Yealink VC400 - H.235

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.