Wireless IAD User Manual
PSTN Control
PSTN means Public Switched Telephone Network. It is one kind of telephone system which uses the copper cable to transmit analog sound. PSTN is also known as POTS (Plain Old Telephone System).
This page allows you to change the prefix digits to dial one PSTN phone call. If your device is on the PSTN mode, it is not necessary for you to set the prefix digits for the PSTN phone calls.
Conditions for the PSTN
The following conditions indicate that the VoIP phone has been changed to PSTN mode:
zwhile the IAD is powered off
zwhile the IAD cannot register with or reach the SIP Server
zwhile user dials prefix digits
zwhile user dials PSTN phone numbers including emergency call (FXO function, refer to the section of “Definition of FXS and FXO”)
zwhile PSTN call incoming
Conditions for the VoIP
The following conditions indicate that the VoIP phone has been changed to VoIP mode:
zwhile PSTN call terminated
zwhile SIP sever is reachable and is registered successfully
Note: Only Phone 1 port can act as a PSTN relay. So if the wireless IAD loses power only Phone1 can make calls using your landline telephone company
The page on the right side is the web page for PSTN control settings.
