Dbu Application 2 (Pri); Figure 4-7. Pri Dbu Card At Host Site - ADTRAN TSU IQ+ User Manual

Chapter 4. Applications

DBU Application 2 (PRI)

The following application shows the critical configuration for a
case where the Host Site of the frame relay circuit is set up to
restore service (see Figure 4-7). This setup uses a PRI ISDN module
and service so that multiple calls can be placed simultaneously. The
criteria for placing a call are based on Host Site port failure or
individual PVC failure. The individual PVC failure should account
for remote sites port outages and frame relay service troubles.
SITE A
Router
Table 4-3, Table 4-4, and Table 4-5 on page 4-15 show example
setups for PRI DBU options at the Host Site. These tables are based
on the example application shown in Figure 4-7.
4-14
16 100
17 101
TSU IQ+
NET Frame Relay
20 201
DTE
DBU
PRI
ISDN or
POTS Network

Figure 4-7. PRI DBU Card at Host Site

TSU IQ+ User Manual
SITE B
TSU IQ+
NET
Router
DTE
BRI
DBU
TSU IQ+
SITE C
NET
Router
DTE
BRI
DBU
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