1、 ETSI TS 102 080 V1.4.1 (2003-07)Technical Specification Transmission and Multiplexing (TM);Integrated Services Digital Network (ISDN) basic rate access;Digital transmission system on metallic local linesETSI ETSI TS 102 080 V1.4.1 (2003-07) 2 Reference RTS/TM-06033 Keywords access, ADSL, basic, cod
2、ing, ISDN, local loop, network, rate, splitter, transmission, VDSL, xDSL ETSI 650 Route des Lucioles F-06921 Sophia Antipolis Cedex - FRANCE Tel.: +33 4 92 94 42 00 Fax: +33 4 93 65 47 16 Siret N 348 623 562 00017 - NAF 742 C Association but non lucratif enregistre la Sous-Prfecture de Grasse (06) N
3、 7803/88 Important notice Individual copies of the present document can be downloaded from: http:/www.etsi.org The present document may be made available in more than one electronic version or in print. In any case of existing or perceived difference in contents between such versions, the reference
4、version is the Portable Document Format (PDF). In case of dispute, the reference shall be the printing on ETSI printers of the PDF version kept on a specific network drive within ETSI Secretariat. Users of the present document should be aware that the document may be subject to revision or change of
5、 status. Information on the current status of this and other ETSI documents is available at http:/portal.etsi.org/tb/status/status.asp If you find errors in the present document, send your comment to: editoretsi.org Copyright Notification No part may be reproduced except as authorized by written per
6、mission. The copyright and the foregoing restriction extend to reproduction in all media. European Telecommunications Standards Institute 2003. All rights reserved. DECTTM, PLUGTESTSTM and UMTSTM are Trade Marks of ETSI registered for the benefit of its Members. TIPHONTMand the TIPHON logo are Trade
7、 Marks currently being registered by ETSI for the benefit of its Members. 3GPPTM is a Trade Mark of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners. ETSI ETSI TS 102 080 V1.4.1 (2003-07) 3 Contents Intellectual Property Rights9 Foreword.9 1 Scope 10 1.1 Objecti
8、ves.11 2 References 11 3 Definitions and abbreviations.13 3.1 Definitions13 3.2 Abbreviations .13 4 Functions 14 4.1 B-channel .14 4.2 D-channel .14 4.3 Bit timing14 4.4 Octet timing14 4.5 Frame alignment.15 4.6 Activation from LT or NT115 4.7 Deactivation .15 4.8 Power feeding.15 4.9 Operations and
9、 maintenance.15 5 Transmission medium 15 5.1 Description .15 5.2 Minimum ISDN requirements16 5.3 DLL physical characteristics 16 5.4 DLL characteristics 17 5.4.1 Principal characteristics 17 5.4.2 Crosstalk .17 5.4.3 Unbalance about earth 18 5.4.4 Impulse noise 18 5.4.5 Micro interruptions .18 6 Sys
10、tem performance.18 6.1 Performance requirements18 6.1.1 System performance with Regenerators (REGs) 19 6.2 Performance measurements19 6.2.1 DLL physical models19 6.2.2 Intrasystem crosstalk.22 6.2.3 Impulse noise modelling.22 6.2.3.1 Types of impulsive noise 22 6.2.3.2 Measurement arrangement 23 6.2
11、.4 Performance tests23 6.2.4.1 TEST 124 6.2.4.2 TEST 224 6.2.4.3 TEST 324 6.2.5 Micro interruption test 25 6.3 Unbalance about earth25 6.3.1 Longitudinal conversion loss 25 6.3.2 Longitudinal output voltage26 7 Transmission method .27 8 Activation/deactivation 28 8.1 General .28 8.2 Physical represe
12、ntation of signals 28 9 Operation and maintenance28 9.1 Operation and maintenance functions 28 ETSI ETSI TS 102 080 V1.4.1 (2003-07) 4 9.2 CL channel.28 9.2.1 CL channel definition.28 9.2.2 CL channel requirements .29 9.3 Metallic loop testing.29 10 Power feeding.29 10.1 General .29 10.2 Power feedi
13、ng functions.29 10.2.1 Power feeding of the REG 29 10.2.2 Power feeding of the NT1.29 10.2.3 Power feeding of the user network interface 29 10.3 DLL resistance .30 10.4 Wetting current.30 10.5 LT aspects 30 10.5.1 Feeding voltage from the LT 30 10.5.2 Dynamic power feeding requirements 30 10.5.3 LT
14、requirements for the reset of NT1 and REG .31 10.6 Power requirements of NT1 and regenerator .31 10.6.1 Power requirements of NT131 10.6.1.1 Static requirements31 10.6.1.2 Dynamic requirements 32 10.6.2 Power requirement of regenerator 33 10.6.2.1 Static requirements33 10.6.2.2 Dynamic requirements
15、33 10.6.3 Feeding voltage to the NT1 34 10.6.4 Voltage drop across the REG34 10.6.5 Reset of NT1 and REG .34 10.7 Current transient limitation.34 10.8 DC and low frequency AC termination of NT1 and REG34 11 Environmental conditions.34 11.1 Climatic conditions.34 11.2 Safety35 11.3 Overvoltage protec
16、tion.35 11.4 EMC .35 Annex A (normative): Definition of a system using 2B1Q line code36 A.1 Line code36 A.2 Line baud rate.36 A.2.1 NT1 clock tolerance .36 A.2.2 LT clock tolerance36 A.2.3 REG clock tolerance.36 A.3 Frame structure.36 A.3.1 Frame length.37 A.3.2 Bit allocation in direction LT to NT1
17、.37 A.3.3 Bit allocation in direction NT1 to LT.37 A.4 Frame word 38 A.4.1 Frame word in direction LT to NT1.38 A.4.2 Frame word in direction NT1 to LT .38 A.5 Frame alignment procedure38 A.6 Multiframe39 A.6.1 Multiframe word in direction NT1 to LT .39 A.6.2 Multiframe word in direction LT to NT1 .
18、39 A.7 Frame offset between LT to NT1 and NT1 to LT frames 39 A.8 CLchannel 39 A.8.1 Bit rate39 A.8.2 Structure .39 A.8.3 Protocol and procedures .39 ETSI ETSI TS 102 080 V1.4.1 (2003-07) 5 A.8.3.1 Error monitoring function.41 A.8.3.1.1 Cyclic redundancy check 41 A.8.3.1.2 CRC algorithms.41 A.8.3.1.
19、3 Bits covered by the CRC.43 A.8.3.2 Other CL channel functions .43 A.8.3.2.1 Far end block error bit, mandatory43 A.8.3.2.2 The ACT bit, mandatory .43 A.8.3.2.3 The DEA bit, mandatory.43 A.8.3.2.4 NT1 power status bits43 A.8.3.2.5 NT1 Test Mode (NTM) indicator bit 43 A.8.3.2.6 Cold-Start-Only (CSO)
20、 bit 43 A.8.3.2.7 DLL-Only-Activation (UOA) bit43 A.8.3.2.8 S/T-Interface-Activity-Indicator (SAI) bit 43 A.8.3.2.9 Alarm Indicator Bit (AIB).44 A.8.3.2.10 Network Indicator Bit (NIB) for network use .44 A.8.3.2.11 Reserved bits .44 A.8.3.3 Embedded Operations Channel (EOC) functions .44 A.8.3.3.1 E
21、OC frame 44 A.8.3.3.2 Mode of operation.44 A.8.3.3.3 Addressing 45 A.8.3.3.4 Definition of required EOC functions.45 A.8.3.3.5 Codes for required EOC functions 46 A.9 Scrambling .46 A.10 Start-up and control48 A.10.1 Signals used for start-up and control 49 A.10.1.1 Signals during start-up49 A.10.1.
22、2 Line rate during start-up .49 A.10.1.3 Start-up sequence50 A.10.1.4 Wake-up50 A.10.1.5 Progress indicators50 A.10.1.5.1 Start-up50 A.10.1.5.2 Deactivation 51 A.10.2 Timers 51 A.10.3 Description of the start-up procedure .52 A.10.3.1 Start-up from customer equipment .52 A.10.3.2 Start-up from the n
23、etwork.52 A.10.3.3 Sequence charts 52 A.10.3.4 Transparency.54 A.10.4 State transition table for the NT1 .54 A.10.5 State transition table for the LT54 A.10.6 Activation times .61 A.11 Jitter61 A.11.1 NT1 input signal jitter tolerance.61 A.11.2 NT1 output jitter limitations.62 A.11.3 LT input signal
24、 jitter tolerance .63 A.11.4 LT output jitter and synchronization 63 A.11.5 REG jitter tolerance and output jitter limitations .63 A.11.6 Test conditions for jitter measurements63 A.12 Transmitter output characteristics of NT1, REG and LT .63 A.12.1 Pulse amplitude 63 A.12.2 Pulse shape .63 A.12.3 S
25、ignal power.64 A.12.4 Power spectral density64 A.12.4.1 Sliding window PSD requirement 65 A.12.5 Transmitter linearity.65 A.12.5.1 Requirements 65 A.12.5.2 Linearity test method 66 A.13 Transmitter/receiver termination66 A.13.1 Impedance 66 ETSI ETSI TS 102 080 V1.4.1 (2003-07) 6 A.13.2 Return loss6
26、7 A.13.3 Unbalance about earth67 A.13.3.1 Longitudinal Conversion Loss67 Annex A1 (informative): Extension functions of the system using 2B1Q line code69 A1.1 Introduction 69 A1.2 NT1 Power status bits.69 A1.3 NTM bit69 A1.4 CSO bit.70 A1.5 UOA bit70 A1.6 SAI bit 70 A1.7 AIB.70 Annex A2 (informative
27、): Discussion of EOC addressing78 A2.1 Addresses 1 through 6 (intermediate elements) .78 A2.2 Action of intermediate elements.78 A2.3 Action of NT 78 A2.4 Summary 79 Annex B (normative): Definition of a system using Modified Monitoring State (MMS) 43 line code 80 B.1 Line code80 B.2 Symbol rate 80 B
28、.2.1 Clock symbol requirements80 B.2.1.1 NT1 free running clock accuracy80 B.2.1.2 LT clock tolerance 80 B.3 Frame structure.80 B.3.1 Frame length.81 B.3.2 Symbol allocation LT to NT1.81 B.3.3 Symbol allocation NT1 to LT.81 B.4 Frame word 81 B.4.1 Frame word in direction LT to NT1.81 B.4.2 Frame wor
29、d in direction NT1 to LT .81 B.5 Frame alignment procedure81 B.6 Multiframe82 B.7 Frame offset at NT1 .82 B.8 CL channel.82 B.8.1 Bit rate82 B.8.2 Structure .82 B.8.3 Protocols and procedures82 B.9 Scrambling .83 B.10 Activation/deactivation 83 B.10.1 Signals used for activation83 B.10.2 Definition
30、of internal timers .84 B.10.3 Description of the activation procedure85 B.10.4 NT1 state transition table .87 B.10.5 LT state transition table88 B.10.6 Activation times .90 ETSI ETSI TS 102 080 V1.4.1 (2003-07) 7 B.11 Jitter90 B.11.1 Limits of maximum tolerable input jitter .90 B.11.2 Output jitter
31、of NT1 in absence of input jitter 91 B.11.3 Timing extraction jitter.91 B.11.4 Test conditions for jitter measurements91 B.12 Transmitter output characteristics 91 B.12.1 Pulse amplitude 91 B.12.2 Pulse shape .91 B.12.3 Signal power.92 B.12.4 Power Spectral Density (PSD) .92 B.12.4.1 Sliding window
32、PSD requirement 93 B.12.5 Transmitter signal non-linearity .93 B.13 Transmitter/receiver termination94 B.13.1 Impedance 94 B.13.2 Return loss94 B.13.3 Longitudinal conversion loss94 Annex B1 (informative): Extension functions for a system with MMS43 line code.95 Annex C (informative): Detailed test
33、cable characteristics.96 C.1 Parameters for test cables.96 C.1.1 Parameters of 0,4 mm PE cable96 C.1.2 Parameters of 0,5 mm PE cable96 C.1.3 Parameters of 0,6 mm PE cable97 C.1.4 Parameters of 0,8 mm PE cable98 C.1.5 Parameters of 0,32 mm PVC cable.99 C.1.6 Parameters of 0,4 mm PVC cable.99 C.1.7 Pa
34、rameters of 0,63 mm PVC cable.100 C.2 Impedance plot of test loops.101 C.2.1 Impedance plot at 10 kHz.101 C.2.2 Impedance plot at 20 kHz.102 C.2.3 Impedance plot at 40 kHz.103 C.2.4 Impedance plot loop 9 104 C.3 Frequency response of test loops105 C.3.1 Frequency response of loop 2.105 C.3.2 Frequen
35、cy response of loop 3.105 C.3.3 Frequency response of loop 4.106 C.3.4 Frequency response of loop 5.106 C.3.5 Frequency response of loop 6.107 C.3.6 Frequency response of loop 7.107 C.3.7 Frequency response of loop 8.108 C.3.8 Frequency response loop 9 .108 Annex D (normative): ISDN systems requirem
36、ents when coexisting with ADSL or VDSL .109 D.1 Functional model and basic properties.109 D.1.1 Functional model109 D.1.2 Basic properties 109 D.2 Characteristics for the ISDN-Ports.110 D.2.1 Terminating Impedance of the xDSL Port .110 D.2.2 Total Power 111 D.2.2.1 ISDN System with 2B1Q line code 11
37、1 D.2.2.2 ISDN System with 4B3T line code.111 D.2.3 Power Spectral Density (PSD) .111 D.2.3.1 ISDN System with 2B1Q line code 112 D.2.3.2 ISDN System with 4B3T line code.112 D.2.4 Input Impedance.113 D.2.4.1 ADSL insertion loss114 D.2.4.2 VDSL insertion loss114 ETSI ETSI TS 102 080 V1.4.1 (2003-07)
38、8 D.2.5 Longitudinal conversion loss114 D.3 Performance Requirements 114 D.3.1 Performance Requirements for ISDN.114 D.3.2 Performance Requirements for xDSL 114 Annex E (informative): Bibliography.115 History 116 ETSI ETSI TS 102 080 V1.4.1 (2003-07) 9 Intellectual Property Rights IPRs essential or
39、potentially essential to the present document may have been declared to ETSI. The information pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found in ETSI SR 000 314: “Intellectual Property Rights (IPRs); Essential, or potentially Essen
40、tial, IPRs notified to ETSI in respect of ETSI standards“, which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web server (http:/webapp.etsi.org/IPR/home.asp). Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI.
41、No guarantee can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web server) which are, or may be, or may become, essential to the present document. Foreword This Technical Specification (TS) has been produced by ETSI Technical Committee Trans
42、mission and Multiplexing (TM). The present update includes an additional normative annex for ISDN-BA systems that includes an additional low pass filter in order to allow either ADSL or VDSL on the same pair. ETSI ETSI TS 102 080 V1.4.1 (2003-07) 101 Scope The present document covers the characteris
43、tics and parameters of a digital transmission system at the network side of the NT1 to form part of the access digital section for the Integrated Services Digital Network (ISDN) basic rate access using echo cancellation method. The present document specifies support for: - full duplex; and - bit seq
44、uence independent; transmission of two B-channels and one D-channel as defined in ITU-T Recommendation I.412 11 and the supplementary functions of the access digital section defined in ETR 001 6. The line codes of systems specified in the present document are 2B1Q (2 Binary 1 Quaternary) and MMS 43-
45、code (Modified Monitoring State 43-code). Systems using a 2B1Q line code are covered in annex A. Systems using a MMS line code are covered in annex B. Only one of the line codes has to be realized in a transmission system. Figure 1 shows the boundaries of the digital transmission system in relation
46、to the access digital section. TE NT1 LTETDigital transmission system(note)T V1reference pointreference pointAccess digital section_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ NOTE: In the present document, digital transmission system refers to a line system using metallic local lines. The use
47、of one intermediate regenerator (REG) may be required. Figure 1: Access digital section and transmission system boundaries The concept of the access digital section is used in order to allow a functional and procedural description and a definition of the network requirements. NOTE: The reference poi
48、nts T and V1 are not identical and therefore the access digital section is not symmetric. The concept of a digital transmission system is used in order to describe the characteristics of an implementation, using a specific medium, in support of the access digital section. The Annex D defines the cha
49、racteristics and parameters for an ISDN-BA system that includes an additional low pass part of a splitter to work on the same pair with a VDSL or an ADSL system. Both ISDN linecodes 2B1Q (2 Binary 1 Quaternary) and MMS 43-code (Modified Monitoring State 43-code) are considered. ETSI ETSI TS 102 080 V1.4.1 (2003-07) 111.1 Objectives Considering that the access digital section between the local exchange and the customer is one key element of the successful introduction of ISDN into the network, the following requirements for the specification have been taken into account: - to
