Yealink SIP-T21 E2 Administrator's Guide

Table of Contents
xxiii
Logon Wizard ......................................................................................................................................................................... 716
Action URL ............................................................................................................................................................................... 720
Action URI ................................................................................................................................................................................ 739
Configuring Trusted IP Address for Action URI .............................................................................................. 744
Scenario A - Capturing the Current Screen of the Phone .......................................................................... 747
Scenario B - Placing a Call via Web User Interface ........................................................................................ 748
Server Redundancy............................................................................................................................................................... 749
Server Domain Name Resolution .......................................................................................................................... 763
Static DNS Cache................................................................................................................................................................... 767
Real-Time Transport Protocol (RTP) Ports .................................................................................................................. 775
TR-069 Device Management ............................................................................................................................................ 777
XML Browser ........................................................................................................................................................................... 783
Enhanced DSS Keys .............................................................................................................................................................. 790
Some Guidelines for Configuring Enhanced DSS Keys ................................................................................ 790
Understanding Macro Action Strings .................................................................................................................. 791
Configuring EDK Feature .......................................................................................................................................... 795
Configuring EDK List................................................................................................................................................... 797
Configuring EDK Prompt .......................................................................................................................................... 799
Configuring EDK Soft Keys ...................................................................................................................................... 801
Configuring a Custom Key ....................................................................................................................................... 809
Example Macros ........................................................................................................................................................... 817
Configuring Audio Features ...................................................... 819
Redial Tone .............................................................................................................................................................................. 819
Ring Tones ............................................................................................................................................................................... 820
Touch Tone .............................................................................................................................................................................. 826
Distinctive Ring Tones ......................................................................................................................................................... 827
Tones .......................................................................................................................................................................................... 834
Voice Mail Tone ..................................................................................................................................................................... 842
Ringer Device for Headset ................................................................................................................................................ 844
Handset/Headset/Speakerphone Mode ..................................................................................................................... 846
Headset Prior .......................................................................................................................................................................... 847
Dual Headset ........................................................................................................................................................................... 849
Sending Volume .................................................................................................................................................................... 851
Ringer Volume ........................................................................................................................................................................ 853
Audio Codecs .......................................................................................................................................................................... 854
Supported Audio Codecs ......................................................................................................................................... 854
Packetization Time (PTime) ..................................................................................................................................... 876
Acoustic Clarity Technology ............................................................................................................................................. 879
Acoustic Echo Cancellation (AEC) ......................................................................................................................... 879
Background Noise Suppression (BNS) ................................................................................................................ 880
Automatic Gain Control (AGC) ............................................................................................................................... 881
Voice Activity Detection (VAD) .............................................................................................................................. 881
Comfort Noise Generation (CNG) ......................................................................................................................... 882

Yealink SIP-T21 E2 Specifications

General

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