1、 ANSI/TIA-464-C-2002 APPROVED: OCTOBER 29, 2002 WITHDRAWN: MAY 3, 2013 TIA-464-C (Revision of TIA/EIA-464-B) October 2002Telecommunications- Multiline Terminal Systems- Requirements for PBX Switching Equipment NOTICE TIA Engineering Standards and Publications are designed to serve the public interes
2、t through eliminating misunderstandings between manufacturers and purchasers, facilitating interchangeability and improvement of products, and assisting the purchaser in selecting and obtaining with minimum delay the proper product for their particular need. The existence of such Standards and Publi
3、cations shall not in any respect preclude any member or non-member of TIA from manufacturing or selling products not conforming to such Standards and Publications. Neither shall the existence of such Standards and Publications preclude their voluntary use by Non-TIA members, either domestically or i
4、nternationally. Standards and Publications are adopted by TIA in accordance with the American National Standards Institute (ANSI) patent policy. By such action, TIA does not assume any liability to any patent owner, nor does it assume any obligation whatever to parties adopting the Standard or Publi
5、cation. This Standard does not purport to address all safety problems associated with its use or all applicable regulatory requirements. It is the responsibility of the user of this Standard to establish appropriate safety and health practices and to determine the applicability of regulatory limitat
6、ions before its use. Any use of trademarks in this document are for information purposes and do not constitute an endorsement by TIA or this committee of the products or services of the company. (From Project No. 3-3673-RV3-WD, formulated under the cognizance of the TIA TR-41 Performance and Accessi
7、bility for Communications Products.) Published by TELECOMMUNICATIONS INDUSTRY ASSOCIATION Technology (b) there is no assurance that the Document will be approved by any Committee of TIA or any other body in its present or any other form; (c) the Document may be amended, modified or changed in the st
8、andards development or any editing process. The use or practice of contents of this Document may involve the use of intellectual property rights (“IPR”), including pending or issued patents, or copyrights, owned by one or more parties. TIA makes no search or investigation for IPR. When IPR consistin
9、g of patents and published pending patent applications are claimed and called to TIAs attention, a statement from the holder thereof is requested, all in accordance with the Manual. TIA takes no position with reference to, and disclaims any obligation to investigate or inquire into, the scope or val
10、idity of any claims of IPR. TIA will neither be a party to discussions of any licensing terms or conditions, which are instead left to the parties involved, nor will TIA opine or judge whether proposed licensing terms or conditions are reasonable or non-discriminatory. TIA does not warrant or repres
11、ent that procedures or practices suggested or provided in the Manual have been complied with as respects the Document or its contents. If the Document contains one or more Normative References to a document published by another organization (“other SSO”) engaged in the formulation, development or pu
12、blication of standards (whether designated as a standard, specification, recommendation or otherwise), whether such reference consists of mandatory, alternate or optional elements (as defined in the TIA Procedures for American National Standards) then (i) TIA disclaims any duty or obligation to sear
13、ch or investigate the records of any other SSO for IPR or letters of assurance relating to any such Normative Reference; (ii) TIAs policy of encouragement of voluntary disclosure (see TIA Procedures for American National Standards Annex C.1.2.3) of Essential Patent(s) and published pending patent ap
14、plications shall apply; and (iii) Information as to claims of IPR in the records or publications of the other SSO shall not constitute identification to TIA of a claim of Essential Patent(s) or published pending patent applications. TIA does not enforce or monitor compliance with the contents of the
15、 Document. TIA does not certify, inspect, test or otherwise investigate products, designs or services or any claims of compliance with the contents of the Document. ALL WARRANTIES, EXPRESS OR IMPLIED, ARE DISCLAIMED, INCLUDING WITHOUT LIMITATION, ANY AND ALL WARRANTIES CONCERNING THE ACCURACY OF THE
16、 CONTENTS, ITS FITNESS OR APPROPRIATENESS FOR A PARTICULAR PURPOSE OR USE, ITS MERCHANTABILITY AND ITS NONINFRINGEMENT OF ANY THIRD PARTYS INTELLECTUAL PROPERTY RIGHTS. TIA EXPRESSLY DISCLAIMS ANY AND ALL RESPONSIBILITIES FOR THE ACCURACY OF THE CONTENTS AND MAKES NO REPRESENTATIONS OR WARRANTIES RE
17、GARDING THE CONTENTS COMPLIANCE WITH ANY APPLICABLE STATUTE, RULE OR REGULATION, OR THE SAFETY OR HEALTH EFFECTS OF THE CONTENTS OR ANY PRODUCT OR SERVICE REFERRED TO IN THE DOCUMENT OR PRODUCED OR RENDERED TO COMPLY WITH THE CONTENTS. TIA SHALL NOT BE LIABLE FOR ANY AND ALL DAMAGES, DIRECT OR INDIR
18、ECT, ARISING FROM OR RELATING TO ANY USE OF THE CONTENTS CONTAINED HEREIN, INCLUDING WITHOUT LIMITATION ANY AND ALL INDIRECT, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES (INCLUDING DAMAGES FOR LOSS OF BUSINESS, LOSS OF PROFITS, LITIGATION, OR THE LIKE), WHETHER BASED UPON BREACH OF CONTRACT, BREACH
19、 OF WARRANTY, TORT (INCLUDING NEGLIGENCE), PRODUCT LIABILITY OR OTHERWISE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. THE FOREGOING NEGATION OF DAMAGES IS A FUNDAMENTAL ELEMENT OF THE USE OF THE CONTENTS HEREOF, AND THESE CONTENTS WOULD NOT BE PUBLISHED BY TIA WITHOUT SUCH LIMITATIONS. TIA-
20、464-C Page i TABLE OF CONTENTS 1 INTRODUCTION . 1 1.1 General. 1 1.2 Purpose. 1 1.3 Categories of Performance Criteria . 1 2 SCOPE. 2 2.1 General. 2 2.2 Compliance Reference Point 2 2.3 Compliance Interpretation . 2 2.4 Conformance with Regulatory and Safety Standards 3 2.5 Support of Enhanced 911 C
21、alling 3 3 NORMATIVE AND INFORMATIVE REFERENCES . 4 4 DEFINITIONS. 7 4.1 Digital Switching . 7 4.2 PBX Definitions. 7 4.3 Interface Definitions 7 4.3.1 DAL - Digital Access Line 7 4.3.2 AAL(A) - Analog Access Line (Analog) 7 4.3.3 AAL(D) - Analog Access Line (Digital). 7 4.3.4 ATT - Analog Tie Trunk
22、. 7 4.3.5 DGS - Digital Station 7 4.3.6 ONS - On Premises Station. 7 4.3.7 OPS - Off Premises Station. 8 4.4 Abbreviations and Acronyms. 8 5 INTERFACE REQUIREMENTS 10 5.1 Public Network Access Interface - Analog. 10 5.1.1 Supervision - Ground Start Access Lines 10 5.1.2 Supervision - Loop Start Acce
23、ss Lines . 25 5.1.3 One-Way Direct Inward Dialing (DID) Network Access Interface. 30 5.1.4 System Failure Transfer 44 5.1.5 One-way 911 CAMA Access Interface. 52 5.2 Network Interface - Digital (DS1 and DSX-1) 53 5.2.1 Electrical and Physical Characteristics of the 1.544 Mb/s Interface 53 5.2.2 Sign
24、al Formats for 1.544 Mb/s Facilities 64 5.3 Network Interface - Digital (ISDN) 84 5.3.1 ISDN Primary Rate Access Requirements (DSS1). 84 5.3.2 ISDN Private Network Signaling Requirements (PSS1/QSIG) 84 5.3.3 ISDN Basic Rate U, S and T Reference Points. 87 5.4 Analog Station Interface 88 5.4.1 Genera
25、l 88 5.4.2 Battery Voltage . 88 5.4.3 Ringing 94 5.4.4 Ringing Trip 95 5.4.5 Ringing Pre-trip. 95 5.4.6 Loop Supervision 97 5.4.7 Recognition of Address Signaling 98 5.4.8 Alerting . 98 TIA-464-C Page ii 5.4.9 Voice Path on Answer. 98 5.4.10 Call Supervision 98 6 TRANSMISSION REQUIREMENTS . 100 6.1
26、Preamble. 100 6.1.1 General 100 6.1.2 Requirements for Analog PBXs 100 6.1.3 Requirements for Digital PBXs 100 6.1.4 Measurement Method 101 6.2 Loss Plan 103 6.2.1 Introduction. 103 6.2.2 Insertion Loss Definition 103 6.2.3 Insertion Loss Criteria for PBX 104 6.2.4 PBX Loss Plan Assumptions 106 6.2.
27、5 PBX Loss Ranges and TIA/EIA/IS-968 Requirements. 107 6.3 Loss Parameters . 112 6.3.1 Frequency Response (Attenuation Distortion) 112 6.3.2 Overload of PBXs . 114 6.3.3 Overload Compression 114 6.3.4 Tracking Error. 114 6.4 Echo Control, Return Loss, and Delay 115 6.4.1 Hybrid Balance Requirements
28、115 6.4.2 Hybrid Balance Measurement Technique. 117 6.4.3 Input Impedance Requirements. 119 6.4.4 Input Impedance Measurement Technique . 121 6.4.5 Echo Control Considerations 124 6.4.6 Echo Path Delay 124 6.5 Noise and Distortion Impairments . 125 6.5.1 Idle-Channel Noise 125 6.5.2 Longitudinal Bal
29、ance 127 6.5.3 Crosstalk 136 6.5.4 Quantization Distortion. 138 6.5.5 Single-Frequency Distortion . 138 6.6 Other Impairments . 139 6.6.1 Intermodulation Distortion 139 6.6.2 Envelope Delay . 140 6.6.3 Impulse Noise 140 6.6.4 Jitter. 140 6.6.5 Gain Hit. 140 6.6.6 Phase Hit . 141 6.6.7 Dropout . 141
30、6.6.8 Peak Power to Average Power Ratio (P/AR) 141 6.7 Digital Data Transmission Through The PBX 142 6.7.1 Data Path Characteristics 142 6.7.2 Messages for Call Progress . 143 6.8 Signal Levels 144 7 SIGNALING REQUIREMENTS . 145 7.1 Network Signaling - Analog 145 7.1.1 Definition 145 7.1.2 Criteria
31、for DTMF Signal Processing . 145 7.1.3 Signaling Frequencies . 145 TIA-464-C Page iii 7.1.4 DTMF Generator Characteristics 146 7.1.5 DTMF Receiver Characteristics 147 7.2 Digital Signaling and Supervision . 153 7.2.1 General 153 7.2.2 DID, 911-CAMA, and Tie Trunk Signaling . 154 7.2.3 Loop Start Acc
32、ess Lines (including loop start FX/WATS Trunk) . 162 7.2.4 Ground Start Access Lines (including ground start FX/WATS trunk). 165 7.2.5 Off-Premises Station . 169 7.2.6 Private Line Signaling. 171 7.2.7 Table of Signaling States 172 7.2.8 ESF Signaling Formats 175 7.3 Call Progress Signaling 178 7.3.
33、1 Definition 178 7.3.2 Call Progress Signals Used in PBXs. 178 7.3.3 Call Progress Signals Sent to the PSTN 178 7.3.4 Definitions of Call Progress Signals . 182 7.3.5 Electrical Standards for Call Progress Signals 184 8 APPLICATION NOTES 185 8.1 Proprietary Terminals 185 8.2 REN Scaling. 185 ANNEX A
34、. ANSI/TIA/EIA-464-B LOSS PLAN. 187 A1 Preamble. 187 A1.1 General 187 A1.2 Definitions and Abbreviations 187 A2 Measurement Method Level Translation. 191 A3 Loss Plan 191 A3.1 Insertion Loss Criteria for ISPBX. 191 A3.2 ISPBX Loss Ranges 194 A3.3 Loss Variation. 194 A4 Interface Levels 195 A4.1 Refe
35、rence Signal Power Levels 195 A4.2 Acoustic Reference Levels 196 ANNEX B. TELEPHONY LOSS LEVEL PLANNING - OVERVIEW 200 B1 Introduction 200 B2 Send and Receive Levels . 200 B2.1 Terminal Equipment Loudness Ratings 201 B2.2 Overall Loudness Ratings . 202 B2.3 Optimum Overall Loudness Ratings. 203 B2.4
36、 Desirable Losses versus TIA/EIA/IS-968 Standard 204 B2.5 Network Interface Loudness Ratings 204 B2.6 Port-to-Port Loss Allocation . 206 B2.7 Open Loop Loss and Network Stability 206 B3 Reference Levels 208 B3.1 Zero-Level Point . 208 B3.2 0 dBm0 Definition. 208 B3.3 Digital Milliwatt 208 B3.4 Trans
37、mission Level Translation 208 ANNEX C. LOSS DEFINITIONS 210 ANNEX D. PRIVATE NETWORK SYNCHRONIZATION PLANNING GUIDELINES . 212 TIA-464-C Page iv D1 Hierarchical Synchronization. 212 D2 Overview Of Private Digital Networks 214 D3 Coordination And Design Of Private Digital Network Synchronization Plan
38、s. 214 D3.1 Private Digital Network Owner Responsibilities 214 D3.2 LEC/IEC Responsibilities . 214 D3.3 Vendor Responsibilities 214 D3.4 Engineering Private Digital Network Synchronization Interfaces 215 D3.5 Source of PRS-Traceable References . 216 D3.6 Synchronization Interface Considerations 217
39、D3.7 Intra/lnter Installation Synchronization Source 219 D3.8 Avoidance of Timing Loops . 219 D4 Synchronization Network Operations 221 D4.1 Installation Tests . 222 D4.2 Detection of Network Failures 222 D4.3 Restoration 222 D5 Synchronized Private Network Examples 223 D5.l High Level Concepts. 223
40、 D5.2 Example 1 224 D5.3 Example 2 224 D6 Conclusion . 224 ANNEX E. DIAL PULSE SIGNALING. 225 E1 Foreword 225 E2 Outgoing Dial Pulse Signaling To The Network. 225 E2.1 Network Characteristics 225 E2.2 PBX Characteristics 225 E2.3 Waveform Criteria with Noninductive Termination. 226 E2.4 Waveform Cri
41、teria with Inductive Termination . 226 E2.5 Additional Requirements 227 E3 Incoming Dial Pulse Signaling From Terminal Equipment. 232 E3.1 General 232 E3.2 Loop Characteristics . 232 E3.3 Dial Pulse Detection 232 E4 E e.g., proprietary digital station interfaces. In such systems, the station apparat
42、us must be considered as a whole with the PBX and its associated station wiring, and the overall system must be described in terms of an acoustic (user) to an electrical (network) standard. The requirements in this standard assume a ringer equivalence number (REN) of 5. If the PBX has a REN of less
43、than 5, then the requirements designated by the parenthetical expression (REN) need to be appropriately scaled in accordance with Section 4.7 of the TIA/EIA/IS-968 Standard (Ref 42) 2.2 Compliance Reference Point Compliance with this standard is determined at the PBX interface boundaries and is not
44、to be construed as a constraint on the internal coding or switching techniques of the PBX. 2.3 Compliance Interpretation A PBX complies with this standard when it conforms to the requirements applicable to the interfaces with which it is equipped. For satisfactory service, a PBX should be capable, t
45、hrough the proper selection of equipment options, of satisfying the requirements applicable to its serving area. The requirements for the individual types of PBX interfaces vary between public network carriers and, in some cases, between network switching machines; therefore, multiple options are st
46、ated for satisfying a particular requirement. TIA-464-C Page 3 2.4 Conformance with Regulatory and Safety Standards This standard is intended to be in conformance with Part 68 of the FCC Rules and Regulations (Ref 4), TIA/EIA/IS-968 standard (Ref 42) and with the safety requirements specified in UL
47、60950, Third Edition, Standard for Safety of Information Technology Equipment (Ref 5)1, but it is not limited to the scope of these rules or requirements. If the requirements in either of these documents are more stringent than those contained in this standard, the provisions of those documents appl
48、y. In addition to the requirements in this standard, a PBX is subject to environmental considerations given in ANSI/EIA/TIA-571-A-1998, Telecommunications User Premises Equipment Environmental Considerations (Ref 6). 2.5 Support of Enhanced 911 Calling TIA/EIA-689, PBX and KTS Support of Enhanced 9-
49、1-1 Emergency Service Calling (Ref 36), contains requirements for PBX and KTS support of enhanced 9-1-1 calling. It was developed as a companion document to this standard. It addresses network interface signaling requirements for support of enhanced 911, when a 911 call is dialed. It also addresses station-side support features, such as three-digit 911 dialing and attendant-notification when a 911 call is dialed. The requirements in that document are incorporated here by reference, and should be considered a
