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Error
Application error

32222: TLS version not allowed

Twilio Elastic SIP Trunking DocumentationSIP Trunking

Description

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The TLS version used by your SIP endpoints is lower than the one configured for your account. It's highly recommended to upgrade your SIP endpoints to use TLSv1.2. Otherwise, you can opt in to use deprecated TLS versions in the console. By default, only TLSv1.2 is allowed.

Possible causes

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SIP/TLS version is lower than the allowed

Upgrade TLS version or configure your account to allow all TLSv1+ in console (Voice → Settings → General → Allow Deprecated SIP/TLS versions)