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1823 VoIP Gateway User’s Guide
1.3 Application
The following illustration shows a typical application for the 1823 VoIP Gateway.
PSTN
IP
Ethernet
VoIP
Trunking
Gateway
Proxy Server
1823
FXS
DSL/Cable
Modem
05-17659
VoIP
DSL/Cable
Modem
PO
W
ER
PH
O
N
E1
PH
O
N
E2
LA
N
1
LA
N
2
LA
N
3
W
A
N
1800 VoIP Gateway
FXS
Ethernet
1823
FXS
PO
W
ER
PH
O
N
E1
PH
O
N
E2
LA
N
1
LA
N
2
LA
N
3
W
A
N
1800 VoIP Gateway
FXS
8 May 2005 1823-A2-GB20-00