sales@foscoconnect.com
(510) 319-9878
Silicon Valley, CA, USA
Product Overview
The CTC Union FRM220-E1-T1R-LC02B is a Bi-Directional fiber media converter (Type B) designed for G.703 T1 or E1 transmission over a single strand of multi-mode fiber. Utilizing WDM technology with a Tx:1550nm and Rx:1310nm wavelength, it transports T1/E1 signals up to 2 km (1.4 miles) over 50/125µm or 62.5/125µm fiber. It features an RJ-48c connector for connecting to 100 Ohm T1 or 120 Ohm E1 twisted pair wiring (DIP switch selectable) and a single LC 155M optical port.
This unit operates as a standalone device with an included AC power adapter and supports local DIP switch configuration. Advanced Web and SNMP management capabilities, as well as local console management, are supported when the card is installed into an FRM220 series chassis equipped with an FRM220-NMC management card. Note: As a Type B WDM converter, this unit must be paired with a complementary Type A converter (Tx:1310nm / Rx:1550nm) to establish a link.
Technical Specifications
| Standards Compliance | T1: ITU-T G.703, G.704, G.706, G.732, G.823, AT&T TR-62411, ANSI T1.403 |
|---|---|
| Copper Interfaces | RJ48c 100 Ohms balanced T1 or RJ48c 120 Ohms balanced E1 (DIP selectable) |
| Optical Interface | Single LC connector (155M fiber port) |
| Fiber Type | Single strand multi-mode (50/125µm or 62.5/125µm) |
| Wavelength | Tx: 1550nm / Rx: 1310nm (B type Bi-directional) |
| Operating Distance | Up to 2 km (1.4 miles) |
| Power Budget | Min. Output: -18 dBm | Sensitivity: -30 dBm | Budget: 12 dB |
| Management | DIP switch (Standalone); Web-managed, SNMP (via chassis NMC) |
| Front Indicators (LEDs) | Power, Fiber Link, E1/T1 SIG, Test mode |
| Power Supply | External 90-260V AC switching adapter (12VDC@1A), NEMA1-15 US plug |
| Power Consumption | < 5W |
| Operating Environment | 0°C to 60°C (Operating); 0°C to 70°C (Storage); 10% to 90% non-condensing humidity |
| Dimensions (W x D x H) | 88 mm x 155 mm x 23 mm |
| Weight | 210 g (without AC adapter) |
| MTBF | 65,000 hours |
| Compliance | CE, FCC Class A, LVD, RoHS |
Frequently Asked Questions
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Can this T1/E1 media converter be managed via SNMP?
Yes, it can be managed via SNMP and web interfaces if installed in an FRM220 series chassis equipped with an FRM220-NMC management card. For standalone operation, it relies on hardware DIP switch configuration. -
What type of converter do I need to pair with the FRM220-E1-T1R-LC02B?
Because this is a Type B Bi-Directional converter transmitting at 1550nm and receiving at 1310nm, it must be paired with a matching Type A converter (Tx:1310nm / Rx:1550nm) at the opposite end of the fiber link. -
Is the AC power supply included?
Yes, the standalone version includes an external 90-260V AC switching power adapter (12VDC@1A).

