Yealink SIP-T19 E2 T4 Series, Administrator'S Manual

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Configuring Security Features
817
3.
Select the desired value from the pull-down list of
RTP Encryption(SRTP)
.
4.
Click
Confirm
to accept the change.
Encrypting and Decrypting Files
Yealink IP phones support downloading encrypted files from the server and encrypting files
before/when uploading them to the server. You can encrypt the following files:

Configuration files
: MAC-Oriented CFG file (<MAC>.cfg), Common CFG file
(y0000000000xx.cfg), MAC-local CFG file (<MAC>-local.cfg) or other custom CFG files (for
example, sip.cfg, account.cfg)

Contact Files
: <MAC>-contact.xml
To encrypt/decrypt files, you may have to configure an AES key.
Configuration Parameters
Procedure
Configuration changes can be performed using the following methods.
Central
Provisioning
(Configuration
File)
<y0000000000xx
>.cfg
Configure whether to only download and resolve
the encrypted files.
Parameter:
static.auto_provision.update_file_mode