Yealink SIP-T21 - Manual (Page 73)

Basic Call Features
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The SIP-T21P/SIP-T21 IP phone is designed to be easily used like a regular phone on a
public switched telephone network (PSTN). You can place calls, answer calls, transfer a
call to someone else, or conduct a conference call.
This chapter provides basic operating instructions for the SIP-T21P/SIP-T21 IP phone.
Topics include:

Placing Calls

Answering Calls

Ending Calls

Redialing Numbers

Recent Call In Dialing

Auto Answer

Auto Redial

Call Completion

Call Return

Call Mute

Call Hold/Resume

Do Not Disturb (DND)

Call Forward

Call Transfer

Call Waiting

Conference

Call Park

Call Pickup

Anonymous Call

Anonymous Call Rejection
If you require additional information or assistance with your new phone, contact your
system administrator.
You can place a call in three ways using your SIP-T21P/SIP-T21 IP phone:

Using the handset