NetComm 4-port and 8-port Gateways Gateway Series Reference Manual page 18

Example of SmartVoice Gateway using a combination of FXS and FXO ports
Phone1-Phone are FXS interfaces and can be directly connected to telephone sets for direct calls.
Line1-Line are FXO interfaces and can be connected to PSTN lines to serve as a bridge between the
PSTN and other VoIP telephones. The system also allows a call to be made from a traditional telephone
line to connect with a user behind the SmartVoice Gateway.
Integrating the SmartVoice Gateway with PBX
Phone1-Phone are FXS interfaces and can be connected to PBX CO lines; Line1-Line are FXO
interfaces and can be connected to a PSTN to act as a bridge between the PSTN and other VoIP
telephones. The system also allows a call to be made from a traditional telephone line to connect with a
user behind the SmartVoice Gateway.
Note: The above diagrams show a 4-port SmartVoice gateway for illustration purposes.
An 8 port SmartVoice gateway could also be used depending upon your network
requirements.
18 SmartVoice Gateway(s) User Guide
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