Yealink VC120, Administrator'S Manual

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Configuring Security Features
263
H.235
Yealink video conferencing systems support H.235 128-bit AES algorithm using the
Diffie-Hellman key exchange protocol in H.323 calls. To use H.235 feature for H.323 calls, the
participants in the call must enable the H.235 feature simultaneously. When a site places a call
on the H.235 feature enabled system, the system negotiates the encryption algorithm with the
destination system.
The H.235 parameter on the system is described below:
Parameter Description Configuration Method
H.235
Specifies the H.235 type. You can
configure it for the StarLeaf Cloud
platform or H.323 call separately.

Disabled
—do not use H.235 in
H.323 calls.

Optional
—negotiate with the
far site whether to use H.235 in
H.323 calls.

Compulsory
—compulsively
use H.235 in H.323 calls.
Default:
Disabled
Web User Interface
Rules of H.235 security in H.323 calls:
Far Near Compulsory Optional Disabled
Compulsory
H.235 Call H.235 Call Fail to establish call
Optional
H.235 Call H.235 Call RTP Call
Disabled
Fail to establish a call RTP Call RTP Call
When H.235 is enabled on both systems, calls will be encrypted, and the lock icon appears
on the display device of each system during a call.
To configure H.235 for StarLeaf Cloud platform via web user interface:
1.
Click on
Account->VC Platform
.
2.
Select
StarLeaf
from the pull-down list of
Platform Type
.