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The Metrodata FM4800 DSU is used to interface high performance DTE equipment such as bridges or routers to 8.448Mbps E2 services. The DTE equipment presents an X.21 interface.
Front: FM4800 E2 to X.21 Converter
Rear: FM4800 E2 to X.21 Converter
The FM4800 can be used at either end of the Wide Area link. Error conditions and usage statistics are gathered and stored by the FM4800. Unit set-up is done via a comprehensive menu system which is accessed via a local or remote terminal.
The optional Metrodata LM1100 SNMP Enabler permits management via a LAN using an SNMP system.
- High Spec E2 G.703 8.448Mbps interface
- X.21 Data port
- External Alarm relay port
- Remote configuration and testing of units across the network
- Comprehensive performance monitoring of both device and line
- Optional SNMP management
- Optional -48 volt DC supply
- Built to European Standards
| E2 Line Interface |
| Port |
G.703, 75 ohm unbalanced |
| Interface |
BNC (75ohm) |
| Framing |
Unframed |
| Line Coding |
HDB3 |
| Bit Rate |
8.448Mbps +/- 30ppm |
| Cable Lengths |
E2 BNC RG59 = 300 |
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E2 BNC UR202 = 370m |
| DTE Interface |
| Port |
X.21 |
| Interface |
X.21: 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, DTE mode (CCITT cct113), E2 loop |
| Status LED & Diagnostics |
| Loopbacks |
NI local loop, NI remote loop, DTE loop, DTE external loop |
| Statistics |
Per G.821, 15min, 24 hour totals |
| Major Alarms |
LOS, LOF, SQ |
| Minor Alarms |
AIS, RAI |
| Data |
DTE Tx Data, DTE Rx Data, DTE Fault |
| Test |
Test via menu, Test LED on front panel |
| Status LED & Diagnostics |
| Loopbacks |
NI local loop, NI remote loop, DTE loop |
| Statistics |
Per G.821, 15min, 24 hour totals |
| Major Alarms |
LOS |
| Minor Alarms |
AIS |
| Data |
DTE Tx Data, DTE Rx Data, DTE Fault |
| Test |
Test via menu, Test LED on front panel |
| BERT |
215-1 PRBS |
| Power Supply |
| AC Mains |
100-250 VAC, 50-400Hz, 50mA IEC connector |
| -48VDC |
-36 to -72 VDC, 200 - 100mA |
| Packaging |
| Type |
1U 19inch Rackmount |
| 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 |
EN55022, EN50082 |
| Statistics |
G.821, AT&T54016:15min, 24hr totals |
| Management |
RFC1213 (MIBII), RFC1495 (Telnet), RFC1157 (SNMP), RFC1406 (DS1/E1), Metro MIB (DSU), RFC1215 (Traps) |
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Part Number |
| Product |
100-250 AC Mains |
-48 DC Power |
| FM4800 E2 - X.21 |
80-05-013 |
80-21-013 |
| LM1100 SNMP Enabler |
14-02-139 |
14-02-139 |
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