The three pages listed below will give you most if not all the info you need.

If you don't have the modem doing the PPPoE session a direct connection to the modem is needed to view the DSL info.

The first page 192.168.0.1 titled "Connection Information"
DSL UP means you have sync DOWN means no sync
Connected at shows the down/up sync rates
Software Version shows the version of the modem's software

192.168.0.1/statistics.htm titled "Statistics"
Line State UP means you have sync DOWN means no sync
Modulation G.dmt or ANSI
Max Allowed Speed (kbps) shows the sync rates
Signal to Noise margin
Line Attenuation
CRC Errors

192.168.0.1/log.htm titled "Log"
The modem's log will keep track of when sync is achieved and when a loss of sync has occurred along with PPPoE sessions, DHCP activity and ethernet status.
When the modem is in PPP is on the computer or Bridged mode (PPPoE is not used) time stamps are elapsed time

The default setting for the 4100 modem log is to erase the log entries at every restart.
For the 5100b software version 1.0.0.39 and above the default is the same as the 4100 modem.
With the log being cleared at every restart it may be too short to get any useful info from the log entries.
For troubleshooting a problem you can change a setting on the log page so that the modem only clears the log on factory resets or clearing the log manually.
While using the "Keep Log on Restart" the modem will display a warning that keeping the log on restart is not recommended this warning can be ignored while troubleshooting a problem.The "Clear Log on Restart" button will get rid of the warning.


If you are asked for a copy of the modem log save it as a text file and post the saved text file.


There are some useful bits of info on this page:
192.168.0.1/techreadout.htm titled "Technician Readout"

14 Time Since Last Boot**
15 Current Time***
32 Time Since Last Sync**
40 PPP Uptime**
292 PPP Access Concentrator
320 LAN Device Table
** time stamps are elapsed time
***current gmt time

GMT time stamps are shown only when the modem's mode is PPPoE is on the modem with a valid username and password entered and saved, also when in this mode the log will track the PPPoE / PPP session. The log also tracks the activity of the modem's DHCP server. More info on the modem's PPPoE / PPP log entries can be found Here.

This is a log entry for sync down / up:
2005/05/29 16:05:33 GMT E |DSL |Link Down
2005/05/29 16:05:48 GMT E |DSL |Link up 2 US 608 DS 2720 (FAST:ANSI)

This is a short log entry for the PPPoE / PPP session
Only shows if PPP is on the modem mode is being used:
2005/05/29 18:13:36 GMT E |PPPoE |rx PADS id: D3A6
2005/05/29 18:13:37 GMT E |PPP |IPCP up ip: 68.248.128.108

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by wayjac
last modified: 2006-09-12 17:22:01