E1 Multiplexer: FM4500

FM4500 converging multiple voice and data applications across an E1 2Mbps G.703/G.704 leased line

This application shows a pair of FM4500 units connecting together 2 sites with multiple independent applications via an E1 G.703 2.048Mbps leased line, such as a BT Megastream-2 service. X.21 serial ports are often the most cost effective WAN port available on routers and other equipment such as video conferencing equipment, whilst PBXs have Fractional E1 G.704 interfaces. The FM4500 mutliplexes all of these different voice and data information streams together onto a single E1 circuit, and then demultiplexes them back out again at the remote site.

FM4500 being used to converge multiple sub rate Nx64kbps services onto a single E1 2Mbps G.703 leased line

This application shows an FM4500 unit connecting four Nx64kbps sub rate services over a single E1 2Mbps G.703/G.704 leased line. In this way several sites in close proximity can be connected together via cheaper leased lines and share the cost of a single longer distance leased line thereby enabling considerable savings. Multiple FM4500 units can be cascaded in this application through connection via the E1 drop port.

LM1100 SNMP Enabler used with Management Datalink to manage a pair of FM4500 units

This application show a remote network management centre controlling the head office FM4500 via an LM1100 SNMP Enabler card allowing comprehensive management access including the full range of configuration changes, diagnostics and status analysis using either SNMP or Telnet, including SNMP traps. In this application a remote management datalink has also been enabled to the remote FM4500 unit, allowing remote SNMP and Telnet access into this unit.

The FM4500 offers conversion between multiple X.21 or V.35 serial interfaces (either all X.21 ports or all V.35 ports) and an E1 line interface with BNC or RJ45 connector options. An E1 drop port is also supported for connection to a PBX or E1 router, or alternatively cascading onto another FM4500 unit (either both E1 ports have BNC connectors or both have RJ45 connectors).

Fractional operation allows a number of 64kbps timeslots to be active, up to a maximum of 31 timeslots for a single E1 line. If timeslot 16 is bypassed, then a maximum of 30 timeslots (channels) can be accommodated between the 5 user ports.

The FM4500 has several LEDs for displaying current status, plus comprehensive configuration and diagnostics via a menu driven user interface.

It is possible to connect the FM4500 to EIA-530 or RS-449 equipment using conversion cables.

Using a dedicated management timeslot pairs of FM4500 units can communicate with each other, allowing configuration and status checking of the remote unit.

The optional Metrodata LM1100 SNMP enabler permits remote management via either Telnet or SNMP.

E1 Converters

• DC1000: E1 G.703 to X.21
• DC1200: E1 G.703 to V35
• DC3000: Fractional E1 G.704 to X.21
• DC3200: Fractional E1 G.704 to V.35
• WC1000: Ethernet over E1 G.703
• FC1X00: E1 over Fibre (MM/SMSH/SMLH)
• FM4000: Fractional E1 G.704 to X.21/V.35 with SNMP Converter
• FM4200: Fractional E1 G.704 to E1 + X.21/V.35 with SNMP Multiplexer
• FM4500: Fractional E1 G.704 to E1 + 4xX.21/V.35 with SNMP Multiplexer
• Emux: Multiple E1 over Fibre Multiplexer
• MetroLAN1000: Multiple E1/T1/Ethernet Fibre Multiplexer
• MetroLAN2000: Multiple E1/T1/E3/DS3/Ethernet Fibre Multiplexer