Yealink SIP-T19 - Manual (Page 113)

Troubleshooting
103
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Check that the headset volume is adjusted to an appropriate level. Refer to Volume
on page 27 .
What is the difference between user name, register name and display name?
Both user name and register name are defined by the server. A user name is used to
identify the account while a register name matched with a password is used for
authentication if the server requires. Display name is the caller ID that will be displayed
on the callee’s LCD screen. Server configurations may override local configurations.
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. Play hold
tone is enabled by default. Play hold tone and play hold tone delay are configurable
via web user interface only.
To configure play hold tone and play hold tone delay via web user interface:
1. Click on Features->General Information.
2. Select the desired value from the pull-down list of Play Hold Tone.
3. Enter the desired time (in seconds) in the Play Hold Tone Delay field.
4. Click Confirm to accept the change.