Chapter 5: Monitoring Circuit Status and Displaying System Information
The following table describes the data displayed on the ADSL Performance Status screen.
Field | Meaning |
|
|
Down Alarms | Identifies the current downstream alarms (toward the Megabit |
| Modem 320F). Options: |
| • LOF - Loss of Frame |
| • LOS - Loss of Signal |
| • MAR - Margin |
| • ES - Errored Seconds |
| • SES - Severely Errored Seconds |
| • SELF - Self Test Failed |
| • NONE - No current alarms |
|
|
Up Alarms | Identifies the current upstream alarms (transmission toward the |
| Megabit Modem 310F). |
|
|
System State | Identifies the state of the ADSL system: |
| • ACK - Acknowledge during handshake. |
| • TRAINING - Modem is currently training. |
| • CHANA - Channel analysis is in process. |
| • EXCH - Exchange final handshaking messages. |
| • DATA - Link is up and data can be transferred. |
|
|
SNR Margin (dB) | Identifies the current (cur) and minimum (min) margin values for |
| the ADSL loop for the current |
| |
| information on SNR margin and BER. |
|
|
Line Attn (dB) | Indicates the line attenuation for the upstream and downstream |
| ADSL channels. Line attenuation is the decrease in amplitude of the |
| signal between transmission and receipt. |
|
|
24 Hour ES | Indicates the total number of errored seconds that were detected on |
| the ADSL link during the current |
|
|
24 Hour UAS | Indicates the total number of unavailable seconds (UAS) that were |
| detected on the ADSL link during the current |
| indicate the amount of time that the lines were unavailable for |
| transmission since the modem was powered up or cleared. |
|
|
Data Rate (kbps) | Identifies the current rates at which data is being transmitted. |
|
|
Megabit Modem 310F and 320F User Manual | 33 |