GDC NMS 520
Series
Premier Network-Managed
Universal Rate Data Service Units
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301-924-7400
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GDC NMS 520 Series
Premier Network-Managed
Universal Rate Data Service Units
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Mixed LAN and Legacy Access With SNMP Management
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Specifications
DIGITAL SERVICES: |
Conventional DDS and GDS, secondary channel services; 64K clear channel, wireline; PSTN, Switched 56 K, or ISDN in dial restoral mode |
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DATA RATES: |
Synchronous: 2.4, 4.8, 9.6, 19.2, 56
and 64 kbps Asynchronous: 600, 1.2, 2.4, 4.8, 9.6, 19.2 kbps |
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DATA FORMATS |
Synchronous: Binary, serial Asynchronous: Binary, serial; 8, 9, 10 and 11-bit characters (V.14 compliant) |
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OPERATING MODE: | Full duplex; point-to-point and multipoint; point-to-point only at 64 Kbps |
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DATA ENCODING: |
Bipolar, return to zero |
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LINE REQUIREMENTS: |
4-wire, non-loaded metallic circuits |
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LINE IMPEDANCE: |
135 ohms (nominal) |
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BUSINESS MACHINE INTERFACE: |
V.35/EIA/TIA-232-E (optional EIA-530 interface) | ||||||||||||||||||||||||||||||
TRANSMITTER TIMING: | Internal, external or network timing; optional + 8-bit transmit buffer |
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RTS/CTS DELAY: |
8, 30, 60 or 90 ms at 2.4 Kbps 4 ms at 4.8 Kbps 2 ms at 9.6 Kbps 1 ms at 19.2 Kbps 0.4 ms at 56 Kbps |
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LINE MEASUREMENTS: |
Signal Level, Bipolar Violations, Error Probability, Jitter, Receive Level, Transmit Level, Sealing Current, Signal to Noise Ratio, Round Trip Delay | ||||||||||||||||||||||||||||||
NETWORK MANAGEMENT: | SSC Controller; Intelligent Front Panel (Standalone only) or SNMP management via the SC 5000 System |
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DIAL RESTORAL OPTIONS: |
DBU-89: Point-to-point , single-call analog dial backup via the PSTN DBU-56FW: Point-to-point and multipoint 4-wire restoral via Switched 56K services DBU-ISDN: Point-to-point restoral via ISDN services, compliant with the North American National-1 ISDN Network interface |
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DATA COMPRESSION OPTION: |
Compression ratio of up to 6 to 1 (typically 4 to 1 for X.25); maximum rate of 384 Kbps synchronous, 230.4 Kbps, asynchronous Accepts most standard protocols, with automatic recognition up to 5,000 bytes/block, including HDLC, SDLC, APPN, TCP/IP, ASYNC, X.25, DEC LAT (Async) |
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POWER REQUIREMENTS |
100-240 VAC, 50/60 Hz, 7.5 W nominal |
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HUMIDITY: |
Up to 95% without condensation |
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PHYSICAL CHARACTERISTICS |
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SAFETY PROTECTION: | UL recognized and CSA approved |
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INTERFERENCE PROTECTION: |
Verified to comply with FCC Part 15, Class A requirements and FCC Part 68 |
Purchase orders accepted on General
DataComm equipment
Contract Buying and Volume Discounts available !!
Please contact us 301-924-7400