Chapter 22 Diagnostic
Table 93 Maintenance > Diagnostic > DSL Line (continued)
LABEL | DESCRIPTION |
DSL Line | Click this to view statistics about the DSL connections. |
Status | 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 |
| |
| 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 |
| 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 |
| 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 to reinitialize the ADSL line. The large text box above then |
Line | 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 | Click this to display information and statistics about your ZyXEL Device’s |
Logs | ATM statistics, DSL connection statistics, DHCP settings, firmware |
| version, WAN and gateway IP address, VPI/VCI and LAN IP address. |
|
|
230 |
| |
| ||
|
|
|