Messages and Troubleshooting

Table 6-2. Troubleshooting (2 of 2)

Symptom

Possible Cause

Solutions

Not receiving data;

H DDS line rate/speed has

1.

Verify that your subscriber loop is

DSU is not

changed.

 

running at 56 or 64 CC kbps.

responding.

H Excessive BPVs causing

2.

If getting Excessive BPVs, verify

 

 

DSU to become stuck in

 

that you do not have a bad cable.

 

Autobaud mode.

 

If the cable is good, contact the

 

H Excessive Loop Loss

 

network provider.

 

causing DSU to become

3.

If getting excessive Loop Loss

 

stuck in Autobaud mode.

 

 

(dB) indications, install a higher

 

 

 

 

 

 

quality cable. Refer to Table D-2

 

 

 

in Appendix D, Model 7510

 

 

 

DSU LADS Connection

 

 

 

Distances.

 

 

4.

If the DDS Line Rate (Kbps) field

 

 

 

shows Autobaud, the DSU may

 

 

 

be stuck in Autobaud mode.

 

 

 

Configure Line Rate (Kbps) for

 

 

 

56 or 64 kbps.

 

 

5.

Run Loopback tests. Refer to

 

 

 

Running Network Tests in of

 

 

 

Chapter 5.

 

 

 

 

Power-Up Self-Test

The DSU has detected an

H

Reset the DSU and try again.

fails. Only Alarm

internal hardware failure.

H

Contact your service

LED is on after

 

 

 

representative.

power-up.

 

 

 

 

 

 

 

 

 

Resetting the DSU

The DSU can be reset locally or remotely.

To reset the DSU, follow this menu selection sequence:

Main Menu Control Reset Device

The DSU reinitializes itself, performing a Device Self-Test. Refer to Self-Test

Results Messages, Table 4-3.

Displaying DSU Identity Information

To display the DSU's system name, location, contact, serial number, model number, and software and hardware revision numbers, follow this menu selection sequence:

Main Menu Status Identity

6-4

March 1997

7510-A2-GB20-00

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Paradyne 727 Resetting the DSU, Displaying DSU Identity Information, Troubleshooting 2 Symptom Possible Cause Solutions

727 specifications

The Paradyne 727 is a cutting-edge piece of networking equipment that stands out for its robust performance and versatility in various technological environments. Designed primarily as a digital subscriber line (DSL) modem, the Paradyne 727 has gained significant traction among service providers looking to enhance their broadband offerings for residential and business customers.

One of the main features of the Paradyne 727 is its ability to support both Asymmetric Digital Subscriber Line (ADSL) and Very-high-bit-rate Digital Subscriber Line (VDSL) technologies. This dual compatibility allows for flexible deployment in different network infrastructures, whether in urban areas with high demand for broadband or in rural areas where DSL remains a feasible option. The device is capable of delivering high-speed internet access with downstream rates that can reach up to 24 Mbps for ADSL and up to 50 Mbps for VDSL, ensuring faster connectivity for users.

The Paradyne 727 is also equipped with advanced modulation technologies, such as discrete multitone modulation (DMT), which provides a superior noise immunity and allows for higher data rates over traditional DSL technologies. This capability makes it particularly beneficial in environments with varied signal quality. Moreover, the modem features an auto-sensing capability that helps it adjust to the best transmission parameters automatically, simplifying installation and maintenance for service providers.

Another significant characteristic of the Paradyne 727 is its user-friendly design. The device incorporates an intuitive web-based management interface that allows network administrators to efficiently monitor performance metrics, configure settings, and perform troubleshooting from a centralized location. This feature streamlines operations and minimizes downtime, which is crucial in maintaining service quality and customer satisfaction.

In addition to its performance and management features, the Paradyne 727 is built with security in mind. It supports both local authentication and RADIUS authentication, providing robust access control mechanisms to protect sensitive data and ensure that only authorized users can access the network. This emphasis on security contributes to the modem's appeal in enterprise settings, where data integrity is paramount.

With its comprehensive features, advanced technologies, and commitment to performance and security, the Paradyne 727 is a significant player in the world of broadband networking. Its adaptability makes it suitable for a wide range of applications, supporting the growing demand for high-speed internet access across various market segments.