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The Metrodata FM4500 DSU is used as a drop/insert multiplexer to mix voice and data traffic on a single E1 2.048 Mbps link. The FM4500 provides a fractional E1 n*64Kbps drop port for the PABX equipment, and remaining E1 service bandwidth may be allocated to the four X.21 or V.35 ports to carry traffic to or from bridges or routers.
The FM4500 can be used at either end of the Wide Area link. Error conditions and usage statistics are gathered and stored by the FM4500. 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.
- Mix Voice and Data on the same leased line
- High Spec E1 G.703 2.048 Mbps interface (BNC or RJ45)
- Four Data ports (either all X21 or V35) and One E1 Drop 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
| E1 Line Interface |
| Port |
G.703 75ohm unbalanced (BNC) or 120 ohm balanced (RJ45) |
| Framing |
G.704 (with or without CRC4) |
| Interface |
BNC (75ohm) or RJ45 (120ohm) |
| 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 |
| Bite Rate |
N*64kbps (n = 1 to 31) |
| 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 |
| Line E1 Timing |
Internal, DTE mode (CCITT cct 113), Through DTE Timing |
| Transmit |
Line Rx, Internal, DTE (cct 113) |
| Receive |
Line Rx, DTE (cct 113)
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| Status LED & Diagnostics |
| Loopbacks |
Local loop, Remote loop |
| Statistics |
Per G.821, 15min, 24 hour totals |
| Major Alarms |
LOS, LOF, SQ for Line E1 & DTE E1 |
| Minor Alarms |
AIS, RAI for Line E1 & DTE E1 |
| Data |
DTE Tx Data, DTE Rx Data, DTE Fault (x4) |
| Test |
Test via menu, Test LED on front panel |
| Power Supply |
| AC Mains |
100-250 VAC, 50-400Hz, 50mA IEC connector |
| -48VDC |
-36 to -72 VDC, 200 - 100mA |
| Packaging |
| Type |
1.5U 19inch Rackmount |
| Dimensions |
435 x 213 x 65mm (W x D x H) |
| Environment |
| Temp |
0 - 50 deg C |
| Humidity |
95% RH, non condensing |
| Pressure |
86 - 106 KPA |
| Compliance & Approvals |
| Performance |
G.703, G.704, G.706, G.823 |
| BNC Version |
OTR.001 2DS, BABT#NS/4043/I/P/604060 |
| RJ45 Version |
CTR12, CTR13, BABT#606272 |
| 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 |
| BNC X.21 to E1 |
80-05-009 |
80-21-009 |
| BNC V.35 to E1 |
80-05-010 |
80-21-010 |
| RJ45 X.21 to E1 |
80-05-011 |
80-21-011 |
| RJ45 V.35 to E1 |
80-05-012 |
80-21-012 |
| LM1100 SNMP Enabler |
14-02-139 |
14-02-139 |
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