Yealink SIP-T42G User Manual

Also see for Yealink SIP-T42G: Developer's guide Administrator's guide Manual Auto provisioning guide Getting started

Yealink SIP-T42G User Manual Manual pdf 55 page image

User Guide for SIP-T42G IP Phone55TroubleshootingThis chapter provides general troubleshooting information to help you solve the problems you might encounterwhen using your SIP-T42G IP phone.General IssuesHow can I find the basic information of the IP phone?Press the OK key when the IP phone is idle to check the basic information of the IP phone, such as IP addressand firmware version.How to obtain the MAC address of a phone when the phone is not powered on?Three ways to obtain the MAC address of a phone:You can ask your supplier for the shipping information sheet which includes MAC addresses according to thecorresponding PO (Purchase Order).• You can find the MAC address on the label of carton box.• You can also find the MAC address from the phone’s bar code on the back of the phone.Display IssuesWhy is the LCD screen blank?• Ensure that the phone is properly plugged into a functional AC outlet.• Ensure that the phone is plugged into a socket controlled by a switch that is on.• If the phone is plugged into a power strip, try to plug it directly into a wall outlet instead.• If the phone is powered from PoE, ensure that you use a PoE-compliant switch or hub.Why does the phone display “Network unavailable”?• Ensure that the Ethernet cable is plugged into the Internet port on the phone and the Ethernet cable isnot loose.• Ensure that the switch or hub in your network is operational.• Contact your system administrator for more information.