplitude . 31 4.5.4.2 Dispersion effects 31 4.5.4.4 Synchronisation of transmitter burst envelopes 31 Out of band power arising from transmitter transients 32 4.5.4 Transmitter burst envelope 30 4.5.4.3 Guard time . 31 4.5.5 Adjacent channel power (narrow band) 31 4.5.7 Intermodulatio
11、n attenuation 32 4.6 Radio receivers . 32 4.5.6 ETSI I-ETSr300 131 94 3400855 0002374 385 Page 4 I-ETS 300 131 : November 1994 4.6.2 4.6.3 4.6.1 General 32 4.6.1 -1 CTA including three or more RFPs . 32 4.6.1.2 OtherCTAs 32 4.6.1.3 CTAs without integral or supplied antenna . 32 4.6.2.1 4.6.2.2 Recei
12、ver sensitivity with a 50 ohm connector . 33 4.6.3.1 Unmodulated interfering carrier signal 33 4.6.3.2 Modulated asynchronous interfering signal . 33 4.6.4 Blocking due to spurious responses 34 Sensitivity 32 supplied antenna . 32 Interference rejection 33 Receiver sensitivity for CFP or CPP using a
13、n integral or 4.6.5 Intermodulation response rejection . 34 4.7 Combined radio transmitterheceiverc 35 4.8 Termination of the communication state 35 4.8.1 Clear down signal sequence 35 4.8.3 Off-line timing . 36 4.9 Channel scanning . 36 4.9.1 Available channels 36 4.9.2 Response times 36 4.9.2.1 Ou
14、tgoing 36 4.9.2.2 Incoming 36 4.1 O In-communication channel switching 36 4.10.1 Capability 36 4.10.2 Channel change delay 36 4.12 Synthesisers and PLL systems 37 4.7.1 Adverse power supply conditions 35 4.7.2 Spurious emissions of the combined transmitterheceiver 35 4.8.2 Cessation of RF activity 3
15、5 4.11 Controls 37 5 Signalling layer one 37 5.1 Data structure and timing 38 5.1.2 Time-division duplexing . 38 5.1.3 Master-slave relationship 38 5.2 Sub-channel multiplexes . 39 5.2.2 Multiplex one 40 5.2.3 Multiplex two . 41 5.2.4 Multiplex three . 41 5.3 Calling channel detection 43 5.4 Link se
16、t up and establishment . 44 5.4.3 Set up collision resolution . 46 5.1.1 Data rate . 38 5.2.1 Channel Markers (CHM) and synchronism markers (SYNC) 39 5.3.1 Calling channel detection at the CPP 43 5.3.2 Calling channel detection at the CFP 44 5.4.1 Link set up from CFP to CPP . 45 5.4.2 Link set up f
17、rom CPP to CFP . 45 5.4.4 Link re-establishment on the existing channel 46 5.4.4.1 Action at the CPP 47 5.4.4.2 Action at the CFP 47 5.4.5 Link re-establishment on a re-selected channel . 48 5.4.5.1 AttheCPP . 48 5.4.5.2 AttheCFP . 48 5.4.6.1 Action at the CFP 49 5.4.6 Synchronous re-establishment 4
18、8 5.5 6.4 6.5 ETSI I-ETSt300 131 94 3400855 0002375 211 = Page 5 LETS 300 131 : November 1994 5.4.6.2 Action at the CPP 50 ID handshaking 51 5.5.1 General 51 5.5.1.1 Handshake code series 51 5.5.1.2 Code allocation 51 5.5.1.3 Code matching 51 5.5.1.4 Code recognition . 51 5.5.1.5 Communication state
19、 51 5.5.1.6 Lack of in-communication handshake: RF activity 51 5.5.1.7 Lack of in-communication handshake: off-line state . 51 5.5.2 ID handshake operation . 51 5.5.3 Handshake protocol . 52 5.5.4 Reception of valid handshakes 52 5.5.5 ID handshake mechanism . 52 6 Signalling layer two 53 6.1 Code w
20、ord usage . 54 6.2 General message format . 54 6.3 General packet format . 54 6.3.1 Order of transmission and field mapping convention . 55 6.3.2 IDLE-D 55 6.3.3 Synchronisation word (SY NCD) . 55 6.3.4 Code Words - (address and data code words) . 55 6.3.5 Code word transmission sequence . 56 6.3.6
21、Check field encoding (octets 7 and 8) . 56 6.4.1 Signalling Rate (SR) (octet 1 (part) . 57 6.4.2 Link Status (LS) (octet 1 (part) . 57 6.4.3 Handset Identification Code (HIC) (octets 1 (part), 2, 3) 58 6.4.4 Manufacturer Identification Code (MIC) (octet 4) . 58 6.4.5 Link Identification code (LID) (
22、octets 5 and 6) . 58 6.4.5.1 Allocation of LID values 59 6.4.5.2 Link set up from the CPP: LID use by the CPP in LINK-REQUEST 60 6.4.5.3 Link set up from the CPP: LID use by the CFP in LINK-GRANT . 60 6.4.5.4 Polling of CPPs (including link set up from the CFP): LID 6.4.5.5 CPP poll response: LID us
23、e by the CPP in ID-OK . 6.4.5.6 Link set up from the CFP: LID use by the CPP in 6.4.5.7 Link set up from the CFP: LID use by the CFP in LINK-GRANT . 61 6.4.5.8 Established or re-established link: LID use by the CPP in 6.4.5.9 Established or re-established link: LID use by the CFP in 6.4.5.1 O Link r
24、e-establishment: LID use by the CPP in 6.4.5.1 1 Link re-establishment: LID use by the CFP in LINK-GRANT . 62 6.4.5.1 2 Validity of handshakes . 62 6.4.6 CFP Identity and Status Code Word (CIS) 62 6.5.1 Protocol Identifier (PI) (octet 1) 65 Fixed length packet format (FT = O) 56 use by the CFP in ID
25、-OK . 61 LINK-REQUEST 61 61 ID-OK and ID-LOST 61 ID-OK and ID-LOST 61 LINK-REQUEST 61 Variable length packet format (FT = 1) 64 6.5.2 L3-end (octet 1) . 65 ETSI I-ETS*300 232 94 3400855 O002376 158 W Page 6 LETS 300 131 : November 1994 6.5.3 Endwrd and code word nohem encoding (octet 1 ) 65 6.5.4 Co
26、ntrol (octet 21 . 65 6.5.5 Content . 66 6.5.6 Link supervisory messages 67 6.5.6.1 Transmit power level control . 68 6.5.6.2 Reserved for future use 68 6.5.6.3 Reserved for future use 68 6.5.6.4 Link re-establishment 68 6.5.6.5 Protocol initialisation (SABM), basic and extended 70 6.5.6.6 Protocol a
27、cknowledgment (SABM-ACK), basic and extended 72 6.5.6.7 Layer 2 code set shift . 73 6.5.6.7.1 Secondary service channel availability 74 6.5.6.8 NULL message 74 6.5.7 Fill-in . 75 6.6 Link establishment and re-establishment 75 6.6.1 Link set up from the CPP 75 6.6.2 Link re-establishment 76 6.6.3 Lin
28、k set up from the CFP 76 6.6.4 CFP polling . 77 6.6.5 CPP poll response . 78 6.6.6 CPP link set up and standard re-establishment diagram . 79 6.6.7 CFP link set up diagram . 80 6.7 Layer two link protocol set up and control 81 6.7.1 Layer two link protocol timings . 82 6.7.2 Layer two link operation
29、 82 6.7.2.1 Link initialisation (see subclause 6.5.6.5) 82 6.7.2.2 Packet transmission . 83 6.7.2.3 Packet reception . 83 6.8 Location tracking of CPPs 84 6.8.1 Polling only location tracking . 85 6.8.2 CIS assisted location tracking 85 6.8.2.1 CIS only transmissions . 86 6.8.2.2 Combined CIS/pollin
30、g transmissions 86 6.8.2.3 Requesting the service . 87 6.8.2.4 CIS monitoring by the CPP 87 6.8.2.5 In range indication to the user 88 6.6.8 Synchronous re-establishment diagram 81 7 Signalling layer three . 88 7.1 Single octet information elements 89 7.2 Variable length information elements 89 7.2.
31、1 Keypad information element (KP) 91 7.2.2 Display information element (DISP) . 94 7.2.3 Signal information element (SIG) 95 7.2.4 Feature activation information element (FA) . 97 7.2.4.1 Use of FAs for answering incoming calls 102 7.2.5 Feature indication information element (FI) 102 7.2.6 Channel
32、control information element (CC) 106 7.2.7 Initialisation information element (INIT) 107 7.2.8 Authentication request information element (AUTH-REO) . 108 7.2.9 Authentication response information element (AUTH-RES) . 109 7.2.1 O Terminal capabilities information element (TERM-CAP) . 110 7.2.1 1 Bas
33、e capabilities information element (BAS-CAP) . 112 7.2.1 2 Character information element (CHAR) 114 7.2.13 On-air (de-)registration acknowledge information element (OARAC) . 1 14 ETSI I-ETSx300 131 94 M 3400855 0002377 094 Page 7 LETS 300 131 : November 1994 7.2.1 4 Parameter set information element
34、 (PAR-SET) . 115 Parameter request information element (PAR-REO) 115 Parameter response information element (PAR-RES) . 115 (AUTH2-RES) . 116 Number of CPPs polled information element (NO-POLL) . 116 7.2.20 Change slot information element (CHANGE-SLOT) 117 7.2.21 Network authentication request (NET-
35、AUTH-REQ) 117 7.2.22 Network authentication response (NET-AUTH-RES) . 118 7.2.24 Key allocate information element (KEY-ALLOC) 119 Polling Lid information element (POLLING-LID) . 122 7.2.27 Data bearer capability information element (DAT-CAP) . 123 Data bearer response information element (DAT-RES) 1
36、24 Layer three mandatory syntax . 125 7.3.1 Access to layer three 125 Exit from layer three . 125 7.3.3 Emergency access 125 7.3.4 On-air registration 126 Parameter values for PAR-SET, PAR-REO, PAR-RES . 126 7.4.1 Parameter type = O; class of service . 126 7.4.3 Parameter type = 2; language preferen
37、ce 127 7.4.4 Parameter type = 3; enhanced display 127 Display Behaviour types 128 7.4.4.3 Display mapping . 128 7.4.4.5 Display behaviour 129 7.4.5 Parameter type = 4; Parameter List 130 7.4.6 Parameter type = 5; Preferred channels . 131 7.2.1 5 7.2.16 7.2.17 7.2.18 Alternative authentication respon
38、se information element 7.2.19 Alternative authentication request information element (AUTH2-REO) . 1 16 7.2.23 7.2.25 7.2.26 7.2.28 Terminal registration data allocate information element (TRD-ALLOC) . 11 8 Location registration parameters information element (LR-PARAMS) . . 1 20 7.3 7.3.2 7.4 7.4.2
39、 Parameter type = 1 ; extension number (BCD) . 126 7.4.4.1 7.4.4.2 Minimum character set 128 7.4.4.4 Scrolling behaviour and window origins . 128 8 Speech coding and telephony . 131 8.1 Definitions 132 8.1.1 Cordless Portable Part (CPP) . 132 8.1.2 Fixed geometry CPP . 132 8.1.3 Variable geometry CP
40、P . 132 8.1.4 CAI ADPCM voice codec (CIC = O) 132 8.2 Speech transmission algorithm 132 8.2.1 Speech coding algorithm 132 8.2.2 Codec for public access CFP . 132 8.3 Bit transmission sequence . 132 8.4 Frequency responses . 133 8.4.2 Receiving frequency response 133 Digital signal level . 134 8.6 Se
41、nding and receiving loudness ratings 134 CPP ambient noise rejection 135 Sidetone loudness ratings 136 Sidetone for analogue telephony . 136 Sidetone for digital telephony . 136 8.7.2.2 Listener sidetone . 136 8.4.1 Sending frequency response . 133 8.5 8.6.1 8.7.1 8.7.2 8.7 8.7.2.1 Talker sidetone 1
42、36 8.8 Clipping 136 ETSI I-ETSb30TJ 131 94 3400855 0002378 T20 Page a LETS 300 131: November 1994 8.9 8.10 8.1 1 8.12 8.13 8.14 8.15 8.16 Distortion . 136 8.9.1 Sending distortion 137 8.9.2 Receiving distortion . 137 8.9.3 Sidetone distortion 137 Noise 137 8.1 0.2 Sending (narrow-band noise) . 137 8
43、.10.3 Receiving 137 Delay 137 8.1 1.2 CFP delay 138 Terminal coupling loss 138 8.12.1 Weighted terminal coupling loss (TCLw) . 138 8.12.2 Stability loss (fixed geometry CPPs) 138 8.12.3 Stability loss (variable geometry CPPs) 138 8.1 2.4 CFP with a 4-wire interface 139 Out of band signals 139 8.1 3.
44、1 Discrimination against out-of-band input signals (sending) . 139 8.1 3.2 Spurious out-of-band signals (receiving) . 139 Sampling frequency level (receiving) 139 Acoustic shock . 139 8.15.1 Maximum intended sound pressure level . 139 8.1 5.2 Maximum possible sound pressure level . 140 Audible incom
45、ing call indication 140 8.16.1 Provided on CPP: sound pressure level 140 8.10.1 Sending . 137 8.1 1.1 CPPdelay 138 8.1 1.3 Network echo from a CFP with a 2-wire analogue interface 138 8.16.2 Generated other than through the earpiece: maximum sound pressure level 140 9 Radio frequency parametric and
46、system tests 140 Test conditions. power sources and ambient temperatures . 140 9.1.1 Normal and extreme test conditions 140 9.1.2 Test power source 140 9.1.3 Normal test conditions . 141 9.1.3.1 Normal temperature and humidity . 141 9.1.3.2 Normal test power source 141 9.1 -3.2.1 Mains voltage . 141
47、 9.1.3.2.2 Regulated lead acid battery power sources . 141 9.1.3.2.3 Nickel cadmium battery 141 9.1.3.2.4 Other power sources 141 Extreme test conditions . 141 9.1.4.1 Extreme temperatures . 141 9.1.4.2 Extreme test source voltages 141 9.1.4.2.1 Mains voltage . 141 9.1 -4.2.2 Regulated lead acid bat
48、tery power sources . 142 9.1 -4.2.3 Nickel cadmium battery 142 9.1.4.2.4 Other power sources 142 9.2 Electrical test conditions 142 9.2.2 Artificial antenna . 143 9.2.3 Test fixture for integral antenna . 143 9.2.4 of radiated fields . 143 9.1 9.1.4 9.1.5 Procedure for tests at extreme temperatures
49、142 9.2.1 Arrangements for signals to be applied to the fixed and portable receivers . 142 Test site and general arrangements for measurements involving the use 9.2.4.1 Outdoor test site . 143 ETSI I-ETS*3OO 131 94 R 3400855 0002379 9b7 = Page 9 LETS 300 131 : November 1994 9.3 9.2.4.2 Test antenna . 144 9.2.4.3 Substitution antenna 144 9.2.4.4 Optional additional indoor site 144 Combined transmitterheceiver test facility 145 Guidance on the use of radiation test sites . 146 chamber . 146 Transmitter . 146 9.2.5 9.2.6 9.2.7 Further optional alternative indoor test site using an anechoic 9.2.
