To remove that default trust a file can be used with, use the IP Office Trusted Certificate Store delete feature:
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Create a text file with an extension '.pem', open and copy the above PEM data including the 'BEGIN CERTIFICATE' and 'END CERTIFICATE' lines. The line termination can be Windows or Linux.
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One .pem, file per certificate
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Using the IP Office or IP Office Web Manager File Manager feature, copy the file to the system/primary/certificates/tcs/delete directory
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Restart IP Office
To add a default trusted certificate, the above steps can be followed, but copy the file to the system/primary/certificates/tcs/add directory
The default certificate feature also supports the binary DER format; see
Certificates and Trust for more information on certificate file formats.
