Synway Information Engineering Co., Ltd
SMG Series Analog Gateway User Manual (Version 1.5.3)
Page 95
technicians for help?
a) During runtime, the run indicator does not flash or the alarm indicator lights up or flashes,
and such error still exists even after you restart the device or restore it to factory settings.
b) Voice problems occur during call conversation, such as that one party or both parties
cannot hear the voice or the voice quality is unacceptable.
c) The port of the gateway is well connected, but the channel indicator never lights up after
the gateway startup or the color it lights up does not comply with the actual state or port
type.
Other problems such as inaccessible calls, failed registrations, incorrect numbers and
abnormal dialing operations on the FXS port are probably caused by configuration errors. We
suggest you refer to
for further examination. If you still cannot
figure out or solve your problems, please feel free to contact our technicians.
Q5. What to do if I cannot enter the WEB interface of the SMG gateway after login?
This problem may happen on some browsers. To settle it, follow the instructions here to
configure your browser. Enter ‘Tools > Internet Options >Security Tab’, and add the current IP
address of the gateway into ‘Trusted Sites’. If you changes the IP address of the gateway,
add your new IP address into the above settings too.
Q6. How to configure the features Communication without Power and Communication
without Network for the SMG analog gateway?
The feature
Communication without Power
is implemented with the help of composite
modules equipped in the gateway. Once the power to the device is cut off, the station which
is linked with the FXS port on the composite module and the trunk which is linked with the
FXO port on the same module will connect to each other directly and keep the good
communications between phones and networks. What you need to do is just to configure the
composite module properly at your purchase of our gateway.
The feature
Communication without Network
is implemented via the WEB management
over the analog gateway. It will automatically route a call to the FXO port in case of network
failure or call timeout.
Refer to
in this chapter for detailed information.
Q7. How many ports can be rung by turns according to the Ringing by Turns rule?
According to the 180s ringing timeout limit in RFC3261 protocol, the time used for ringing all
ports by turns cannot exceed 180s. Therefore, based on the minimum timeout 15s for each
port in the ringing queue, the maximum number of ports for ringing by turns is 12.
For example, if you set
Timeout for Ringing by Turns
to 20s, the maximum number of ports
for ringing by turns should be 180s/20s=9; if you set
Timeout for Ringing by Turns
to 30s,
the maximum number of ports for ringing by turns should be 180s/30s=6.
Q8. Is there any cell-phone APP can make calls to the SMG gateway?
Yes. Linphone is a soft SIP phone that is supported by multiple platforms, such as Linux,
Windows, iOS, Android, etc. It must be registered to the SIP registrar server before dialing to
other SIP devices or PSTN telephones,
Q9. Does the SMG gateway support fax?
Yes. Currently the SMG gateway supports two fax modes: T.38 and Pass-Through.
