ONE100 Chapter 4
Installation Guide Interface Description
54
4.8 FXO Analog Interface Specifications
• There is an earth stud on the back panel of the ONE100. Always connect this to the main protective
earth.
• When an existing FXO port is used to connect to the PSTN phone service, emergency numbers must
be configured in the voice routing table (refer to User Guides).
• Connection to an analog telephone line in the network
• Cable to be used: unshielded cable with one twisted pair
• Connector: RJ45, 1 connector per FXO interface
The following table shows the connector layout of the RJ45 FXO connector:
Pin Signal Figure
1 not connected
2 not connected
3 not connected
4ring
5tip
6 not connected
7 not connected
8 not connected
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