Yealink SIP-T21 E2 Administrator's Guide

Administrator’s Guide for SIP-T2 Series/T19(P) E2/T4 Series/T5 Series/CP860/CP920 IP Phones
xvi
 Auto Answer on page 385
 Do Not Disturb (DND) on page 409
 Call Forward on page 445
 Call Park on page 518
 Lightweight Directory Access Protocol (LDAP) on page 591
 Visual Alert and Audio Alert for BLF Pickup on page 611
 Busy Lamp Field (BLF) List on page 635
 Receiving RTP Stream on page 692
 Action URI on page 739
 Ring Tones on page 820
 Audio Codecs on page 854
 Jitter Buffer on page 884
 Transport Layer Security (TLS) on page 938
 Local Logging on page 964
 Syslog on page 972
Changes for Release 81, Guide Version 81.20
Major updates have occurred to the following sections:
 Wallpaper on page 182
 Screen Saver on page 191
Changes for Release 81, Guide Version 81.15
Documentations of the newly released SIP-T48S, SIP-T46S, SIP-T42S, SIP-T41S and SIP-T27G IP
phones have been added.
The following section is new for this version:
 Transparency on page 189
Major updates have occurred to the following sections:
 VPN on page 97
 Upgrading Firmware from the Provisioning Server on page 149
 Wallpaper on page 182
 Screen Saver on page 191
 Power Saving on page 199
 Backlight on page 203
 Account Registration on page 223
 Time and Date on page 248
 Language on page 267

Yealink SIP-T21 E2 Specifications

General

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