Yealink SIP-T2 SERIES Administrator's Manual page 938

Administrator's Guide for SIP-T2 Series/T19(P) E2/T4 Series/CP860 IP Phones
Procedure
Decryption method can be configured using the configuration files.
Configuration File
Local
Details of Configuration Parameters:
auto_provision.aes_key_in_file
Description:
Enables or disables the IP phone to decrypt configuration files using the encrypted AES keys.
0-Disabled
1-Enabled
If it is set to 1 (Enabled), the IP phone will download <y0000000000xx_Security>.enc and
<MAC_Security>.enc files during auto provisioning, and then decrypts these files into the
plaintext keys (e.g., key2, key3) respectively using the phone built-in key (e.g., key1). The IP
phone then decrypts the encrypted configuration files using corresponding key (e.g., key2,
key3).
If it is set to 0 (Disabled), the IP phone will decrypt the encrypted configuration files using
914
<y0000000000xx>.cfg
Web User Interface
Phone User Interface
Parameters
Configure the decryption method.
Parameter:
auto_provision.aes_key_in_file
Configure AES keys.
Parameters:
auto_provision.aes_key_16.com
auto_provision.aes_key_16.mac
Configure AES keys.
Navigate to:
For
SIP-T48G/T46G/T42G/T41P/T40P/T29
G/T27P/T23P/T23G/T21(P) E2/T19(P)
E2/CP860:
http://<phoneIPAddress>/servlet?p=s
ettings-autop&q=load
For SIP VP-T49G:
http://<phoneIPAddress>/servlet?m=
mod_data&p=settings-autop&q=load
Configure AES keys.
Permitted Values
0 or 1
Default
0