ONE100 - Installation Manual
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4.7 FXS Analog Interface
The FXS interface enables the connection of up to 4 or up to 8 analog telephone
lines thus providing up to 8 analog voice interfaces.
The connection of the FXS interfaces is done via RJ45 connectors (1 connector per
FXS).
4.7.1 Characteristics
• Line impedance: 600 Ω or complex,
• Frequency range of the ringing signal: 16Hz to 70 Hz,
• Voltage of the ringing signal: > 37,4VRMS for a load of 1 REN (6,93K + 8µF
@ 20Hz) in the frequency range,
• Line current: 27 mA max. for a line resistance <1000 Ω,
• Polarity inversion of the TIP and RING pins,
• Line current <2mA in the power-down mode,
• Q.23 dialing.
• Ringer Equivalency Number (REN): 1
4.7.2 Connector Pinout
The connection to the analog voice interface is made on the rear panel via an RJ45
connector. The connector pinout is as follows:
Pin Signal Pin Signal
1 NC 5 TIP
2 NC 6 NC
3 NC 7 NC
4 RING 8 NC
4.7.3 Cables
The cable used for a connection toward a analog phone is an unshielded cable
including 1 twisted pair.
The ONE100 with FXS interfaces has got a screw marked located on the
rear panel. This must be permanently connected to the main protective
earth.
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