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4-24 Configuring the Modem
Configuring
the Modem
Figure 4-2 shows a configuration using an external A/B switch. Network
configuration (SDC Option Set 2) and operation is the same as with an internal
switch.
Figure 4-2. Single Channel Point-to-Point Digital Link Restoral (A/B Switch)—Option Set 2
DSU/CSU
56/64 kbps
PSTN
Router Router
To 33.6 kbps
NMS
Network Management Channel
A/B
A/B
To 56 kbps
DSU/CSU
326X
FAS T
SDC
326X
FA S T
SDC