| Testing |
|
|
TESTING WITH H4TU-R BERT GENERATOR
The
1Press R to logon remotely, then press C to select the Config menu (Figure 31).
2Use the ↑ and ↓ arrow keys to select BERT Generator, then press ENTER .
3Use the arrow keys to select an option, then press the SPACEBAR to cycle through the settings. Refer to Table 19 on page 56 for a list of BERT Generator option settings.
4Press ENTER to activate your choice.
5To view BERT status, press ESC twice, then, using the ← arrow key to select the Monitor menu, press
ENTER .
6Press R to return to the
Monitor | Performance Event Log | Config | Inventory | Report Rlogon | Help | |||
|
|
| + |
| ||||
|
| Standard Options |
|
| ||||
|
| ADC Options |
|
| ||||
|
| BERT Generator |
|
|
|
| + | ||
BERT Signal Generator | : | ENA |
| |
BERT Signal Pattern | : | 1 in 8 | ||
BERT Signal Linecode | : AMI | |||
BERT Signal Direction | : NET only | |||
BERT Interval | : Continuous | |||
|
| + |
Use <Spacebar> to cycle through option settings and | <Enter> to activate |
| ||
ID: | 02/01/2002 12:30:01 | System: | OK___ |
Figure 31. H4TU-R BERT Generator Screen
The test pattern is sent out either from the line unit towards the network (toward NET) or from the remote unit towards the customer (toward CPE). Both test payloads must be looped back so they can be returned to the unit for BER detection. BER detection is performed in the line unit for both switch settings.
Tests done towards the NET must be looped at some point external to the higher circuit. Tests done towards the CPE can either be looped back at some external point beyond the remote unit, or they can be looped back internally by a higher loopback, such as NREM. The test payload, for the CPE direction, also passes back and forth over the HDSL4 link to the
September 12, 2003 | 57 |