Yealink SIP-T21 E2 Administrator's Guide

Configuring Basic Features
383
To configure call waiting and call waiting tone via phone user interface:
1. Press Menu->Features->Call Waiting.
2. Press or , or the Switch soft key to select the desired value from the Call
Waiting field.
3. Press or , or the Switch soft key to select the desired value from the Play Tone
field.
4. (Optional.) Enter the call waiting on code in the On Code field.
5. (Optional.) Enter the call waiting off code in the Off Code field.
6. Press the Save soft key to accept the change.
Auto Redial
Auto redial allows IP phones to redial a busy number after the first attempt. Both the number of
attempts and waiting time between redials are configurable.
Procedure
Auto redial can be configured using the following methods.
Central Provisioning
(Configuration File)
<y0000000000xx>.cfg
Configure auto redial feature.
Parameters:
auto_redial.enable
auto_redial.interval
auto_redial.times
Web User Interface
Configure auto redial feature.
Navigate to:
http://<phoneIPAddress>/servlet?p
=features-general&q=load
Phone User Interface
Configure auto redial feature.
Details of Configuration Parameters:
Parameters
Permitted Values
Default
auto_redial.enable
0 or 1
0
Description:
Enables or disables the IP phone to automatically redial the dialed number when the callee
is temporarily unavailable.
0-Disabled
1-Enabled

Yealink SIP-T21 E2 Specifications

General

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