|
|
|
| Table 124 Diagnostic: DSL Line (continued) | |
|
|
|
| LABEL | DESCRIPTION |
|
|
|
| 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. |
|
| attentuation downstream is the reduction in amplitude (in decibels) of the DSL |
|
| signal coming into the ZyXEL Device from the ISP. |
|
| Discrete |
|
| |
|
| 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 |
|
| certain ADSL transmission rates, and possibly to determine whether particular |
|
| specific types of interference or line attenuation exist. Refer to the |
|
| 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 | Click this button to reinitialize the ADSL line. The large text box above then displays |
| Line | 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. |
Chapter 26 Diagnostic | 317 |