FCC regulations require that the following information be provided in this manual:

1.

This equipment complies with Part 68 of the FCC rules. On the bottom of the

 

 

equipment housing is a label that shows the FCC registration number and Ringer

 

 

Equivalence Number (REN) for this equipment, if applicable. If required, this

 

 

information must be given to the telephone company.

 

2.

The following information may be required when applying to the local telephone

 

 

company for leased line facilities.

 

 

 

 

 

 

 

 

 

 

 

 

Service Type

Digital Facility

Service Order Code

 

Network

 

 

 

Interface Code

 

 

Jacks

 

 

 

 

 

 

 

 

 

56 kbps Digital Interface

04DU5-56

6.0F

 

RJ-48S

 

 

 

 

 

 

3.

An FCC compliant telephone cord with a modular plug may be provided with

 

 

this equipment. This equipment is designed to be connected to the telephone net-

 

 

work or premises wiring using a compatible modular jack, which is FCC Part 68

 

 

compliant. See Chapter 2, Installation on page 2-1 for details.

 

4.

If this equipment causes harm to the telephone network, the telephone company

 

 

may temporarily discontinue service. If possible, advance notification is given;

 

 

otherwise, notification is given as soon as possible. The telephone company will

 

 

advise the customer of the right to file a complaint with the FCC.

 

5.

The telephone company may make changes in its facilities, equipment, operations,

 

 

or procedures that could affect the proper operation of this equipment. If this hap-

 

 

pens, the telephone company will provide advance notification and the opportunity

 

 

to make the necessary modifications to maintain uninterrupted service.

 

6.

If experiencing difficulty with this equipment, please contact ADTRAN for repair and

 

 

warranty information. If the equipment is causing harm to the network, the telephone

 

 

company may request this equipment to be disconnected from the network until the

 

 

problem is resolved or it is certain that the equipment is not malfunctioning.

7.

This unit contains no user serviceable parts.

 

 

 

8.

The FCC recommends that the AC outlet to which equipment requiring AC

 

 

power is to be installed is provided with an AC surge arrester.

 

vii

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ADTRAN DSU 56 user manual Service Type Digital Facility Service Order Code
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DSU 56 specifications

The ADTRAN DSU 56 is an essential device for businesses and organizations looking to establish reliable serial communication over digital circuits. A Data Service Unit (DSU) acts as a bridge, converting digital data from a Local Area Network (LAN) into a format suitable for transmission over telephone lines or other digital links. The DSU 56 is specifically designed to operate at 56 Kbps, making it a vital component in many networking setups where higher bandwidth is unnecessary.

One of the main features of the ADTRAN DSU 56 is its ability to support a variety of interfaces. It is equipped with both V.35 and RS-232 ports, allowing for flexible connectivity options to diverse networking equipment and configurations. This versatility ensures that organizations can easily integrate the DSU 56 into their existing telecommunications infrastructure.

The DSU 56 is built on advanced technologies that ensure efficient data transfer and reliability. It incorporates error correction mechanisms and extensive diagnostic capabilities, which help identify and troubleshoot issues quickly. This is particularly important in mission-critical applications where downtime can lead to significant operational disruptions.

In addition to reliable data conversion, the DSU 56 offers features like loopback testing and performance monitoring. These functionalities enable network administrators to assess the health and performance of the connection with ease. Loopback tests can be initiated locally or remotely, allowing for thorough testing of the entire data path without disrupting ongoing operations.

Another notable characteristic of the ADTRAN DSU 56 is its compact and robust design. It is built to withstand various operating conditions, making it suitable for deployment in different environments, including data centers and remote installations. The device is also energy efficient, contributing to lower operational costs.

The DSU 56 supports various protocols, such as Frame Relay and PPP, ensuring compatibility with numerous public and private network infrastructures. This adaptability makes it a valuable asset for businesses transitioning to digital communication systems or those seeking to enhance their existing setups.

In conclusion, the ADTRAN DSU 56 stands out as a reliable and versatile solution for organizations needing to facilitate effective data communication over digital circuits. Its robust features, combined with advanced technologies, position it well in the marketplace, making it a choice for businesses focused on maintaining high-quality connectivity.
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