Testing

Loopbacks

Loopbacks can be started from a variety of points in the network. Refer to

Table 7-1 for further information.

Table 7-1. Loopbacks

Loopback Type

Initiated By

Notes

 

 

 

 

Bilateral Loopback

H

ATI

When enabled, running a DSU

 

H

NMS

loopback also automatically

 

starts a local loopback. Refer to

 

 

Remote unit sending

 

H

Table A-3,Data Port Options, to

 

 

V.54 sequence

enable.

 

 

 

 

56 kbps CSU Loopback

H

ATI (Network tests)

When initiated by the network,

(Non-latching loopback)

H

NMS

CSU Loopback cannot be

64 kbps CC CSU Loopback

disabled by the user. When IMC

 

DDS Network, by

(Latching loopback)

H

is enabled, the aggregate data

 

 

loop current reversal

is looped back to the network.

 

 

 

 

DSU Loopback (Digital)

H

ATI

When IMC is enabled, only user

 

H

NMS

data is looped back to the

 

network. Refer to Table A-3,

 

 

 

 

 

 

Data Port Options.

 

 

 

 

Local Loopback

H

ATI

Control via CT141 can be

 

H

DTE via CT141

disabled. Refer to Table A-3,

 

Data Port Options.

 

 

NMS

 

H

 

 

 

 

 

Network-initiated

H

DDS Network

When IMC is enabled, the

56 kbps DSU Loopback

 

 

aggregate data stream is looped

(Non-latching loopback)

 

 

back to the network. Cannot be

 

 

 

disabled by user.

 

 

 

 

Network-initiated

H

DDS Network

Includes optional data

64 kbps CC DSU Loopback

 

 

scrambling and uses 25-second

(Latching loopback)

 

 

timer to detect the network

 

 

 

sequence. When IMC is

 

 

 

enabled, the aggregate data

 

 

 

stream is looped back to the

 

 

 

network. Can be disabled by

 

 

 

user.

 

 

 

 

Remote Digital Loopback

H

Remote unit sending

Same as a DSU Loopback but

 

 

V.54 sequence

initiated by a remote unit via

 

 

 

V.54 sequence. When IMC is

 

 

 

enabled, only user data is

 

 

 

looped back to the network. Can

 

 

 

be disabled locally. Refer to

 

 

 

Table A-2,Network Interface

 

 

 

Options.

 

 

 

 

V.54 Sequences to remote

H

ATI

Control via CT140 can be

unit

H

NMS

disabled. Refer to Table A-3,

 

Data Port Options.

 

 

DTE via CT140

 

H

 

 

 

 

 

7612-A2-GB20-10

November 1997

7-7

Page 57 Page 59
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Paradyne 7612 SNMP DSU manual Loopbacks Loopback Type Initiated By
Page 57 Page 59

7612 SNMP DSU specifications

The Paradyne 7612 SNMP DSU (Data Service Unit) is a robust and versatile device designed for effective communication in data networks. This device is particularly suited for businesses that require reliable connectivity to support their operations. The 7612 integrates advanced technologies that enhance performance, scalability, and ease of management.

One of the main features of the Paradyne 7612 is its support for SNMP (Simple Network Management Protocol), which allows for comprehensive monitoring and management of network devices. This capability ensures that network administrators can easily track performance metrics and troubleshoot issues in real time, thereby minimizing downtime and enhancing overall operational efficiency.

The 7612 also provides multiple interface options, including T1/E1 and fractional T1, enabling users to select the most suitable bandwidth for their specific requirements. With full duplex capabilities, the device can handle simultaneous data transmission and reception, ensuring efficient communication and high throughput.

In terms of security, the Paradyne 7612 incorporates features such as port security and access control lists (ACLs). These measures protect the network from unauthorized access, ensuring that sensitive data remains secure during transmission. Additionally, the DSU incorporates intelligent diagnostic features, such as loopback testing and error monitoring, enabling proactive identification and resolution of network issues.

The device is built with a modular design, allowing for easy upgrades and scalability as business needs grow. This flexibility ensures that organizations can adapt their network infrastructure without the need for significant overhauls or extensive downtime.

The Paradyne 7612 also boasts an intuitive web-based user interface, simplifying configuration and management tasks. Network administrators can access settings and monitor performance from any location, streamlining network management processes.

With a focus on reliability, the 7612 is designed to operate in various environmental conditions, offering features such as extended temperature ranges and robust construction, making it suitable for deployment in both indoor and outdoor settings.

In summary, the Paradyne 7612 SNMP DSU stands out in the realm of data communication devices with its advanced SNMP capabilities, versatile interface options, robust security features, modular design, and user-friendly management interface. These characteristics make it an ideal solution for enterprises seeking to maintain reliable, scalable, and secure data communication networks.
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