Interface Converter: FM4850
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E2 8.448Mbps G703 HSSI Converter
The Metrodata FM4850 DSU is used to interface high performance DTE equipment such as bridges or routers with HSSI interfaces to 8.448Mbps E2 leased line services.
E2 to HSSI Interface Converter
- High Spec E2 G.703 8.448Mbps interface
- HSSI port for router connection
- External Alarm relay port
- Local management port for configuration and diagnostics
- Remote configuration and testing of units across the network
- Comprehensive performance monitoring of both device and line
- Built to European Standards
- Optional remote management using SNMP and Telnet
- Optional -48 volt DC supply
The FM4850 offers conversion between an HSSI serial interface and an E2 line interface with BNC connectors.
The FM4850 has several LEDs for displaying current status, plus comprehensive configuration and diagnostics via a menu driven user interface.
Using a dedicated management channel pairs of FM4850 units can communicate with each other, allowing configuration and status checking of the remote unit.
The optional Metrodata LM1100 SNMP enabler permits remote management via either Telnet or SNMP.
Router Applications
- HSSI router to E2 8Mbps G.703 leased line conversion
- Connecting pairs of HSSI routers over an E2 8Mbps G.703 leased line
- LM1100 SNMP Enabler used with Management Data link to manage a pair of FM4850 units
This application shows an FM4850 connecting an HSSI router card to an E2 8.448Mbps leased line, such as a BT Megastream-8 service. HSSI serial ports are often the most cost effective high speed WAN port available on routers. Telecom carriers provision E2 8.448Mbps services with G.703 connectivity.
This application shows a pair of FM4850 units connecting a pair of HSSI routers via an E2 8.448Mbps leased line, such as a BT Megastream-8 service. HSSI serial ports are often the most cost effective high speed WAN port available on routers. Telecom carriers provision E2 8.448Mbps services with G.703 connectivity.
This application show a remote network management centre controlling the head office FM4850 via an LM1100 SNMP Enabler card allowing comprehensive management access including the full range of configuration changes, diagnostics and status analysis using either SNMP or Telnet, including SNMP traps. In this application a remote management data link has also been enabled to the remote FM4850 unit, allowing remote SNMP and Telnet access into this unit.
E2 Line Interface | |
| Port | G.703 75ohm interface |
| Framing | G.742 or unframed |
| Interface | BNC (75ohm) |
| Line Coding | HDB3 |
| Bit rate | 8.448 Mbps |
| Cable Lengths | |
DTE Interface | |
| Port | HSSI per EIA612, EIA613 |
| Interface | 50 way AMP (SCSI II connector) |
| Bite Rate | 8.328 Mbps (Line framed) |
| 8.448 Mbps (Line unframed) | |
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 |
| Clock Modes | Internal, Loop |
Status LEDs & Diagnostic Functions | |
| Loop backs | NI local loop, NI remote loop, DTE loop, DTE external loop |
| BERT | 2^15-1 PRBS |
| Statistics | Per G.821, 15 min, 24 hour totals |
| Major Alarm LED | LOS, LOF, SQ (E2 port) |
| Minor Alarm LED | AIS, RAI (E2 port) |
| Data LEDs | DTE Tx Data, DTE Rx Data, DTE Fault (HSSI port) |
| Test LED | Test in progress LED, test configured via diagnostics menu |
Power Supply | |
| AC Mains | 100 - 250 VAC, 50 - 400Hz, 50mA IEC connector |
| -48VDC | -36 to -72 VDC, 200 - 100mA |
Packaging | |
| Type | 1U 19 inch Rack mount |
| Dimensions | 435 x 213 x 44 mm (W x D x H) |
Environment | |
| Temp | 0 - 50 deg C |
| Humidity | 95% RH, non condensing |
| Pressure | 86 - 106 KPA |
Compliance & Approvals | |
| Performance | BS6328, G703, G823, G742, BABT#NS/4043/I/R/60455 |
| Safety | EN41003, EN60950 |
| EMC | EMC EN55032 |
| Statistics | G.821, AT&T54016: 15 min, 24 hour totals |
| Management | RFC1213 (MIB2), RFC1495 (Telnet), RFC1157 (SNMP), RFC1406 (E2/DS1/E1) |
| MetroDTE MIB (HSSI), RFC1215 (Traps) | |
| Part Number | ||
| Product | AC Mains | DC Power |
| FM4850 E2 to HSSI | 80-05-014 | 80-21-014 |
| LM1100 SNMP Enabler | 14-02-139 | |
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