Yealink SIP-T20 - Manual (Page 73)

Basic Call Features
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To place a call on hold:
1. Press during a call.
The LCD screen indicates the call is on hold and the line LED flashes green.
Note
To resume a held call:
1. Press again.
Multiple Calls on Hold:
If multiple calls are placed on hold, do one of the following:
- Press or to switch between the calls, and then press to retrieve the
desired call.
- Press the corresponding line key to retrieve the desired call.
A numbered prompt appears on the LCD screen, for example ―1/3‖, indicating that this
is the first call out of three calls.
You can use DND to reject incoming calls automatically on the phone and the callers
can hear a busy signal or a message depending on your server.
You can enable/disable DND for the phone system, or you can customize DND for each
account. Two DND modes:

Phone (default): DND is effective for the phone system.

Custom: DND can be configured for each account.
You can receive incoming calls from authorized numbers when DND is enabled.
To configure the DND mode via web user interface:
1. Click on Features->Forward & DND.
The phone will beep softly every 30 seconds to remind you that you still have a call on
hold.
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