Billion BiPAC 7404V series User Manual page 57

Advanced Options
ADSL Parameters help to interpret your ADSL line statistics.
SNR Margin: It is known as Signal to Noise Ration Margin. It is the relative of DSL strength to
Noise ratio. This margin is measured in decibels (dB). Higher the dB figures better the DSL
strength and better chance to get faster speed. THE HIGHER THE BETTER
Line Attenuation: it measures the signal loss in decibel (dB) between the CO DSLAM. Lower the
attenuation dB figures better the DSL strength/speed. THE LOWER THE BETTER.
CRC Errors: It is known as Cyclic Redundancy Check Error.
transmission error.
Latency: It includes two channels, Fast and Interleaved. It displays the channel adapted by your
ISP.
Capability: There are more combinational ADSL modulation modes to be selected.
A: ADSL connection will be limited to ADSL1 only.
BIS+: ADSL connection will be limited to ADSL2+ only. (If you are ADSL1 subscriber DO
NOT select this option).
BIS+/T1413: ADSL connection will be limited to ADSL2+ and ADSL1 T1.413 only.
BIS+/BIS: ADSL connection will be limited to ADSL2+ and ADSL2 only.
BIS+/BIS/A/T1413: ADSL connection will be limited to ADSL2+, ADSL2 and ADSL1
G.DMT & G.Lite & T1.413.
DISABLE: This disable function will disconnect your ADSL synch. Select it with cautious.
S=1/2 Mode: It is ADSL1 protocols which can increase the downstream speed up to 12Mpb.
Please check further with your ISP about this option is being enabled or not.
Chapter 4:Configuration
VoIP/(802.11g) ADSL2+ (VPN) Firewall Router
Its checksum is to detect the
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