Pub. 42004-481B

VoIP Telephone Basic Programming Guide Page 28 of 28

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Troubleshooting

With these basic parameters configured, the telephone should operate normally. If additional

functionality is needed, please visit GAI-Tronics website (www.gai-

tronics.com/products/manuals_specs.htm). The following is a list of the more common problems and

solutions. If your problem is not shown here check the website for more recent updates, or contact GAI-

Tronics for support.

Problem Possible Solution

Is the unit powered

up?

Look for two LEDs on the main circuit board - there is a power LED and a

heartbeat LED. The power LED lights continuously as soon as power is

applied, the heartbeat flashes slowly once the firmware is running - usually

within 40 seconds after power is applied.

If the power LED doesn't light, check the power supply to the unit. Once power

is restored the unit will not function until the heartbeat LED is flashing.

I can’t access the web

pages.

If the unit is correctly powered up, but you cannot browse to its web pages over

the network, you will usually need to make a serial connection to the unit and

check the following using the Command Line Interface:

 Are the IP and UNIT settings correct?

 Is the web server enabled?

 Can the telephone ping other destinations on the network? The IP module

has PING and TRACEROUTE functions to help troubleshoot routing

problems.

 Some switches may not auto-negotiate speed correctly - try changing the

LAN speed (UNIT module) from AUTO to 10.

I can’t make calls

If the unit can ping (and be pinged by) its intended call destination, call

connection problems are usually due to proxy or registration issues.

 Check that the SIP server is listed on the GAI-Tronics website as having

been tested with GAI-Tronics telephones.

 Check that the proxy settings are correct and that both end points are

properly registered.

 If the SIP server requires authentication, check that the user names and

passwords match between the telephone and the server.

 Check the current status page as the call is being set up, refreshing

frequently to see changes. The current status of the call will be displayed,

usually revealing where the problem lies.

Note that GAI-Tronics VoIP units are SIP only - calls will not connect using

H.323, SCCP or other VoIP call connection protocols.

Calls connect but

there is no speech (or

sound is garbled.

Audio problems are usually due to codec issues.

Check that both end points can use the same codec, and that nothing will

prevent them negotiating correctly. If necessary, reduce the number of choices

in the codec list (on the AUDIO page) or change the preference order.

Also, particularly where bandwidth is limited, the network should be set to

provide Quality of Service (QoS) and/or to assign a high priority to voice traffic.

It may be necessary to adjust the RTPTOS field on the SIP page.

The FRAMES and SAMPLE values on the Auto Settings page may need to be

adjusted. Contact GAI-Tronics for instructions.

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Reference Manual

NetPath 2000

Table of Contents

Appendix A Specifications

About this Manual

Returning a Unit to Verilink

Preface ix

Introduction

NetPath 2000 Backup Operation

Branch Offices

Power Switch with Light

Mgmt Router

Power Connector

NSTALLATION

Unpacking

Connecting for Configuration

Additional Requirements

Operation

2-4 NetPath 2000

ONFIGURATION

Status-Only Display

Configuration 3-3

Modify Configuration

Modify Configuration Screen

Wireless Network Interface

Router Interface

Local Management Interface

Configuration 3-7

Code Update

Restart Wireless

Reset Unit

Access Point Names (APNs)

PECIFICATIONS

A-2 NetPath 2000

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