Yealink T48S Skype For Business Edition User Manual page 244

User Guide for the T48S Skype for Business phone
isolate the problem.
Why doesn't the phone ring?
Check the ringer volume on the phone. To adjust the ringer volume setting, press the Volume
key when the phone is on-hook and idle. For more information, refer to
Why can't I receive calls?
Check that whether your status is DND mode, if it is, you should reset status. Refer to

Presence Status
Check that whether call forward is disabled on the phone. Refer to

115.
Why doesn't my handset work?
Check that the headset cord is fully connected to the headset jack on the phone. Refer to

Phone Initialization
Check that the headset volume is adjusted to an appropriate level. Refer to

page 79.
Why does the phone play a tone when there is a call on hold? How to disable it?
When there is a call on hold, the phone will play a hold tone every 30 seconds. Hold tone and
the interval of playing a hold tone are configurable via web user interface only.
To configure play hold tone and play hold tone delay via web user interface:
Click on Features->General Information.
1.
Select the desired value from the pull-down list of Play Hold Tone.
2.
242
on page38.
on page 25.
Volume on page 79.
Call Forward on page
Volume on