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The FRM220-FXO/FXS is a POTS (Plain Old Telephone System) over fiber converter/extender. The POTS connection uses a standard RJ-11C modular connector for one copper pair connection. A pair of FRM220-FXO/FXS is required to implement an end to end system. FXO mode connects to a telephone line (PSTN) or PBX station line and has ability to detect ringing voltages and to act as a telephone. FXS mode is the reciprocal unit and has ability to act as PSTN and connects to a telephone device. When the FRM220-FXO/FXS card is placed in the FRM220 rack with NMC management, in-band management allows configuring and viewing the card and remote converter's status, type, version, fiber link status, on hook status and alarms. Both card and remote can be configured to enable or disable the port, reset the port and set the FXO or FXS mode. When configured in an FXS to FXS fashion, a private "hot line" or direct line is created. When placed in a single slot chassis and used standalone without management, the card may be configured by DIP switch.
Features
Extend telephone voice transmission up to 120km over fiber
Network management via terminal, web or SNMP in FRM220 (NMC)
Supports caller ID Pass-Through
Selectable FXO or FXS mode
Supports FXS to FXS hot line
Supports D/D function for SFP fiber transceiver
Will not support FAX or Modems
Application
Figure 1 : Automatic Ring down hotline
Figure 2 : Voice Transmission from 2km to 120km over fiber
Figure 3 : Selectable FXO or FXS mode
