1、 TIA STANDARD Telecommunications Telephone Terminal Equipment Technical Requirements for Connection of Terminal Equipment to the Telephone Network Addendum 3 TIA-968-A-3 (Addendum 3 to TIA-968-A) February 2005TELECOMMUNICATIONS INDUSTRY ASSOCIATION Representing the telecommunications industry in ass
2、ociation with the Electronic Industries Alliance ANSI/TIA-968-A-3 2004 Approved: December 9,2004 Adopted by ACTA February 2, 2005 Copyright Telecommunications Industry Association Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,
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21、E PUBLISHED BY TIA WITHOUT SUCH LIMITATIONS. Copyright Telecommunications Industry Association Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-PREFACE This document, TIA-968-A-3, Telecommunications Telephone Terminal Equipment
22、Technical Requirements for Connection of Terminal Equipment to the Telephone Network- Addendum 3, has been established pursuant to the Federal Communication Commissions (“FCC”) Report and Order in the 2000 Biennial Review of Part 68 of the Commissions Rules and Regulations, CC Docket No. 99-216, FCC
23、 00-400, adopted November 9, 2000 and released December 21, 2000 (“Order” or “R the indicated slopes are approximate. 3.) Above 25.875 kHz, the peak PSD shall be measured with a minimum resolution bandwidth of 10 kHz. 4.) The power in a 1 MHz sliding window is averaged over a 1 MHz bandwidth, starti
24、ng at the measurement frequency. NEW CLAUSE 4.5.9.1.3 4.5.9.1.3 Power Spectral Density for Extended Upstream Operation As an alternative to meeting the PSD mask limitations of 4.5.9.1.2, ADSL equipment shall comply with one or more of the extended upstream spectral masks (EU-32, EU-36, etc.) defined
25、 in the following figures and tables. The passband is defined as the band from 25.875 kHz to an upperbound frequency f1. It is the widest possible band used. Limits defined within the passband apply also to any narrower bands used. The following figure and tables define the alternative familiy of sp
26、ectral masks for the transmit signal. The low-frequency stop-band is defined as frequencies below 25.875 kHz, the high-frequency stop-band is defined as frequencies greater than the passband upperbound frequency f1. The Inband_peak_PSD, PSD_int and the frequencies f1 and f_int shall be as defined in
27、 the Table for Inband peak PSD, PSD_int and the frequencies f1 and f_int Copyright Telecommunications Industry Association Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-TTIA-968-A-3 8Frequency (kHz) PSD level (dBm/Hz) Measure
28、ment BW 0.200 -97.5 100 Hz 4 -97.5 Hz 4 -92.5 100 Hz 10 interpolated 10 kHz 25.875 Inband_peak_PSD 10 kHz f1 Inband_peak_PSD 10 kHz f_int PSD_int 10 kHz 686 -100 kHz 5275 -100 10 kHz 12000 -100 kHz Additionally the PSD mask shall be satisfying following requirements: Frequency (kHz) PSD level (dBm/H
29、z) Measurement BW 1411 -100 1 MHz 1630 -110 MHz 5275 -112 1 MHz 12000 -112 MHz NOTE 1 - All PSD measurements are in 100 . NOTE 2 - The breakpoint frequencies and PSD values are exact; the indicated slopes are approximate. The breakpoints in the tables shall be connected by linear straight lines on a
30、 dB/log(f) plot. NOTE 3 - MBW specifies the Measurement Bandwidth. The MBW specified for a certain breakpoint with frequency fi is applicable for all frequencies satisfying fi f fj, where fj is the frequency of the next specified breakpoint. NOTE 4 - The PSD in a 1 MHz sliding window is measured in
31、a 1 MHz bandwidth, starting at the measurement frequency i.e. power in the f, f + 1 MHz window shall conform to the specification at frequency f. ADSL Modem Extended Upstream Transmitter PSD Masks Copyright Telecommunications Industry Association Provided by IHS under license with EIANot for ResaleN
32、o reproduction or networking permitted without license from IHS-,-,-TIA-968-A-3 9Table for Inband peak PSD, PSD_int and the frequencies f1 and f_int Upstream Mask- Number Designator Inband Peak PSD (dBm/Hz) Frequency f1 (kHz) Intercept Frequency f_int (kHz) Intercept PSD Level PSD_int (dBm/Hz) 1 EU-
33、32 -34.5 138.00 242.92 -93.2 2 EU-36 -35.0 155.25 274.00 -94.0 3 EU-40 -35.5 172.50 305.16 -94.7 4 EU-44 -35.9 189.75 336.40 -95.4 5 EU-48 -36.3 207.00 367.69 -95.9 6 EU-52 -36.6 224.25 399.04 -96.5 7 EU-56 -36.9 241.50 430.45 -97.0 8 EU-60 -37.2 258.75 461.90 -97.4 9 EU-64 -37.5 276.00 493.41 -97.9
34、 NEW CLAUSE 4.5.9.1.4 4.5.9.1.4 Longitudinal Output Voltage ADSL modems shall meet the voiceband longitudinal voltage limitations of 4.5.4.1 as well as the limitations of 4.5.5.2.1 for a center frequency of 8 kHz, which covers the frequency span from 4 to 12 kHz. In addition, using the illustrative
35、longitudinal output voltage measurement circuit in Figure 4.5, ADSL modems shall limit longitudinal output voltage to the values shown in the table below: Frequency Band (kHz) Maximum Longitudinal Output Voltage (rms) in all 4 KHz bands averaged over a minimum period of 1 second 10 f fb-50 dBV (or -
36、51.3 dBV using a 3 kHz bandwidth) fb f 4fb-80 dBV (or -81.3 dBV using a 3 kHz bandwidth) NOTES: 1.) The first frequency band is the operating band as limited by the frequency point fb;the frequency at which the PSD is approximately 30 dB down from the peak mask value. For ADSL modems that do not sup
37、port extended upstream operation, this frequency is 211 kHz so the maximum frequency to which the longitudinal output voltage is measured in the upper band is 844 kHz. 2.) Alternatively, the measured 30 dB points may be used to define the operating bands lower and upper frequency points. 3.) The alt
38、ernative requirements of -51.3 dBV and -81.3 dBV include a -1.3 dB correction factor associated with using a 3 kHz bandwidth rather than the ideal 4 kHz bandwidth. NEW CLAUSE 4.5.9.2 4.5.9.2 Generic Requirements for other Types of DSL Terminal Equipment. Copyright Telecommunications Industry Associa
39、tion Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-TTIA-968-A-3 10NEW CLAUSE 4.5.9.2.1 4.5.9.2.1 Total Average Power and PSD for Generic Stationary Modems Approved DSL terminal equipment meeting the requirements of 6.4.3 of T
40、1.417-2003 shall operate within the TU-R Power Spectral Density (PSD) requirements and total average power limits for each of the supported PSD masks defined in: - 5.4.1.1 and 6.3.1 of T1.417-2003 for 2B1Q SDSL; - 5.4.2.1 and 6.3.2 of T1.417-2003 for G.SHDSL; - 5.4.3.1 and 6.3.3 of T1.417-2003 for H
41、DSL4; - 5.3.1.1 and 6.1 of T1.417-2003 for Spectrum Management Class 1 (SMC 1, e.g IDSL); - 5.3.2.1 and 6.1 of T1.417-2003 for Spectrum Management Class 2 (SMC 2); - 5.3.3.1 and 6.1 of T1.417-2003 for Spectrum Management Class 3 (SMC 3); - 5.3.4.1 and 6.2.4 of T1.417-2003 for Spectrum Management Cla
42、ss 4 (SMC 4, e.g. HDSL2); - 5.3.5.1 and 6.2.5 of T1.417-2003 for Spectrum Management Class 5 (SMC 5, e.g. ADSL); - 5.3.6.1 and 6.2.6 of T1.417-2003 for Spectrum Management Class 6 (SMC 6, e.g. VDSL); - 5.3.7.1 and 6.1 of T1.417-2003 for Spectrum Management Class 7 (SMC 7); - 5.3.8.1 and 6.1 of T1.41
43、7-2003 for Spectrum Management Class 8 (SMC 8); - 5.3.9.1 and 6.2.9 of T1.417-2003 for Spectrum Management Class 9 (SMC 9, e.g. ADSL); - 4.5.9.1.3 of this document for Extended Upstream ADSL NEW CLAUSE 4.5.9.2.2 4.5.9.2.2 Total Average Power and PSD for Generic Short-term Stationary Modems Approved
44、DSL terminal equipment not meeting the requirements of 6.4.3 of T1.417-2003 shall meet the requirements of 6.5 of T1.417-2003 and operate within the TU-R Power Spectral Density (PSD) requirements and total average power limits for each of the supported PSD masks listed in 4.5.9.2.1. NEW CLAUSE 4.5.9
45、.2.3 4.5.9.2.3 Longitudinal Output Voltage Limitations For each of the supported PSD masks defined in 4.5.9.2.1 above, approved DSL terminal equipment shall meet the corresponding TU-R longitudinal output voltage limits in: - 5.4.1.3 of T1.417-2003 for 2B1Q SDSL; - 5.4.2.3 of T1.417-2003 for G.SHDSL
46、; - 5.4.3.3 of T1.417-2003 for HDSL4; - 5.3.1.3 of T1.417-2003 for SMC 1, e.g. IDSL; - 5.3.2.3 of T1.417-2003 for SMC 2; - 5.3.3.3 of T1.417-2003 for SMC 3; - 5.3.4.3 of T1.417-2003 for SMC 4, e.g. HDSL2; - 5.3.5.3 of T1.417-2003 for SMC 5, e.g. ADSL; - 5.3.6.3 of T1.417-2003 for SMC 6, e.g. VDSL; -
47、 5.3.7.3 of T1.417-2003 for SMC 7; - 5.3.8.3 of T1.417-2003 for SMC 8; - 5.3.9.3 of T1.417-2003 for SMC 9, e.g. ADSL. - 4.5.9.1.4 of this document for Extended Upstream ADSL Copyright Telecommunications Industry Association Provided by IHS under license with EIANot for ResaleNo reproduction or netwo
48、rking permitted without license from IHS-,-,-TIA-968-A-3 11CLAUSE 4.6.4 4.6.4 ADSL equipment In addition to meeting the transverse balance limitations for analog voiceband equipment in Section 4.6.2, ADSL terminal equipments transverse balance shall equal or exceed the values in Figure 4.11(a) over
49、the entire range of frequencies between 13.6 kHz to 1625 kHz (see Table 4.12) as defined in Table 4.12 for ADSL or ADSL2+ equipment as applicable. Alternatively, a narrower frequency range may be used that is defined by the points at which the measured power spectral density is 20 dB down from the maximum level associated with both the maximum rate upstream and downstream signals as follows. The lower frequency shall b
