XDSL Testing and Loop Qualification
DSL Auto-Test
5
5-5
Table 5-1. Service Types for Qualification (continued)
Service Type Qualification Criteria
ADSL, ADSL2 • Param. results vs. ADSL/2 Pass Thresholds
• WB Up. & Downstream Est. Data Rates
• 138 kHz WB Long. Balance
ADSL2+ • Param. results vs. ADSL2+ Pass Thresh.
• 2.2 MHz WB Long. Balance
VDSL1, “1.5”, 2 • Param. results vs. VDSL Pass Thresholds
• 0.25 MHz to 17.7 MHz WB Long. Balance
HDSL • Param. results vs. HDSL Pass Thresholds
• 196 kHz (Nyquist) Loss & WB Long. Bal.
HDSL2 • Param. results vs. HDSL2 Pass Thresholds
• WB Up. & Downstream Loop Attenuation
• 196 kHz WB Long. Balance
HDSL4 • Param. results vs. HDSL4 Pass Thresholds
• WB Up. & Downstream Loop Attenuation
• 196 kHz WB Long. Balance
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