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The Metrodata FM4000 DSU is used to interface high performance DTE equipment such as bridges or routers to 2.048Mbps E1 services. The fractional E1 service is allocated on an n*64Kbps basis. The DTE equipment may present an X21 or a V35 interface.
Front: FM4000 Fractional E1 to X.21/V.35 Converter
Rear: FM4000 Fractional E1 to V.35 Converter
Rear: FM4000 Fractional E1 to X.21 Converter
FM4000s are used in pairs with one unit at either end of the Wide Area link. Error conditions and usage statistics are gathered and stored by the FM4000. 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 a SNMP system.
- High Spec E1 G703 2.048Mbps interface
- Fractional E1 by allowing n*64Kbps channels
- X21 or V35 ports
- 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
| E1 Line Interface |
| Port |
G.703, 75 ohm unbalanced/120 ohm balanced |
| Interface |
BNC (75ohm) / RJ45 (120 ohm) |
| Framing |
G.704 (with or without CRC4) or unframed |
| Line Coding |
HDB3 |
| Bit Rate |
2.048Mbps +/- 50ppm |
| Barrier |
Fully Barriered per EN41003 |
| Cable Lengths |
E1 BNC RG59 = 600m |
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E1 BNC UR202 = 750m |
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E1 RJ45 Belden 8132 = 175m |
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E1 RJ45 Belden 9841 = 300m |
| DTE Interface |
| Port |
X.21 or V.35 |
| Interface |
X.21: ISO4903 15 way female D-type |
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V.35: ISO2593 34 way M rack |
| Bit Rate |
2.048 Mbps or N*64Kbps (n = 1 to 31) |
| Configuration & Management |
| Type |
Menu Driven |
| Access |
System console, telnet, SNMP |
| Interface |
V.24, Ethernet 10 BaseT via RJ45 |
| Security |
Access by 2-level password |
| Clock Modes |
Internal, loop |
| Status LED & Diagnostocs |
| Loopbacks |
Local loop, Remote loop |
| BERT |
215-1 PRBS |
| 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 |
| Power Supply |
| AC Mains |
100-250VAC, 50-400Hz, 50mA IEC Connector |
| -48VDC |
-36 to -72VDC, 200-100mA, Buccaneer connector |
| Packaging |
| Type |
1U 19inch Rackmount |
| Dimensions |
435 x 213 x 43 mm (W x D x H) |
| Environment |
| Temp |
0-50 deg C |
| Humidity |
95% RH, non-condensing |
| Pressure |
86-106 KPA |
| Compliance & Approvals |
| Performance |
G703, G.704, G.706, G.823 |
| BNC Version |
OTR.001 2DS, BABT#NS/4043N/P/603813 |
| RJ45 Version |
CTR12, CTR13, BABT#AA606631 |
| Safety |
EN41003, EN60950 |
| EMC |
EN55022, EN50082 |
| Statistics |
G.821, AT&T54016:15min, 24hour 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 |
| X.21 - E1 BNC |
80-05-005 |
80-21-005 |
| V.35 - E1 BNC |
80-05-006 |
80-21-006 |
| X.21 - E1 RJ45 |
80-05-007 |
80-21-007 |
| V.35 - E1 RJ45 |
80-05-008 |
80-21-008 |
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