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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.

Product Features

  • 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

Specifications

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

E1 BNC UR202 = 750m

E1 RJ45 Belden 8132 = 175m
E1 RJ45 Belden 9841 = 300m

DTE Interface
Port X.21 or V.35
Interface X.21: ISO4903 15 way female D-type
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)

Ordering Information

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