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Yealink VC400 Administrator's Guide

Yealink VC400
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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.
Disableddo not use H.235 in
H.323 calls.
Optionalnegotiate with the
far site whether to use H.235 in
H.323 calls.
Compulsorycompulsively
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
Compulsory
H.235 Call
H.235 Call
Optional
H.235 Call
H.235 Call
Disabled
Fail to establish a 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.

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Yealink VC400 Specifications

General IconGeneral
Optical zoom18 x
White balanceAuto, Indoor, Outdoor
Focus adjustmentAuto
Video codecsH.264, H.264, H.263
Supported video modes1080p
Supported graphics resolutions352 x 288, 704 x 576, 1280 x 720 (HD 720), 1920 x 1080 (HD 1080)
Voice codecsG.711, G.711a, G.722
Line-inYes
USB 2.0 ports quantityUSB 2.0 ports have a data transmission speed of 480 Mbps, and are backwards compatible with USB 1.1 ports. You can connect all kinds of peripheral devices to them.
ITU-supported standardsH.323
Ethernet LAN data rates10, 100, 1000 Mbit/s
AC input voltage100-240 V
Power consumption (max)30 W
Weight and Dimensions IconWeight and Dimensions
Depth183 mm
Width330 mm
Height40 mm

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