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
1012
Time Zone
Time Zone Name
+5
Kazakhstan(Aqtobe), Kyrgyzstan(Bishkek), Pakistan(Islamabad),
Russia(Chelyabinsk)
+5:30
India(Calcutta)
+5:45
Nepal(Katmandu)
+6
Kazakhstan(Astana, Almaty), Russia(Novosibirsk,Omsk)
+6:30
Myanmar(Naypyitaw)
+7
Russia(Krasnoyarsk), Thailand(Bangkok)
+8
Australia(Perth), China(Beijing), Russia(Irkutsk, Ulan-Ude),
Singapore(Singapore)
+8:45
Eucla
+9
Japan(Tokyo), Korea(Seoul), Russia(Yakutsk,Chita)
+9:30
Australia(Adelaide), Australia(Darwin)
+10
Australia(Brisbane), Australia(Hobart),
Australia(Sydney,Melboume,Canberra), Russia(Vladivostok)
+10:30
Australia(Lord Howe Islands)
+11
New Caledonia(Noumea), Russia(Srednekolymsk Time)
+11:30
Norfolk Island
+12
New Zealand(Wellington,Auckland), Russia(Kamchatka Time)
+12:45
New Zealand(Chatham Islands)
+13
Tonga(Nukualofa)
+13:30
Chatham Islands
+14
Kiribati
Appendix C: Trusted Certificates
Yealink IP phones trust the following CAs by default:
 DigiCert High Assurance EV Root CA
 Deutsche Telekom AG Root CA-2
 Equifax Secure Certificate Authority
 Equifax Secure eBusiness CA-1
 Equifax Secure Global eBusiness CA-1
 GeoTrust Global CA
 GeoTrust Global CA2
 GeoTrust Primary CA
 GeoTrust Primary CA G2 ECC
 GeoTrust Universal CA
 GeoTrust Universal CA2
 Thawte Personal Freemail CA
 Thawte Premium Server CA

Yealink SIP-T21 E2 Specifications

General

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