ATM Network Termination STM1 Converter
- High Performance ATM Networking
- Conversion between WAN & local ATM or CE equipment
- European & North American interface standards supported
- Remote configuration and testing of units across the network
- User friendly set-up menus - easy to install & configure
- Comprehensive performance monitoring & diagnostics
- Integral SNMP management
- All units 19 inch rack-mountable, 1U high
- Optional -48 volt DC supply
The DSU is configured for service via a menu system which can be displayed on a terminal or PC workstation either locally or via a LAN.
A range of interfaces for both fibre and copper media are available. Separate models support native ATM traffic streams or Circuit emulation traffic for carrying video or voice bundles. Important features of all Metrodata DSUs are built in diagnostics for identifying device or network faults and Performance monitoring statistics which are stored for a 24 hour period.
The Metrodata ATM Network Termination DSU (NTU) helps to optimise the cost of network cabling between the new public optical networks being installed by Carriers and existing legacy wiring on Customer premises. This legacy wiring often consists of multi-mode fibre
and /or twisted pair copper on an ATM local area network. The Metrodata NTU converts the Carrier's single-mode optical fibre interface to the legacy wiring interface. This can save substantial costs by eliminating the need to rewire the Customer premises.
Another scenario may involve the need to extend the range of a multi-mode optical ATM local area network to a wider area, perhaps up to 50 kilometres. The Metrodata NTU provides conversion from the local multi-mode fibre to a single mode fibre which is used for the wide area connection.
The Metrodata NTU also provides management and line monitoring functions as well as diagnostic loop tests. These features provide an effective quality control facility for both.
The interface options provided for the ATM NTU are given in the table below.
| Customer Interfaces | Multimode SC Connector | RJ45 Electrical Converter |
| Network Interfaces | ||
| Short Haul Singlemode SC Connector | Yes | Yes |
| Long Haul Singlemode SC Connector | Yes | Yes |
| BNC Electrical Coax Connector Pair | Yes | Yes |
Application Diagram
Environment |
|
| Temp | 0 - 50 deg |
| Humidity | 0 - 95% RH, non condensing |
| Pressure | 86 - 106 KPA |
Power Supply |
|
| AC Mains | 100 - 250VAC, 50-400Hz, 250mA, IEC connector |
| DC Power | -36 to -72 VDC, 200-100mA |
Packaging |
|
| Type | 1U, 19inch rackmount |
| Dimensions | 425 x 213 x 44 (W x D x H) |
Compliance |
|
| Safety | EN60950 |
| EMC | EN55022, EN50082 |
| Management | RFC1213 (MIBII), RFC1495 (Telnet), RFC1157 (SNMP), RFC1406 (DS1/E1), Metro MIB (DSU), RFC1215 (Traps) |
| Statistics | G.821, AT&T54016:15min, 24hr totals |
Status & Diagnostics |
|
| Loopbacks | Local per port |
| L0/1 Stats | Transmission faults |
| L2 Stats | Cell throughput, good cells, bad cells, corrected cells |
Alarms |
|
| Line | Major, Minor |
| UNI | ATM Uni Fault |
| Part Number | ||
| Electrical User Equipment Interfaces | 100-250 AC Mains | -48 DC Power |
| RJ45 - BNC STM-1 | 80-10-110 | 80-22-110 |
| RJ45 - SM SC SH STM-1 | 80-10-108 | 80-22-108 |
| RJ45 - SM SC LH STM-1 | 80-10-109 | 80-22-109 |
| Part Number | ||
| Fibre User Equipment Interfaces | 100-250 AC Mains | -48 DC Power |
| MM SC - BNC STM-1 | 80-10-098 | 80-22-098 |
| MM SC - SM SC SH STM-1 | 80-10-080 | 80-22-080 |
| MM SC - SM - SC LH STM-1 | 80-10-089 | 80-22-089 |
