Solwise Elite VoIP Gateway User’s Guide
27
order to reach the person inside the region that the public switch
serves.
3.3 Application C: FXS/FXO Extended Combination
Application C has four possible connections. The C-1 connection is
a normal trunk connection between the CO switch and PBX
(identical to connection B-1 in the previous application) The C-2
connection is identical to the A-1 connection mentioned in
Application A. The C-3 connection connects the PBX and gateway
through the internal analog line provided by the PBX (identical to the
B-3 connection). The C-4 connection connects the CO switch to the
gateway using the FXO module (similar to the C-3 connection).
The C-2 connection can be replaced by the C-3 connection, but it
must then use an FXO module instead of an FXS module. In this
application, the user can benefit from the VoIP application even
when not in the office. With a properly configured dial plan, the user
can make a phone call through a public switch back to the office,
and the PBX will relay the phone call to the other end which may be
located in another city, state, or even country.
