Interface Converter: FM4800
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E2 8.448Mbps G.703 to X.21 Converter
The Metrodata FM4800 DSU is used to interface high performance DTE equipment such as bridges or routers with X.21 interfaces to 8.448Mbps E2 leased line services.
E2 to X.21 Interface Converter
- High Spec E2 G.703 8.448Mbps interface
- X.21 port for router connection
- External Alarm relay port
- Local management port for configuration and diagnostics
- Comprehensive performance monitoring of both device and line
- Built to European Standards
- Optional remote management using SNMP and Telnet
- Optional -48 volt DC supply
The FM4800 offers conversion between an X.21 serial interface and an E2 line interface with BNC connectors.
The FM4800 has several LEDs for displaying current status, plus comprehensive configuration and diagnostics via a menu driven user interface.
The optional Metrodata LM1100 SNMP enabler permits remote management via either Telnet or SNMP.
Router Applications
- X.21 router to E2 8Mbps G.703 leased line conversion
- Connecting pairs of X.21 routers over an E2 8Mbps G.703 leased line
This application shows an FM4800 connecting an X.21 router card to an E2 8.448Mbps leased line, such as a BT Megastream-8 service. X.21 serial ports are often the most cost effective WAN port available on routers. Telecom carriers provision E2 8.448Mbps services with G.703 connectivity.
This application shows a pair of FM4800 units connecting a pair of X.21 routers via an E2 8.448Mbps leased line, such as a BT Megastream-8 service. X.21 serial ports are often the most cost effective WAN port available on routers. Telecom carriers provision E2 8.448Mbps services with G.703 connectivity.
E2 Line Interface | |
| Port | G.703, 75 ohm unbalanced |
| Interface | BNC (75ohm) |
| Framing | Unframed |
| Line Coding | HDB3 |
| Bit Rate | 8.448Mbps +/- 30ppm |
| Cable Lengths | RG59 = 300, UR202 = 370m |
DTE Interface | |
| Port | X.21 |
| Interface | ISO4903 15 way female D-type |
| Bit Rate | 8.448Mbps |
Configuration & Management | |
| Type | Menu Driven |
| Access | System console, Telnet, SNMP |
| Interface | V.24, Ethernet 10BaseT via RJ45 |
| Security | Access by 2 level password |
| System | Non volatile setup |
| Clock Modes | Internal, Loop, Terminal Timing (CCITT cct113) |
Status LEDs & Diagnostic Functions | |
| Loop backs | NI local loop, NI remote loop, DTE loop |
| BERT | 2^15-1 PRBS |
| Statistics | Per G.821, 15 min, 24 hour totals |
| Major Alarm LED | LOS (E2 port) |
| Minor Alarm LED | AIS (E2 port) |
| Data LEDs | DTE Tx Data, DTE Rx Data, DTE Fault (X.21 port) |
| Test LED | Test in progress LED, test configured via diagnostics menu |
Power Supply | |
| AC Mains | 100 - 250 VAC, 50 - 400Hz, 50mA IEC connector |
| -48VDC | -36 to -72 VDC, 200 - 100mA |
Packaging | |
| Type | 1U 19 inch Rack mount |
| Dimensions | 435 x 213 x 44 mm (W x D x H) |
Environment | |
| Temp | 0 - 50 deg C |
| Humidity | 95% RH, non condensing |
| Pressure | 86 - 106 KPA |
Compliance & Approvals | |
| Performance | BS6328, G703, G823, BABT#NS/4043/I/P/603917 |
| Safety | EN41003, EN60950 |
| EMC | EMC EN55032 |
| Statistics | G.821, AT&T54016: 15 min, 24 hour totals |
| Management | RFC1213 (MIB2), RFC1495 (Telnet), RFC1157 (SNMP), RFC1406 (E2/DS1/E1) |
| MetroDTE MIB (X.21), RFC1215 (Traps) | |
| Part Number | ||
| Product | AC Mains | DC Power |
| FM4800 E2 - X.21 | 80-05-013 | 80-21-013 |
| LM1100 SNMP Enabler | 14-02-139 | |
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