Yealink SIP-T23P - Call Waiting

Basic Call Features
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You can enable or disable call waiting on the phone. If call waiting is enabled, you can
receive another call while there is already an active call on the phone. Otherwise,
another incoming call is automatically rejected by the phone with a busy message
when there is an active call on the phone. You can also enable or disable the phone to
play a warning tone when receiving another call.
To configure call waiting via phone user interface:
1. Press Menu->Features->Call Waiting.
2. Press or , or the Switch soft key to select Enabled from the Call Waiting
field.
3. Press or , or the Switch soft key to select Enabled from the Play Tone field.
4. (Optional.) Enter the call waiting on code or off code respectively in the On Code
or Off Code field.
5. Press the Save soft key to accept the change or the Back soft key to cancel.
Call waiting is configurable via web user interface at the path Features->General
Information.
You can create a conference with other two parties using the phone’s local conference.
You can create a conference between an active call and a call on hold by pressing the
Conf soft key. The SIP-T23P/G IP phone also supports network conference.
Note
The SIP-T23P/G IP phone supports up to 3 parties (including yourself) in a conference call.
This is the default method of conference called Local Conference.
Network conference is not available on all servers. For more information, contact your
system administrator.