Four POTS RJ11 FXS telephone lines over fiber multiplexer, SFP slot
FRM220-FXS-4 is a 4 channel POTS (Plain Old Telephone System) over fiber converter/extender. The four POTS interface uses a standard RJ-11C modular connector for each copper pair line.
A pair of FRM220-FXS-4 and FRM220-FXO-4 is required to implement an end-to-end system. FXO mode connects to a telephone line (PSTN) or PBX station line and has the ability to detect ringing voltages and to act as a telephone. FXS mode is the reciprocal unit and has the ability to act as PSTN and connects to a telephone device.
The small multiplexer offers great flexibility on the fiber port by adopting the widely used industry-standard SFP Fast Ethernet 155M rated transceiver on both the FRM220-FXO-4 and FRM220-FXS-4 models.
When the FRM220-FXS-4 card is placed in the FRM220 chassis 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 a DIP switch.
Additional information on FRM220-FXS-4:
Technical specifications
| POTS Line: | FXS (Impedance:600ohms, REN:0.4) |
| Interfaces: | RJ11 port 600Ohms and SFP slot fiber port |
| Operating wavelength: | depending on the SFP transceiver used |
| Operating distance: | Up to 120Km on 9/125um single-mode (SM) fiber or 2Km on 50/125um or 62.5/25um multi-mode (MM) fiber |
| Optical connector: | SFP slot (empty), accepting 155Mbps (FE) SFP transceivers |
| Front LEDs: | Power, Fiber Link, System, Test mode, CH1~CH4 |
| Power: | External 90-260V AC switching adapter 12VDC@1A with NEMA1-15(2 blades only), US type main plug |
| Temperature: | 0~50°C (Operating); 0~70°C (Storage) |
| Humidity: | 20~80% non condensing (Operating); 0~90% (Storage) |
| Consumption: | less than 5W |
| Dimensions(WxDxH): | 88mm x 155mm x 23mm |
| Weight: | 330g (without AC adapter) |
| Compliance: | CE, FCC Class A |
| MTBF: | 65,000 hours |
Note: The FRM220-FXO-4 and FRM220-FXS-4 multiplexers REQUIRE SFP transceivers for the optical port. You can check a selection of SFP transceivers on our site or contact our sales department by e-mail.