Detailed Product Description

FOM-4/8 fiber optic multiplexer with high-performance ASIC design, integrates 4/8 E1 channels, 2 clear asynchronous RS-232 data channels and an optional 100Mbps Ethernet traffic into one fiber optical link, for distance up to 120Km. FOM4/8 fiber optical Multiplexer can be used to extend the E1 and Ethernet transmission distance transparently without performance degradation via fiber cables, and provides a cost-effective and high-performance solution for the last mile access of PSTN network or other data service. FOM-4/8 transmits each of the tributary E1 channels independently. The E1 interface can be 75Ω unbalanced BNC or 120Ω balanced RJ-45.     

Ethernet transmission utilizes an integrated 10/100Base-T RJ-45 port. The Ethernet port can operate in half or full duplex mode, and supports auto-negotiation and transparent VLAN forwarding.
Two types of standalone and card versions are optional. The standalone compact 1U high unit is available for mounting in a 19-inch rack. And the card version can be installed in NIC-iRACK, a universal rack for SNMP management. Moreover, in-band management for the standalone unit via the card unit in NIC-iRACK is available.

                                                                 
Features
> Multiplexing 4/8*E1 (2.048Mb/s) channels and 2 clear asynchronous RS-232 data channels over one fiber link;
> Providing 1 order wire port for system maintenance;
> Providing local and remote loopback controls for each tributary E1 link;
> Standalone unit: 19 inch, 1U, small volume, small weight, convenient to transport and installation;
> Card unit plugged in NIC-iRACK, support SNMP management;
> WindowsTM based GUI SNMP NMS via central card unit in NIC-iRACK, in-band management for remote standalone units;
> Power supply: 90~260VAC or -36~-72VDC;
> Providing 1 optical link with optional ALS function;
                     ­Single mode fiber link: up to 120Km;
                     ­Transmission distance: up to 120Km;
                     ­ Hot-swappable optical modules;


Typical Application
                 

Technical Specification

E1 Interface: Function: Provide 75 or 120 8 E1 channels Framing: Unframed (transparent) Standard: ITU-T G.703, G.823 and G.742 Connector: Build-in 8/16*BNC for 75 E1 channels Build-in 4/8*RJ-45 sockets for 120 E1 channels Code: HDB3 Baud rate:2048 Kbps ± 30ppm Transmit Level: According to G.704 Impedance: 75 for unbalanced (BNC coaxial cable);120 for balanced (RJ-45 socket) Receiving sensitivity: 0~-18dBm Transmit high voltage: 2.37V± 10%, 75Ω , 3.00V± 10%,120Ω Transmit low voltage: 0 ± 0.1V Ethernet interface specification: Function: 10/100Base-T port, support VLAN Trunk and flow control Standard: IEEE 802.3  802.3u  802.1q Interface: Ethernet and Fast Ethernet Baud rate: Full rate 10/100Mbit/s, auto-adjusting/force mode Duplex Mode:force or Auto-Negotiation on Half / Full Duplex Mode Connector: 10/100Base-T: RJ-45 jack, auto MDI/MDI-X Frame Length: 64byte(least)/1552byte(most) MAC Address: 1024 MAC Address Update: 5 Minutes Transmission medium: 10/100Base-T: CAT5 twisted pair Transmit distance: 100m for twisted pair, 2Km for

Physical Summary: Dimension: 441 mm/17.38 in(W) × 223 mm/8.79 in(D) ×44.45 mm/1.75 in (H) Weight:1.5Kg Power: Alternative AC or DC power supply: 90 to 260 VAC, 50 or 60 Hz, 15W; -36 to -72 VDC, 15W Temperature: 10-50 for operation; -20-70 for storage Humidity: ≤90% (non-condensing) Optical Interface: Function:One optical link for 4/8E1 transmission; optional SM/MM and WDM configuration, and optional ALS function Baud rate: 150Mb/s±50ppm Coding:NRZ Transmission medium: G.652, G.655, G.656 optical fiber Transmission distance: Up to 120Km