Specifications

Administrator’s Guide for SIP-T2xP IP Phones
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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, “Upgrading Firmware” describes how to upgrade firmware of IP
phones.
 Chapter 8, “Resource Files” describes the resource files that can be downloaded
by IP phones.
 Chapter 9, “Troubleshooting” describes how to troubleshoot IP phones and
provides some common troubleshooting solutions.
 Chapter 10, “Appendix” provides the glossary, reference information about IP
phones compliant with RFC 3261, SIP call flows and the sample configuration files.
Summary of Changes
This section describes the changes to this guide for each release and guide version.
Changes for Release 71, Guide Version 71.140
Major updates have occurred to the following sections:
 Logo Customization on page 55
 Anonymous Call on page 76
 Distinctive Ring Tones on page 127
 Server Redundancy on page 163
 Transport Layer Security on page 207
 Secure Real-Time Transport Protocol on page 213
 Encrypting Configuration Files on page 215
 Local Contact File on page 227
 Viewing Log Files on page 231
 Capturing Packets on page 234
Changes for Release 71, Guide Version 71.125
Major updates have occurred to the following sections: