Yealink SIP-T27P [6/841] Summary of changes

Administrator’s Guide for SIP-T2 Series/T19(P) E2/T4 Series IP Phones

 Chapter 3, “Configuring Basic Features” describes how to configure the basic

features on IP phones.

 Chapter 4, “Configuring Advanced Features” describes how to configure the

advanced features on IP phones.

 Chapter 5, “Configuring Audio Features” describes how to configure the audio

features on IP phones.

 Chapter 6, “Configuring Security Features” describes how to configure the security

features on IP phones.

 Chapter 7, “Troubleshooting” describes how to troubleshoot IP phones and

provides some common troubleshooting solutions.

 Chapter 8, “Appendix” provides the glossary, reference information about IP

phones compliant with RFC 3261, SIP call flows and the sample configuration files.

This section describes the changes to this guide for each release and guide version.

Documentations of the newly released SIP-T19(P) E2 IP phones have also been added.

The following sections are new for this version:

 Ringing Timeout on page 381

 Shared Call Appearance (SCA) on page 450

 Bridge Lines Appearance (BLA) on page 462

 Short Message Service (SMS) on page 471

 Appendix F: Configurations Defined Never be Saved to <MAC>-local.cfg file on

page 768

Major updates have occurred to the following sections:

 Documentations on page v

 Expansion Module on page 14

 Reading Icons on page 30

 Configuration Files on page 38

 Obtaining Configuration Files and Resource Files on page 42

 Account Registration on page 112

 Auto Answer on page 232

 IP Direct Auto Answer on page 237

 Do Not Disturb (DND) on page 251