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FM4900 - HSSI Over E3 34.368Mbps G.703 |
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The Metrodata FM4900 DSU is used to interface high performance DTE equipment such as bridges or routers to 34.368Mbps E3 services. 
The DTE equipment presents an HSSI interface. The FM4900 can be used at either end of the Wide Area link. Error conditions and usage statistics are gathered and stored by the FM4900. 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. Product Features - High Spec E3 G.703 34.368Mbps interface
- HSSI 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
Application Diagram 
Specifications | Port | G.703, 75 ohm unbalanced | | Framing | G.751 or unframed | | Interface | BNC (75 ohm) | | Line Coding | HDB3 | | Bit Rate | 34.368 Mbps +/- 20 ppm | | Cable Lengths | E3 BNC RG59 = 150m
E3 BNC UR202 = 180m | | Port | HSSI per EIA612, EIA613 | | Interface | 50-way AMP (SCSI II connector) | | Bit Rate | 34.099 Mbps (Line framed)
34.368 Mbps (Line unframed) | | Type | Menu Driven | | Access | System console,
Telnet,
SNMP | | Interface | V.24,
Ethernet 10BaseT via RJ45 | | Security | Access by 2-level password | | System | Non-volatile set-up | | Clock Modes | Internal, loop | | | 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 | | AC Mains | 100-250 VAC, 50-400Hz,
50mA IEC connector | | -48VDC | -36 to -72 VDC, 200-100mA | | Type | 1U 19inch Rackmount | | Dimensions | 435 x 213 x 44 mm (W x D x H) | | Temp | 0 - 50 deg C | | Humidity | 95% RH, non-condensing | | Pressure | 86-106 KPA | | Performance | G703, G751, G823, CTR24
BABT # NS /4043/I/V/606274, NTR6 | | Safety | EN41003, EN60950 | | EMC | EN55022, EN50082 | | Statistics | G.821, AT&T54016:15 min, 24hr totals | | Management | RFC1213 (MIB II), RFC1495 (Telnet),
RFC1157 (SNMP), RFC1406 (DS1/E1),
Metro MIB (DSU), RFC1215 (Traps) | | | Ordering Information | | | | | | FM4900 E3 - HSSI | 80-05-015 | 80-21-015 | | LM1100 SNMP Enabler | 14-02-139 | 14-02-139 | |
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