Installation guide

AP-IP200 IP Phone Installation Guide (Release 1.00E) Aug. 2005
AddPac Technology Proprietary & Documentation 93 - 64
Set the DNS SRV.
When user-name is not number but
characters, this option is used to register
SIP server.
VoIP Setup
– PSTN Prefix
When user wants to access the FXO interface for PSTN backup, this prefix number is used
as PSTN access code. Additionally, AP-IP200 IP phone supports the PSTN back-up service
when VoIP service is impossible due to network failure or VoIP call service is interrupted by
exception.
Figure 4-32 PSTN Prefix Menu
PSTN prefix Description