Adtran 1204002L2 User Manual
Chapter 4. Applications
4-14
TSU IQ+ User Manual
61200275L1-1
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.
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.
Figure 4-7. PRI DBU Card at Host Site
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.
setups for PRI DBU options at the Host Site. These tables are based
on the example application shown in Figure 4-7.
Router
DTE
NET
DBU
TSU IQ+
SITE A
SITE B
SITE C
ISDN or
POTS Network
Frame Relay
Router
LAN
LAN
Router
LAN
DTE
NET
DBU
TSU IQ+
DTE
NET
DBU
TSU IQ+
16
17
17
100
101
101
20
201
BRI
BRI
PRI