Yealink T40G Administrator's Guide

Administrator’s Guide for SIP-T2 Series/T4 Series/T5 Series IP Phones
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Note
Resetting the IP phone to factory defaults will delete custom certificates by default. However, this feature is
configurable by the parameter “static.phone_setting.reserve_certs_enable” using the configuration file.
Resetting the IP phone to factory defaults will delete trusted and server certificates settings by default.
However, this feature is configurable by the parameter “phone_setting.reserve_certs_config.enable” using
the configuration file.
Topic
Supported Trusted Certificates
Supported Trusted Certificates
Yealink IP phones trust the following CAs by default:
 DigiCert High Assurance EV Root CA
 Deutsche Telekom 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 Certification Authority
 GeoTrust Primary Certification Authority G2
 GeoTrust Universal CA
 GeoTrust Universal CA2
 Thawte Personal Freemail CA
 Thawte Premium Server CA
 Thawte Primary Root CA
 Thawte Primary Root CA - G2
 Thawte Primary Root CA - G3
 Thawte Server CA
 VeriSign Class 1 Public Primary Certification Authority
 VeriSign Class 1 Public Primary Certification Authority - G2
 VeriSign Class 1 Public Primary Certification Authority - G3
 VeriSign Class 2 Public Primary Certification Authority - G2
 VeriSign Class 2 Public Primary Certification Authority - G3
 VeriSign Class 3 Public Primary Certification Authority
 VeriSign Class 3 Public Primary Certification Authority - G2

Yealink T40G Specifications

General

SIP Accounts	3
Wall Mountable	Yes
Opus Codec	No
Display	2.3 inch 132x64-pixel graphical LCD
Network	Dual-port Gigabit Ethernet
PoE	Yes
Headset Support	Yes, RJ9 port
Power Adapter	Optional
Voice Codecs	G.722, G.711(A/μ), G.729AB, G.726
Local Phonebook	1000 entries