The 4RU Fiber Optic Link 4-wire E&M system provides simultaneous transmission of 4-wire data and single or bidirectional E&M over two optical fibers, providing point-to-point isolation of Telco or 4-wire PABX trunk lines using E&M leads.
The 4-wire data supports full duplex constant transmission up to 9600 bps in voice frequency range (300Hz-3.4KHz). The E&M card interfaces with an E&M input and provides a contact closure on the far end. The cards have convenient E&M input and output status LED indicators.
E&M cards may also be ordered with SM11 for dry contact closure input.
This system is environmentally hardened and is designed to fit into any of our 4RU card shelves and housings and is covered by our exclusive unconditional lifetime warranty.