Installation guide

AP-IP200 IP Phone Installation Guide (Release 1.00E) Aug. 2005
AddPac Technology Proprietary & Documentation 93 - 26
Connecting PSTN (FXO) interface
The FXO PSTN interface port is available when PSTN access-line is used or
impossible to make a VoIP call due to network problem. PSTN backup is implemented
by connecting PSTN access-line to PSTN port, illustrated as following figure.
Figure 3-3 PSTN FXO Interface Diagram of AP-IP200 IP Phone