User's Manual

System Configuration
100
5
DELT
Dual-ended loop testing (DELT) is an ITU-standard loop diagnostic tool that enables
the measurement of conditions at both ends of a DSL line. DELT can be used after
deployment to allow service providers to monitor stability and connection rates for
existing customer lines.
Click VDSL, DELT.
Figure 5-52 DELT Loopback Test Information
• Run DELT Test – Performs the selected DELT test.
• DELT Option – The type of signal transmitted from the specified port.
• 1 – H-log per subcarrier group
• 2 – H-lin per subcarrier group
• 3 – Quiet line noise per subcarrier group
• 4 – Signal-to-noise ratio per subcarrier group
• 5 – Signal-to-noise ratio margin per band
• 6 – Line attenuation per band
• 7 – Signal attenuation per band
• 8 – Attainable net data rate
• 9 – Actual aggregate transmit power
• 10 – H-lin scale
• 11 – Near-end parameters
• 12 – Far-end parameters
• 13 – Downstream TSSI breakpoints