The
main network of tax system can
be reduced to tree classes, province,
city and county/tax station. It
only needs to add corresponding
IP voice equipments at some nodes
to build intra IP Phone network.
Utilized existed BPX, using Aliwei
IPPBX or analog gateways, connect
FXO ports of Aliwei gateways or
FXO modules of Aliwei IPPBX to
traditional PBX. Connect all phone
sets with FXS ports of IPPBX.
Use the relay lines connected
with analog gateway as number
select successively, to make dialing
easy. Set MCU to support telephone
conference.
To where no PBX, connect FXO port
of Aliwei IAD with PSTN. To county
tax office or tax stations, set
Aliwei 4-32 ports gateway.
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