ADTRAN IQ Probe 1200214L1 User Manual page 55

See Figure 4-6 for an example of a dial backup application.
Tables 4-A and 4-B provide example setups for the DBU Options
(CONFIG ->DIAL BACKUP) and the PVC Configuration Table
(CONFIG ->DCE PORT ->PVC CONFIG). The tables are based
on the example application shown in Figure 4-6. Please note that
the configuration selections given may need modification based
on your network configuration.
SITE A
Router
POTS Network
61200214L1-1
16
17
Frame Relay
IQ Probe
DSU/CSU
DSU/CSU
DCE
DTE
DBU
ISDN or
IQ Probe User Manual
Chapter 4. Applications
DSU/CSU
116
117
IQ Probe
DCE
DTE
DBU
IQ Probe
DCE
DTE
DBU
Dial Backup Application
SITE B
Router
SITE C
Router
Figure 4-6
3 5