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Ring Frequency
You can configure how long the Ring Frequency do you
want to use.
FXO Battery Reverse
Enable battery reverse to detect polarity from PSTN line.
The PSTN line can send SIP case: Sending the 200 OK
connect signal to caller when detecting polarity reverse
from PSTN Line.
FXO Answer Mode
When user calls the PSTN line which was connected with
the FXO port, there are three answer mode for user to
configure.
4. Ringing Answer Mode (Default Setting): FXO answer
the call once the ring coming from PSTN line.
5. Connecting Answer Mode:
Case A: “Hot Line Number” was NOT assigned in the
FXO port. FXO answer the call once the ring comes
from PSTN line.
Case B: “Hot Line Number” was assigned and the Hot
line number belongs to remote VoIP device.
In this case, FXO port will not answer (off-hook) the
PSTN till the user picks up the call.
(Note: This case can avoid charging for the Local
PSTN call when the remoting VoIP devic still ring.)
Case C: “Hot Line Number” was setting and the Hot
line number was assigned to another FXS port in
same Gateway. FXO port will not answer (off-hook) till
the Phone (connected to the FXS port) was picked up
by user.
(Note: This case can avoid the Local PSTN charge
when the FXS port still ring.)
6. Non Answer Mode: FXO will NOT answer the call in
any time.
(Note: Some ITSP only let the FXO for termination
function, they do not user use the FXO port for
origination)
SIP Call Connecting Answer Mode
Case B: Hot Line Number” was assigned and the Hot line number belongs to SIP device.
1. When the call com from PSTN to FXO, FXO start the Hot line dialing to remote SIP
gateway
2. The phone of remote SIP gateway start ring.
3. When the phone was picked up, the remote SIP Gateway sends “SIP 200 OK” signal to
FXO port.