User manual

CRA-210 User Manual Guide
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4.2.4.2.2. Connecting to VoIP to PSTN Services
Connecting VoIP-To-PSTN calling function is referred to as a PSTN gateway.
VoIP callers can be authenticated by one of the method called Secret PIN to
connect to PSTN Gateway which is shown in the below figure.
Secret PIN Caller is prompted to enter a PIN right after the call is answered.
How VoIP-To-PSTN Calls Work
The ATA device takes the FXO port off hook by dialing Line number (which is
registered in the SIP Config -> Line) only if the given PIN matches one of PIN
values listed in the VoIP Config -> Bridge Settings -> IP to PSTN -> Secret PIN.
If the given PIN does not match with PIN values, the ATA device re-
plays the IVR to the caller up to two times to prompt for a correct PIN number, and
then it will disconnects the call. If the given PIN matches one of PIN values, then
ATA device plays dial tone of the FXO port and is ready to accept digits to make
outgoing call to the PSTN user.
4.2.4.2.3. Receive a PSTN call from the Phone Port (FXS) directly
This feature is enabled by default. If any PSTN call comes; which is connected to
Line port (FXO), this ATA will allow to ring both Extension i.e. Phone1 &
Phone2 (FXS). And it can be answered by either Phone1 or Phone2.