1、 TIA-1062 April 2006 Telecommunications Telephony Aspects of MLTS and Packetbased Equipment, including VoIP Interface Requirements for Packet-based Gateways ANSI/TIA-1062 - 2006 APPROVED: APRIL 6, 2006 REAFFIRMED: OCTOBER 17, 2011 NOTICE TIA Engineering Standards and Publications are designed to ser
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6、of regulatory limitations before its use. (From Standards Proposal No. 3-0190, formulated under the cognizance of the TIA TR-41.1, Subcommittee on Telephony Aspects of MLTS and VoIP Equipment). Published by TELECOMMUNICATIONS INDUSTRY ASSOCIATION Standards and Technology Department 2500 Wilson Boule
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22、NTAL ELEMENT OF THE USE OF THE CONTENTS HEREOF, AND THESE CONTENTS WOULD NOT BE PUBLISHED BY TIA WITHOUT SUCH LIMITATIONS. TIA-1062 Page 1 TABLE OF CONTENTS FOREWORD. 3 1 INTRODUCTION. 4 1.1 Purpose 4 1.2 Categories of Performance Criteria. 4 2 SCOPE 5 2.1 Conformance with Regulatory and Safety Stan
23、dards 5 3 NORMATIVE and INFORMATIVE REFERENCES 6 4 DEFINITIONS, ABBREVIATIONS and ACRONYMS 8 4.1 Definitions. 8 4.2 Abbreviations and Acronyms 10 5 DS1 and DSX-1 NETWORK INTERFACE REQUIREMENTS . 12 5.1 Electrical and Physical Characteristics 12 5.2 Electrical Interfaces.13 5.3 Signal Formats. 22 5.4
24、 ISDN Primary Rate Access (DSS1) Requirements . 39 5.5 ISDN Private Network Signaling (PSS1 / QSIG) Requirements 39 5.6 Channel-associated Signaling and Supervision Requirements 41 6 TRANSMISSION REQUIREMENTS 45 6.1 General 45 6.2 Echo Cancellation 45 7 DTMF SIGNALING REQUIREMENTS . 46 7.1 General 4
25、6 7.2 DTMF Generator Characteristics 47 7.3 DTMF Receiver Characteristics 48 8 CALL PROGRESS SIGNALING. 50 8.1 Call Progress Signals Sent to the VoIP networks 50 8.2 Definitions of Call Progress Signals 53 8.3 Electrical Standards for Call Progress Signals 54 Annex A. Bibliography 56 LIST OF FIGURES
26、 Figure 1 - Packet-based Gateway 1544 kbps Interface Connections12 Figure 2 - DSX-1 Cross-Connect Isolated Pulse Template 14 Figure 3 - DS1 Packet-based Gateway Interface Isolated Pulse Template.16 Figure 4 - Pulse Amplitude Envelope with 60 Hz Longitudinal Currents17 Figure 5 - Frequency Weighting
27、Function for Band 1 Jitter Specification.20 Figure 6 - Frequency Weighting Function for Band 2 Jitter Specification.20 Figure 7 - Example of Bipolar Eight Zero Substitution (B8ZS).21 Figure 8 - 1544 kbps Signal Format22 Figure 9 - Extended Superframe Framing (ESF) F-Bit Assignments .24 Figure 10 - E
28、SF/CMB Relationship25 Figure 11 - Mathematical Check-Bit Generation25 Figure 12 - Performance Report Message Structure.30 TIA-1062 Page 2 Figure 13 - QSIG Protocol Model.40 LIST OF TABLES Table 1 - Assigned Bit-patterned ESF Data Link Messages.32 Table 2 - Unassigned ESF Data Link Codewords 33 Table
29、 3 - Example - ESF Data Link Performance Report Messages34 Table 4 - Interface Type and Channel Unit Equivalent 42 Table 5 - Standard Call Progress Signals51 Table 6 - Other Call Progress Signals.52 TIA-1062 Page 3 FOREWORD (This foreword is not part of this standard.) This document is a TIA Telecom
30、munications Standard produced by TIA Engineering Technical Subcommittee TR-41.1 of Committee TR-41. This standard was developed in accordance with TIA procedural guidelines, and represents the consensus position of the subcommittee TR-41.1, which served as the formulating group. The TR-41.1 Engineer
31、ing Technical Subcommittee acknowledges the contribution made by the following individuals in the development of this standard. Name Representing Trone Bishop Verizon Robert Chrostowski Iwatsu Richard Frank Dietrich Lockard Group Kirit Patel Cisco Systems Joachim Pomy Avaya Vice-chair Tailey Tung Si
32、emens Communications, Inc. Chair i.e., equipment designed for operation with DS1 facility losses of up to 6 dB at 772 kHz. For example, using 22 gauge ABAM type cable, which has a loss of 6 dB at 772 kHz for 200 meters (655 feet), the distance between the DSX-1 interface in the packet-based gateway
33、and a cross-connect point can be up to 200 meters (655 feet). The distance from the cross-connect point to the DSX-1 interface in an NCTE for this example can also be up to 200 meters (655 feet). Thus, a maximum separation (based on DSX-1 connectivity) of 400 meters (1310 feet) is possible in this e
34、xample. TIA-1062 Page 14 Time in Unit Intervals-0.500.511.5-1 -0.5 0 0.5 1 1.5Normalized AmplitudeMaximumcurveMinimumcurveNote: 1 Unit Interval = 648 nanoseconds DSX-1 Pulse Template Corner Points Minimum Curve Maximum Curve Time (Unit Intervals) Normalized Amplitude Time (Unit Intervals) Normalized
35、 Amplitude -0.77 -0.05 -0.77 0.05 -0.23 -0.05 -0.39 0.05-0.23 0.50 -0.27 0.80 -0.15 0.95 -0.27 1.150.00 0.95 -0.12 1.15 0.15 0.90 0.00 1.050.23 0.50 0.27 1.05 0.23 -0.45 0.35 -0.070.46 -0.45 0.93 0.05 0.66 -0.20 1.16 0.050.93 -0.05 1.16 -0.05 Successive corner points are joined by straight lines to
36、form the template shown above Figure 2 - DSX-1 Cross-Connect Isolated Pulse Template TIA-1062 Page 15 5.2.2 DS1 Electrical Interface The electrical specifications describe the characteristics of the signals received and transmitted to the DS1 facility at the DS1 packet-based gateway interface (Figur
37、e 1). The signal delivered by the T1 carrier is received on the packet-based gateway T1 and R1 leads. The signal delivered by the packet-based gateway to the T1 carrier is transmitted on the T and R leads. The characteristics of the signals at the DS1 packet-based gateway interface are not symmetric
38、al; i.e., some of the electrical requirements differ for the transmit and receive signals. The terms transmit and receive are used to refer to signals from the perspective of the packet-based gateway. The requirements for the electrical interface are summarized below: Line Rate: 1544 kbps 32 ppm (50
39、 b/s). The tolerance is for operating without any synchronization to a network clock (e.g., self-timed, free-running). During synchronized operation, the line-rate accuracy shall be as specified in ANSI/TIA-594-B (Ref 8) and ANSI T1.101 (Ref 7) for the appropriate stratum level. Line Code: B8ZS. (Se
40、e text for pulse density constraints.) Test Load: Resistive termination of 100 5%. Pulse amplitude An isolated pulse transmitted from the Network to the packet-based gateway shall have a base-to-peak amplitude between 2.25 V and 3.6 V. An isolated pulse transmitted from the packet-based gateway to t
41、he Network shall have a base-to-peak amplitude between 2.4 V and 3.6 V. Pulse Shape: An isolated pulse shall fit the template shown in Figure 3. An isolated pulse is a pulse preceded by at least four zeros, and followed by at least one or more zeros. Power Levels: For an all “ones“ transmitted patte
42、rn, the power in a 3 1 kHz band centered about 772 kHz shall be in the range 12.4 to 19.7 dBm. The power in a 3 1 kHz band centered about 1544 kHz shall be at least 25 dB less than the power measured at 772 kHz. Pulse Imbalance: In any window of 17 consecutive bits, the maximum variation in pulse am
43、plitudes shall be less than 200 mV and the maximum variation in pulse width at half amplitude shall be less than 20 ns. 60 Hz Pulse Amplitude Variation: Pulse amplitude may vary at a 60 Hz rate as a result of longitudinal currents in the powering loops of T1 repeaters. In such cases, the envelope of
44、 the pulse amplitude shall be limited as shown in Figure 4. Any pulse amplitude in the ranges given above may be used as the 100% point in Figure 4. Notes: 1. The signal received by the packet-based gateway at the network interface has the characteristics specified above, with the exception that the
45、 pulse characteristics will be those of the standard signal transmitted through a cable pair with a loss in the range of 0.0 to 16.5 dB at 772 kHz into a 100 termination. The lower limit of the standard pulse amplitude shall be 2.25 V rather than 2.4 V. 2. Older equipment may have rate variations up
46、 to 128ppm ( 200 b/s). TIA-1062 Page 16 Time in Unit Intervals-0.500.000.501.001.50-1.00 -0.50 0.00 0.50 1.00 1.50Normalized AmplitudeMaximumcurveMinimumcurveNote: 1 Unit Interval = 648 nanoseconds DS1 Pulse Template Corner Points Minimum Curve Maximum Curve Time (Unit Intervals) Normalized Amplitud
47、e Time (Unit Intervals) Normalized Amplitude -0.77 -0.05 -0.77 0.05 -0.23 -0.05 -0.39 0.05-0.23 0.50 -0.27 0.80 -0.15 0.90 -0.27 1.200.00 0.95 -0.12 1.20 0.15 0.90 0.00 1.050.23 0.50 0.27 1.05 0.23 -0.45 0.34 -0.050.46 -0.45 0.77 0.05 0.61 -0.26 1.16 0.050.93 -0.05 1.16 -0.05 Successive corner point
48、s are joined by straight lines to form the template shown below: Figure 3 - DS1 Packet-based Gateway Interface Isolated Pulse Template TIA-1062 Page 17 Time (ms)Pulse Amplitude(Percent ofReference)11010075-75-100-1100 8.3 11.3 14.3 16.71/60Hz = 16.7 ms5.3Notes: 1. Envelope of pulse amplitudes shall
49、lie within the shaded areas. 2. Reference (100 percent point) may be any amplitude in the range of pulse amplitudes (see text). Figure 4 - Pulse Amplitude Envelope with 60 Hz Longitudinal Currents 5.2.2.1 Line Build Out (LBO) Networks To ensure that a usable DS1 signal is available to the public and private network, selectable artificial lines, or equivalent losses, shall be included in the transmit direction as part of the packet-based gateway interface circuitry. As a minimum, selectable values of 0.0, 7.5, and 15.0 dB of loss at 772 kHz shall be avai
