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The PSTN two-wire POTS telephone port can be configured either as an FXO (PBX trunk) or FXS (telephone set/fax machine/dial-up modem) device just by a simple DIP switch setting. Using a pair of converters, a telephone line can be extended over a fiber optic circuit, providing full service and features like Caller ID. The converter can be used in service mode, alowing connection of 2 telephone sets in between.
FRM220-FXO-FXS-SFP - Pots (RJ11) Over Fiber Media Converter, Telephone Line Extender, SFP Slot for Flexible Fiber Choices
TC1631 - T1/E1 Fiber Optic Converter Modem - TC Communications
CXR Networks: Robotics - Automation - Industrial IT - DirectIndustry
FRM220-FXO-FXS-SC02A is a POTS telephone line extender over a single multi-mode fiber. Converter can be set as trunk or handset and works in pairs to
FRM220-FXO-FXS-SC02A POTS (RJ11) over multimode single strand fiber converter, telephone line extender, SC 2Km, A type
T1 Media Converter
CTC Union 2007 Complete Catalog
FRM220-E1-T1R-SC02A - T1 RJ45 100ohm (and E1 120ohm) to single
FRM220-E1-T1R-SC02A - T1 RJ45 100ohm (and E1 120ohm) to single
FRM220-E1-T1-SC015 - single E1 and T1 to single-mode
Relay Contact Fibre Converter
E1/T1 Over Fiber Card Network Switch & Media Converter
FRM220-FXO-FXS-SC02A - POTS (RJ11) over multi-mode single strand
E1/T1 Ethernet Multiplexor
FRM220-E1/T1 - Modem fibre optique E1/T1