Black Box CSU MS, DSU MS manual Tech Specs, WHAT‘S Included, Technically Speaking

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Technically Speaking

Digital Data Service (DDS) is a wide-bandwidth, private leased line that transmits data in digital, rather than analog, format. DDS lines are 4-wire circuits (Transmit pair, Receive pair) linked by special repeaters and separated from conventional analog lines. They can provide a higher data-transmission rate and maintain a higher level of data integrity than analog trans- mission service.

DDS is a nationwide service of AT&T® that allows inter- connection and transport of data for the regional Bell operating companies. The telephone companies provide a DDS-compatible service within their region and provide the local loop service to DDS customers.

An ISU (Integrated Service Unit) replaces the modem in a network. A combination of the CSU (Channel Service Unit) and the DSU (Data Service Unit), it is usually called a CSU/DSU.

The CSU/DSU MS provides the standard DDS rates of 2.4, 4.8, 9.6, 19.2 kbps sync or async, and 56 kbps sync. It also provides DDS rates of 38.4 and 64 kbps.

The CSU/DSU MS supports DTE rate adaption to 2.4, 4.8, 9.6, 19.2, and 56 kbps at 56-kbps loop speed. Secondary channel operation is supported at all speeds except 64 kbps, with terminal rates of 75, 150, 300, 600, 1200, and 2400 bps.

The asynchronous primary channel is supported at all rates up to and including 19.2 kbps with secondary and nonsecondary channel operation.

Front-panel controls are used for configuration and testing. The CSU/DSU can generate and monitor either of two industry-standard test patterns during selected tests, and report the number of errors on a front-panel display. It will also respond to standard DSU and CSU loopback commands from the telephone company central office or DDS/V.54 commands from a remote CSU/DSU MS.

Seven LEDs show the status of the primary and secondary DTE interface leads.

Three data DTE connectors on the rear panel provide a primary-channel V.35 or RS-232, and a secondary-channel RS-232 port. In Switched-56 operation, the secondary channel is used for control. An 8-pin telco jack, the power cord, and a fuse are also located on the rear panel.

Each unit includes an 8-foot (2.4-m) power cord. The power cord is terminated by a 3-prong plug that connects to a grounded power receptacle.

NOTE: Use only a grounded, 115-VAC, 60-Hz receptacle.

TECH SPECS

Diagnostics — DTE, DTE/loop, DTE with test pattern, loop only, test pattern

DTE Rates — 2.4, 4.8, 9.6, 19.2 kbps sync or async; 38.4, 56, or 64 kbps sync

User Controls — (16) front-panel buttons: Enter, Up-Arrow, Down- Arrow, Cancel, 0–9, #, *

Interface — V.35 or RS-232 sync or async

Connectors — (2) DB25 female, (1) M/34 female, (1) RJ-48C Indicators — (7) LEDs: RS, CS, TD, RD, CD, ALRM, TST Power — 115 VAC, 60 Hz, 8 watts

Size — 2.3"H x 8.8"W x 10.3"D (5.8 x 22.4 x 26.2 cm) Weight — 3 lb. (1.4 kg)

WHAT‘S INCLUDED

The CSU/DSU MS

RJ-45 line cable

User’s manual

Item

Code

CSU/DSU MS

MT132V-R2

1/30/2007

724-746-5500

blackbox.com

#11457

 

 

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Contents CSU/DSU MS Typical Applications Typical DDS configurationFeatures OverviewTech Specs WHAT‘S IncludedTechnically Speaking

DSU MS, CSU MS specifications

Black Box CSU MS and DSU MS are critical components in telecommunications infrastructure, serving crucial roles in data transmission and network connectivity. CSU, or Channel Service Unit, and DSU, or Data Service Unit, are devices that allow for the connection of end-user equipment to the digital circuit of a transmission provider.

The primary function of a CSU is to connect a digital line from a service provider to the internal data network, while the DSU converts the digital signal from the CSU to a format compatible with the data terminal equipment (DTE). Together, these components ensure that data can be transmitted reliably over long distances, maintaining data integrity and quality.

One of the main features of Black Box CSU/DSU products is their support for various digital lines, including T1, E1, and T3, enabling compatibility with a wide range of telecommunication systems. The devices typically come equipped with built-in diagnostics that allow for proactive monitoring and troubleshooting. This feature aids in reducing downtime, as network administrators can quickly identify issues and implement corrective measures.

Moreover, Black Box CSU/DSU devices often support functionalities like error correction and line conditioning, enhancing data transmission reliability and minimizing latency. With features such as automatic line testing and remote management capabilities, these devices facilitate easier network maintenance.

Black Box employs advanced technologies in their CSU/DSU solutions, including integrated Ethernet bridging, which allows for the seamless integration of Ethernet networks with traditional phone lines. This feature is particularly beneficial for organizations transitioning to VoIP services, as it simplifies network architecture while still offering robust performance.

In terms of characteristics, Black Box CSU/DSU units are designed with durability and adaptability in mind. They often have modular components, allowing for easy upgrades or configuration changes as technology evolves or business needs change. This flexibility ensures that the devices can continue to meet the demands of modern networking environments.

In conclusion, Black Box CSU MS and DSU MS devices are essential for reliable and efficient telecommunications. With their extensive feature set, advanced technologies, and robust characteristics, they provide the backbone needed for seamless data communication in various industries. Their ability to integrate with existing systems while ensuring high performance and reliability makes them a preferred choice for many organizations that rely on stable and secure data transmission.