Yealink SIP-T21 E2 Administrator's Guide

Administrator’s Guide for SIP-T2 Series/T19(P) E2/T4 Series/T5 Series/CP860/CP920 IP Phones
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The new incoming call is presented to the user visually on the LCD screen.
Call waiting tone allows the IP phone to play a short tone, to remind the user audibly of a new
incoming call during conversation. Call waiting tone works only if call waiting is enabled. You
can customize call waiting tone or select specialized tone sets (vary from country to country)
for your IP phone. For more information, refer to Tones on page 834.
The call waiting on code and call waiting off code configured on IP phones are used to
activate/deactivate the server-side call waiting feature. They may vary on different servers.
Procedure
Call waiting and call waiting tone can be configured using the following methods.
Central Provisioning
(Configuration File)
<y0000000000xx>.cfg
Configure call waiting and call
waiting tone.
Parameters:
call_waiting.enable
call_waiting.tone
call_waiting.on_code
call_waiting.off_code
Web User Interface
Configure call waiting.
Navigate to:
http://<phoneIPAddress>/servlet?p
=features-general&q=load
Configure call waiting tone.
Navigate to:
http://<phoneIPAddress>/servlet?p
=features-audio&q=load
Phone User Interface
Configure call waiting and call
waiting tone.
Details of Configuration Parameters:
Parameters
Permitted Values
Default
call_waiting.enable
0 or 1
1
Description:
Enables or disables call waiting feature.
0-Disabled
1-Enabled
If it is set to 0 (Disabled), a new incoming call is automatically rejected by the IP phone with

Yealink SIP-T21 E2 Specifications

General

Brand	Yealink
Model	SIP-T21 E2
Category	IP Phone
Language	English