FRM220-FXO-4/FXS-4 are 4 channel POTS (Plain Old Telephone System) over fiber converter/extender. The four POTS connection uses standard RJ-11C modular connectors for each copper pair connection. A pair of FRM220-FXO-4/FXS-4 is required to implement an end to end
When the FRM220-FXO-4/FXS-4 cards are placed in the FRM220 rack with SNMP 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. 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 telephone voice transmission
Supports FXS to FXS hot line
Supports caller ID Pass-Through
Supports FAX and Modem transmissions
Application
Figure 1 : Automatic Ring down hotline
Figure 2 : Voice transmission from 2km to 120km over fiber