Specifications

Chapter 7 Battery Reversal FXS/DPO
7-5
Figure 8-4. Accessing the BRFXS/DPO Card(s)
BRFXS/DPO CONFIGURATION SETTINGS
The configuration of the Battery Reversal FXS/DPO card is set by a 4-position DIP switch and 12
individual channel test switches accessed through the ABI back plate (Figure 8-5). The settings for these
switches are described below in Table 8-2.
Table 8-2. Switch Settings for Battery Reversal FXS/DPO Card Functions
Switch Function OFF ON
A Ringing Voltage DPO operation:
Ringing voltage never
applied to CPE loop.
2-wire FXS loop-start
operation: Cadenced (2-
second/ 4-second) ringing
voltage applied to CPE loop
during incoming call.
B Ringback Tone Ringback tone never
applied to network.
Cadenced (2-second/ 4-
second) ringback tone applied
to network during incoming
call.
C <Reserved> Normal <Reserved>