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FM4850 - HSSI Over E2 8.448Mbps G.703 |
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The Metrodata FM4850 DSU is used to interface high performance DTE equipment such as bridges or routers to 8.448Mbps E2 services. The DTE equipment presents a HSSI interface. The FM4850 can be used at either end of the Wide Area link. Error conditions and usage statistics are gathered and stored by the FM4850. 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 E2 G.703 8.448Mbps 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.742 or unframed | | Interface | BNC (75 ohm) | | Line Coding | HDB3 | | Bit Rate | 8.448 Mbps +/- 20 ppm | | Cable Lengths | E2 BNC RG59 = 150m
E2 BNC UR202 = 180m | | Port | HSSI per EIA612, EIA613 | | Interface | 50-way AMP (SCSI II connector) | | Bit Rate | 8.328 Mbps (Line framed)
8.448 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 | BS6328, G703, G823, G742
BABT # NS /4043/I/R/60455 | | 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 | | | | | | FM4850 E2 - HSSI | 80-05-014 | 80-21-014 | | LM1100 SNMP Enabler | 14-02-139 | 14-02-139 | |
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