The IP Office system can use security certificates to validate the connections between itself, applications and other IP Office systems. Certificates can also be used for IP telephony communications.
Certificates can be placed onto the System SD card. Those certificates are then loaded into the system's certificate store when the system is started. The certificate file name extension must indicate the type of encoding; PEM encoded files should end with .pem, DER encoded files should end with .der.
1.Using a card reader, copy the file into the /system/primary/certificates/tcs/add folder on the System SD memory card.
The mechanism above can adapted to also remove an existing certificate.
1.Using a card reader, copy the file into the /system/primary/certificates/tcs/remove folder on the System SD memory card. If the matching certificate already exists in the system certificate store, that certificate is removed.