Chapter 4: Web Configuration
Do NOT send My Phone Number: This item allows that the caller’s ID or name not to be sent to the receiver. Please check this item to enable this function.
Send telephone events via:
There are three ways for you to send the telephone events. Choose one (Voice Codec (Inbound), RFC2833, INFO Method) according to the information provided by your ISP for sending the events.
Audio Codec
It is a computer program that compresses/decompresses digital audio data according to a given audio file format or streaming audio format.
Preferred Audio Codec: There are six options for you to choose. Each one represents different compression function for the audio data. Select one to match your requirement according to the information provided by your ISP. If you choose Auto, the system will choose a proper one for you. It is recommended to choose Auto if you don’t know how to select.
After finished settings, click Apply for activation.
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 emergence call (FXO function, refer to the section of “Definition of FXS and FXO”)
zwhile PSTN call incoming
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