
Chapter 30 Diagnostic
P-2602HWLNI User’s Guide
421
DSL Line Status Click this button to view statistics about the DSL connections.
noise margin downstream
is the signal to noise ratio for the downstream part of
the connection (coming into the ZyXEL Device from the ISP). It is measured in
decibels. The higher the number the more signal and less noise there is.
output power upstream
is the amount of power (in decibels) that the ZyXEL
Device is using to transmit to the ISP.
attenuation downstream
is the reduction in amplitude (in decibels) of the DSL
signal coming into the ZyXEL Device from the ISP.
Discrete Multi-Tone (DMT) modulation divides up a line’s bandwidth into sub-
carriers (sub-channels) of 4.3125 KHz each called tones. The rest of the display is
the line’s bit allocation. This is displayed as the number (in hexadecimal format) of
bits transmitted for each tone. This can be used to determine the quality of the
connection, whether a given sub-carrier loop has sufficient margins to support
certain ADSL transmission rates, and possibly to determine whether particular
specific types of interference or line attenuation exist. Refer to the ITU-T G.992.1
recommendation for more information on DMT.
The better (or shorter) the line, the higher the number of bits transmitted for a DMT
tone. The maximum number of bits that can be transmitted per DMT tone is 15.
There will be some tones without any bits as there has to be space between the
upstream and downstream channels.
Reset ADSL
Line
Click this button to reinitialize the ADSL line. The large text box above then displays
the progress and results of this operation, for example:
"Start to reset ADSL
Loading ADSL modem F/W...
Reset ADSL Line Successfully!"
Capture All Logs Click this button to display information and statistics about your ZyXEL Device’s
ATM statistics, DSL connection statistics, DHCP settings, firmware version, WAN
and gateway IP address, VPI/VCI and LAN IP address.
Table 182
Diagnostic: DSL Line (continued)
LABEL
DESCRIPTION
Содержание P-2602HWLNI
Страница 2: ......
Страница 7: ...Safety Warnings P 2602HWLNI User s Guide 7...
Страница 8: ...Safety Warnings P 2602HWLNI User s Guide 8...
Страница 24: ...Table of Contents P 2602HWLNI User s Guide 24...
Страница 32: ...List of Figures P 2602HWLNI User s Guide 32...
Страница 38: ...List of Tables P 2602HWLNI User s Guide 38...
Страница 39: ...39 PART I Introduction Introducing the ZyXEL Device 41 Introducing the Web Configurator 49...
Страница 40: ...40...
Страница 60: ...Chapter 2 Introducing the Web Configurator P 2602HWLNI User s Guide 60...
Страница 62: ...62...
Страница 86: ...Chapter 5 Bandwidth Management Wizard P 2602HWLNI User s Guide 86...
Страница 98: ...Chapter 6 Status Screens P 2602HWLNI User s Guide 98...
Страница 99: ...99 PART III Network WAN Setup 101 LAN Setup 117 Wireless LAN 129 Network Address Translation NAT Screens 155...
Страница 100: ...100...
Страница 154: ...Chapter 9 Wireless LAN P 2602HWLNI User s Guide 154...
Страница 166: ...Chapter 10 Network Address Translation NAT Screens P 2602HWLNI User s Guide 166...
Страница 167: ...167 PART IV VoIP Voice 169 VoIP Trunking 211 Phone Usage 227...
Страница 168: ...168...
Страница 226: ...Chapter 12 VoIP Trunking P 2602HWLNI User s Guide 226...
Страница 230: ...Chapter 13 Phone Usage P 2602HWLNI User s Guide 230...
Страница 232: ...232...
Страница 264: ...Chapter 15 Firewall Configuration P 2602HWLNI User s Guide 264...
Страница 268: ...Chapter 16 Content Filtering P 2602HWLNI User s Guide 268...
Страница 274: ...Chapter 17 Introduction to IPSec P 2602HWLNI User s Guide 274...
Страница 309: ...Chapter 19 Certificates P 2602HWLNI User s Guide 309 Figure 173 My Certificate Details...
Страница 320: ...Chapter 19 Certificates P 2602HWLNI User s Guide 320 Figure 181 Trusted Remote Host Details...
Страница 326: ...326...
Страница 330: ...Chapter 20 Static Route P 2602HWLNI User s Guide 330...
Страница 338: ...Chapter 21 Bandwidth Management P 2602HWLNI User s Guide 338...
Страница 342: ...Chapter 22 Dynamic DNS Setup P 2602HWLNI User s Guide 342...
Страница 360: ...Chapter 23 Remote Management Configuration P 2602HWLNI User s Guide 360...
Страница 372: ...Chapter 24 Universal Plug and Play UPnP P 2602HWLNI User s Guide 372...
Страница 374: ...374...
Страница 380: ...Chapter 25 System P 2602HWLNI User s Guide 380...
Страница 406: ...Chapter 28 Troubleshooting P 2602HWLNI User s Guide 406...
Страница 422: ...Chapter 30 Diagnostic P 2602HWLNI User s Guide 422...
Страница 432: ...Chapter 31 Product Specifications P 2602HWLNI User s Guide 432...
Страница 434: ...434...
Страница 446: ...Appendix A Setting up Your Computer s IP Address P 2602HWLNI User s Guide 446...
Страница 482: ...Appendix F Legal Information P 2602HWLNI User s Guide 482...
Страница 488: ...Appendix G Customer Support P 2602HWLNI User s Guide 488...