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The prerequisite for this is that online licensing is used, see Online Licensing
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Certified SIP phones (Yealink) support the TLS certificate from Let's Encrypt and do not require additional TLS configuration.
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When selecting this option, note that you must be in charge of your own DNS zone and the public IP address of your network must be resolved by a unique registered FQDN.
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Certified SIP phones (Yealink) support TLS certificates from recognized certificate authorities (CA): https://support.yealink.com/en/portal/docDetail?documentCode=90ef402d65392bc5
If you use a certificate from the listed certificate authority, no additional TLS configuration is required on Yealink devices. |
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If your TLS certificate is not supported by Yealink, you need to install the corresponding root certificate on each SIP phone, see Install TLS root certificate on Certified SIP phones
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