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Q. Why I could not modify the outbound dialing rule on OM?
A
. The configured prefix is in conflict with the extension number, hunting group number, number to reach the
operator, feature access code and other call prefixes.
Q. Why the line status on the web GUI shows disconnected while the FXO port is connected to the
PSTN line and when made an incoming call to the line, the caller will hear a ring back tone but
extension will not ring and also cannot make an outgoing call?
A
. You need to check and configure the following:
Disconnect the PSTN subscriber line from the FXO port of MX or OM device and connect this line
directly to an analog phone. Verify if the line is normal and can make incoming and outgoing call.
If the PSTN line is normal, then the reason could be that the PSTN line voltage is too low, thus we need
adjust the parameter FXO_DISC_VOLT (ID211) and set it to 20/10, default is 28. That parameter is
FXO port ring detect threshold.
Procedure in setting FXO_DISC_VOLT parameter:
Log in to GW with admin account
Set the value to 20 for disabling SIP_FG_REQ_USING_TO parameter. Input the xml command
on the URL:
https://x.x.x.x/xml?method=gw.config.set&id211=20
Note: x.x.x.x refers to the IP address of your GW
Q. How to configure the device in order to have a successful POS call?
A
. In order to have a successful POS call, you need to check and configure the following:
Make sure that your POS machine is connected to the FXS port of the device.
Make sure you have the best network quality to avoid packet loss.
It is recommended to use T.30 mode and PCMU/20 or PCMA/20 codecs.
Go to
Routing > Routing table
, then add a route “
FXS 143 CODEC PCMU/20/0
” (note:143 is the
Bank’s access account number and you are using PCMU codec with 20ms of package size with
disabled echo cancellation)
Q. Why I don’t hear my phone is ringing every time I received an incoming call? Other side can
heard a ring back tone and when I answered the phone call is established.
A.
The default Voltage and frequency is too low, thus it could not provide enough power to the analog phone
to
