Features, Overview, Tech Specs | Black Box CSU/DSU specification

FEATURES

•Use built-in SNMP agent for easy management or manage from an attached ASCII terminal.

•SNMP MIB II compliant.

•SLIP interface.

•Easy troubleshooting for the CSU/DSU and your network.

•Works over Frame Relay and supports SW56.

OVERVIEW

Configure, control, and diagnose your SNMP-manageable CSU/DSU right from your central LAN management console and get total network management, too.

The BLACK BOX® DDS CSU/DSU provides an intelligent interface between a 4-wire Digital Data Service (DDS) network and your data terminal equipment. It’s flexible enough to work in any 56-kbps DDS application and is also ideal for dedicated point-to-point links within a WAN. The DDS CSU/DSU also provides easy WAN access to LAN internetworking, CAD/CAM, and videoconferencing equipment.

You can attach this single-port device to an ASCII terminal or an SNMP workstation using its built-in SNMP agent, accessible through a SLIP interface. SNMP MIB II compliance makes this 56K unit compatible with popular network management systems like HP® OpenView®.

For SW56 applications, you can dial a stored number when a DTE signal is raised, from the console, or via SNMP. You can also operate SW56 dial/disconnect and answer functions through its front-panel rocker switch.

LEDs indicate NET mode and status, and DTE Mode. Plus, you can use loopbacks and a bit error rate test (BERT) pattern for diagnostics.

The user interface configuration is controlled with access password protection and is menu driven. A graphically illustrated configuration screen shows alarms and operation status, as well as BERT diagnostic information. The DDS CSU/DSU constantly collects statistical information on the network, DTE, and SNMP (SLIP) interfaces as it searches for network degradation. When it detects a problem, you can run loopback tests and a BERT test to isolate its source.

In addition, the DDS CSU/DSU offers line-driving capabilities, supporting distances of up to 7 miles (11.2 km) at 56 kbps over 100-ohm 22 AWG shielded twisted-pair cable.

TECH SPECS

Compatibility — AT&T® Digital Data System (DDS) Pub 62310, AT&T ACCUNET Switched 56, US Sprint® VPN 56

Data Rate — 56 kbps

Diagnostics — V.54, DDS, DTE, local-unit and remote-unit loopbacks; internal 511 BERT

Distance — Line driving capability up to 7 mi. (11.2 km) at 56 kbps on 22 AWG shielded twisted-pair cable

MTBF — 100,000 hours Operation — Full-duplex Protocol — Sync

User Controls — (1) Loopback test button Interface ––V.35, SLIP

Connectors — (1) RJ-48 for NET, (1) DB26 F, (1) RJ-45 for terminal,

(1) RJ-45 for printer, (1) 5-pin DIN for power

Indicators — (3) 4-State LEDs: (1) NET Mode LED (Off=Inactive, Green=Active, Yellow=Test, Red=N/A);

(1)NET Status LED (Off=N/A, Green=Normal, Yellow=Carrier Alarm, Red=LOS);

(1)DTE Mode LED: (Off=Inactive, Green=Active, Yellow=Test, Red=N/A) Temperature Tolerance — 32 to 122°F (0 to 50°C)

Humidity Tolerance — Up to 95%, noncondensing Power — External 115 VAC, 60 Hz

Size — 2"H x 7.7"W x 10.5"D (5.1 x 19.6 x 26.7 cm) Weight — 3 lb. (1.4 kg)

Item	Code
DDS CSU/DSU with SNMP (56K)	MT147A

Why Buy From Black Box? Exceptional Value. Exceptional Tech Support. Period.

Recognize any of these situations?

•You wait more than 30 minutes to get through to a vendor’s tech support.

•The so-called “tech” can’t help you or gives you the wrong answer.

•You don’t have a purchase order number and the tech refuses to help you.

•It’s 9 p. m. and you need help, but your vendor’s tech support line is closed.

According to a survey by Data Communications magazine, 90% of network managers surveyed say that getting the technical support they need is extremely important when choosing a vendor. But even though network managers pay anywhere from 10 to 20% of their overall purchase price for a basic service and support contract, the technical support and service they receive falls far short of their expectations—and certainly isn’t worth what they paid.

At Black Box, we guarantee the best value and the

best support. You can even consult our Technical Support Experts before you buy if you need help selecting just the right component for your application.

Don’t waste time and money—call Black Box today.

	9/17/2007	724-746-5500
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CSU/DSU specifications

A Black Box CSU/DSU (Channel Service Unit/Data Service Unit) is a crucial component used in telecommunications to interface between digital local area networks (LANs) and digital carrier services such as T1, E1, and other leased line connections. Its primary function is to convert digital signals from a router or network device into a format suitable for transport over a phone company's digital circuit, while also performing necessary signal conditioning and line monitoring.

One of the main features of a Black Box CSU/DSU is its ability to provide termination for digital lines. This means it can effectively manage the signal integrity and conversion between the network and the telecommunication provider's infrastructure. Additionally, it offers features such as loopback testing, which enables network administrators to troubleshoot connections by temporarily looping the incoming signal back to the source.

The technology incorporated in Black Box CSU/DSUs includes advanced digital signal processing algorithms that enhance signal quality and reduce error rates. Many models support multiple data rates which provide flexibility for various bandwidth requirements and support for legacy systems while ensuring compatibility with modern networking equipment.

Another significant characteristic of Black Box CSU/DSUs is their monitoring capabilities. They often include diagnostic tools that allow professionals to monitor line performance, analyze error statistics, and receive alerts regarding potential issues such as line failures. This proactive monitoring contributes to maintaining network reliability by enabling timely intervention before problems escalate.

Furthermore, modern Black Box CSU/DSUs may incorporate additional functionalities, such as integrated SNMP (Simple Network Management Protocol) support for easy remote management and configuration, and status LEDs for quick visual reference regarding operational status.

In summary, a Black Box CSU/DSU serves as an essential intermediary in digital communications, offering robust features and technologies for signal management, troubleshooting, and performance monitoring. Its ability to effectively bridge the gap between LANs and telecommunication services makes it invaluable in ensuring reliable and efficient network connectivity. Whether implemented in corporate settings or smaller enterprises, it plays a pivotal role in the smooth operation of digital communications.