Yealink SIP-T4X Administration Manual page 9

Administrator's Guide for SIP-T4X IP Phones
Major updates have occurred to the following sections:
SIP IP Phone Models

Configuring Transmission Methods of the Internet Port and PC Port

Language

Remote Phone Book

Server Redundancy

Audio Codecs

Transport Layer Security

Secure Real-Time Transport Protocol

This version is updated to incorporate T42G as one of the T4X device models. The
following section is new for this version:
SIP IP Phone Models

Major updates have occurred to the following sections:
Reading Icons

PPPoE on page

Backlight

Language

Call Completion

TR-069 Device Management

IPv6 Support

Audio Codecs

Upgrading Firmware

Configuring DSS Key

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