Troubleshooting355Why Is there a specific format in configuring IPv6 on Yealink Skype forBusiness phones?Scenario 1:If the Skype for Business phone obtains the IPv6 address, the format of the URL to access theweb user interface is “[IPv6 address]” or “http(s)://[IPv6 address]”. For example, if the IPv6address of your phone is “fe80::204:13ff:fe30:10e”, you can enter the URL (e.g.,“[fe80::204:13ff:fe30:10e]” or “http(s)://[fe80::204:13ff:fe30:10e])” in the address bar of a webbrowser on your PC to access the web user interface.Scenario 2:Yealink Skype for Business phones support using FTP, TFTP, HTTP and HTTPS protocols todownload configuration files or resource files. You can use one of these protocols forprovisioning.When provisioning your Skype for Business phone obtaining an IPv6 address, the provisioningserver should support IPv6 and the format of the access URL of the provisioning server can be“tftp://[IPv6 address or domain name]”. For example, if the provisioning server address is“2001:250:1801::1”, the access URL of the provisioning server can be “tftp://[2001:250:1801::1]/”.For more information on provisioning, refer toYealink_Skype_for_Business_HD_IP_Phones_Auto_Provisioning_Guide.Audio IssuesHow to increase or decrease the volume?Press the volume key to increase or decrease the ringer volume when the Skype for Businessphone is idle or ringing, or to adjust the volume of engaged audio device (handset,speakerphone or headset) when there is an active call in progress.Why do I get poor sound quality during a call?If you have poor sound quality/acoustics like intermittent voice, low volume, echo or othernoises, the possible reasons could be: Users are seated too far out of recommended microphone range and sound faint, or areseated too close to sensitive microphones and cause echo. Intermittent voice is mainly caused by packet loss, due to network congestion, and jitter,due to message recombination of transmission or receiving equipment (e.g., timeouthandling, retransmission mechanism, buffer under run). Noisy equipment, such as a PC or a fan, may cause voice interference. Turn off any noisyequipment. Line issues can also cause this problem; disconnect the old line and redial the call to ensureanother line may provide better connection.
