Aastra Telecom MBU 400TM manual Issue Causes Solutions, Sound quality is, Poor

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Troubleshooting

Issue

Causes

Solutions

 

4)

The router

4) a) Use port forwarding.

 

 

blocks Internet

 

The default SIP port is

 

 

telephony.

 

5060, and the default

 

 

 

 

RTP port is 5004.

 

 

 

 

Ensure that your router

 

 

 

 

always assigns the

 

 

 

 

same IP address to your

 

 

 

 

phone when using port

 

 

 

 

forwarding­. For more

 

 

 

 

information, check your

 

 

 

 

router’s manual.

 

5)

The router

5) Check your router’s user

 

 

firmware needs

 

manual to see how to

 

 

updating.

 

update the firmware.

When I make

1)

There is too much

1)

a) Reduce the amount

Internet calls, the

 

simultaneous

 

of traffic on your

sound quality is

 

data traffic on

 

broadband connection.

poor.

 

your broadband

 

b) Sign up for a Quality

 

 

connection.

 

of Service agreement

 

 

 

 

with your broadband

 

 

 

 

provider.

 

 

 

 

c) Order a connection

 

 

 

 

with higher speed

 

 

 

 

from your broadband

 

2)

 

2)

provider.

 

Your Internet

Contact your Internet

 

 

Telephony

 

Telephony Service

 

 

Service

 

Provider regarding

 

 

Provider’s

 

ensured voice

 

 

Quality of

 

prioritization across the

 

 

Service is based

 

network.

 

 

on a “best

 

 

efforts” rather than a guaranteed voice priority method.

32 MBU 400 Installation Guide

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Contents MBU 400TM Page Importantes mesures de sécurité Important Safety InstructionsMBU 400 Installation Guide ===============================================Page Software License Agreement FCC Information US Service Center This equipment uses the following Usoc jacks RJ11CPas Viii MBU 400 Installation GuideConsumer Information Applicable for Coin or Pay Phone Only FCC if you believe it is necessaryImportant Battery Information Safety InformationImportant Safety Information For countries in the European Union Sensitive Electronic EnvironmentProduct Disposal Information For countries outside the European Union Battery Disposal InformationXii MBU 400 Installation Guide United States Regulatory InformationEurope Xiv MBU 400 Installation Guide CanadaExposure to Radio Frequency RF Signals Page Table of Contents Xviii MBU 400 Installation Guide Optional MBU and Handset TasksCongratulations Thank you for choosing Aastra Telecom’s MBUAbout This Guide DocumentationMBU 400 provides the following features MBU 400 FeaturesMBU Features Type of Service ToSAastra 420d Handset Features Audio FeaturesRequirements What’s in the MBU 400 Box? 420d Swivel Belt Clip 420d HandsetMBU 400 Hardware Aastra 420d Handset Front ViewAastra 420d Handset Side View Aastra 420d Handset Side ViewAastra 420d Handset Charger Front View Aastra 420d Handset Charger Rear ViewMBU Top View MBU Rear ViewTo install the MBU 400 on a desktop Installing the MBUInstalling on a Desktop Installing on a Wall To install the MBU on a wallInstallation sur un mur Pour installer le MBU sur un murConnecting the MBU Net LED Power LED Installing and Registering the Handset Installing the MBU Page Manually Registering/De-registering a Handset Resetting the MBUOptional MBU and Handset Tasks Registering Additional Handsets with the MBU Factory Defaulting the MBUTo factory default the MBU To register additional handsetsViewing the MBU 400 IP Address and Status Information To view the IP address and status of the MBUAccessing the MBU 400 Web UI To access the MBU 400 Web UIAccessing the MBU 400 Web UI Using the MBU Handset Idle ScreenIdle Mode Options Handset Main Menu Main MenuUsing the MBU Locking/Unlocking the Keypad Using the Volume ControlUsing the Speakerphone Troubleshooting Internet settings Issue Causes Solutions PowerIndicator on When I makeYou are Issue Causes Solutions Cannot receiveCountry Check that you have Information, contactPoor Issue Causes SolutionsSound quality is Yesterday Issue Causes Solutions Cannot makeBut it worked Page MBU 400 Installation Guide Index-1 IndexIndex Page Aastra Telecom Inc 41-001271-00 Rev