Yealink phones trust the following CAs by default:
l DigiCert High Assurance EV Root CA
l Deutsche Telekom Root CA 2
l Equifax Secure Certificate Authority
l Equifax Secure eBusiness CA-1
l Equifax Secure Global eBusiness CA-1
l GeoTrust Global CA
l GeoTrust Global CA2
l GeoTrust Primary Certification Authority
l GeoTrust Primary Certification Authority G2
l GeoTrust Universal CA
l GeoTrust Universal CA2
l Thawte Personal Freemail CA
l Thawte Premium Server CA
l Thawte Primary Root CA
l Thawte Primary Root CA - G2
l Thawte Primary Root CA - G3
l Thawte Server CA
l VeriSign Class 1 Public Primary Certification Authority
l VeriSign Class 1 Public Primary Certification Authority - G2
l VeriSign Class 1 Public Primary Certification Authority - G3
l VeriSign Class 2 Public Primary Certification Authority - G2
l VeriSign Class 2 Public Primary Certification Authority - G3
l VeriSign Class 3 Public Primary Certification Authority
l VeriSign Class 3 Public Primary Certification Authority - G2
l VeriSign Class 3 Public Primary Certification Authority - G3
l VeriSign Class 3 Public Primary Certification Authority - G4
l VeriSign Class 3 Public Primary Certification Authority - G5
l VeriSign Class 4 Public Primary Certification Authority - G2
l VeriSign Class 4 Public Primary Certification Authority - G3
l VeriSign Universal Root Certification Authority
l ISRG Root X1 (Let’s Encrypt Authority X1, Let’s Encrypt Authority X2, Let’s Encrypt Authority X3 and Let’s Encrypt
Authority X4 certificates are signed by the root certificate ISRG Root X1.)
l Baltimore CyberTrust Root
l DST Root CA X3
l Verizon Public SureServer CA G14-SHA2
l AddTrust External CA Root
l Go Daddy Class 2 Certification Authority
l Class 2 Primary CA
l Cybertrust Public SureServer SV CA
l DigiCert Assured ID Root G2
l DigiCert Assured ID Root G3
l DigiCert Assured ID Root CA
l DigiCert Global Root G2
l DigiCert Global Root G3
l DigiCert Global Root CA
l DigiCert Trusted Root G4
l Entrust Root Certification Authority
l Entrust Root Certification Authority - G2
l Entrust.net Certification Authority (2048)
l GeoTrust Primary Certification Authority - G3
l GlobalSign Root CA
l GlobalSign Root CA - R2
l Starfield Root Certificate Authority - G2
l TC TrustCenter Class 2 CA II
l TC TrustCenter Class 3 CA II
l TC TrustCenter Class 4 CA II
l TC TrustCenter Universal CA I
l TC TrustCenter Universal CA III
l Thawte Universal CA Root
l VeriSign Class 3 Secure Server CA - G2
l VeriSign Class 3 Secure Server CA – G3
l Thawte SSL CA
l StartCom Certification Authority
l StartCom Certification Authority G2
l Starfield Services Root Certificate Authority - G2
l RapidSSL CA
l Go Daddy Root Certificate Authority - G2
l Cybertrust Global Root
l COMODOSSLCA
l COMODO RSA Domain Validation Secure Server CA
l COMODO RSA Certification Authority
l AmazonRootCA4
l AmazonRootCA3
l AmazonRootCA2
l AmazonRootCA1
l Yealink Root CA
l Yealink Equipment Issuing CA
l SIP Core
l QuoVadis Root Certification Authority