Yealink VCM38 Administrator's Guide

| Configuring the Security Features | 247
Configuring SRTP
You can set SRTP for the SIP protocol when using a SIP account, SIP IP call, or logging in to Zoom, Pexip,
BlueJeans, or a custom third-party platform.
About this task
the third generation VCS devices running in Yealink Cloud system mode Do not support using SIP
accounts or logging into Zoom, Pexip, BlueJeans or other customized third-party platforms.
Procedure
1. Do one of the following:
• On your web user interface, go to Account > VC Platform > Platform Type > Zoom/Pexip/
BlueJeans/Custom.
• On your web user interface, go to Account > SIP Account/SIP IP Call.
2. Configure and save the following settings:
Parameter Description Configuration Method
SRTP
Specify the SRTP type.
The supported types are as
follows:
• Disabled—the SRTP feature
is disabled in the SIP call.
• Optional—the call parties
in a SIP call will negotiate
whether to use the SRTP
feature or not.
• Compulsory—the
SRTP feature is enabled
compulsorily in the SIP call.
Default: Disabled.
Web user interface
During the SIP call, call parties can see the encrypted icon displayed in their screens.
H.235 Encryption
H.235 system provides the identity authentication, the data encryption, and the integration. H.235 encrypts
the RTP during H.323 calls to avoid interception and eavesdropping.
The H.235 is supported by the systems. The parties participating in the call must enable H.235 feature
simultaneously. When this feature is enabled on both sites, the encryption type used in the session is
negotiated between the systems. The StarLeaf platform also supports H.235 encryption. After logging in to
the StarLeaf platform, you can use H.235 encryption.
Rules of H.235 security in H.323 calls are described as below:
Remote\Local Compulsory Optional Disabled
Compulsory H.235 Call H.235 Call Fail to establish a call
Optional H.235 Call H.235 Call RTP Call
Disabled Fail to establish a call RTP Call RTP Call
• Configuring H.235 Encryption

Yealink VCM38 Specifications

General

Type	Conference microphone
Noise reduction	Yes
Microphone frequency	100 - 16000 Hz
Microphone sensitivity	-45 dB
Microphone pick-up range	6 m
Number of microphone arrays	8
Maximum sound pressure level (1kHz)	100 dB
Device interface	RJ-45
Connectivity technology	Wired
Maximum operating distance	40 m
Mounting type	Ceiling
Product color	Silver
Operating temperature (T-T)	0 - 40 °C
Operating relative humidity (H-H)	5 - 90 %
Number of products included	1 pc(s)
Harmonized System (HS) code	85181000
Power source	DC/PoE
Sustainability certificates	CE, Federal Communications Commission (FCC), REACH, RoHS

Weight and Dimensions

Width	127.3 mm
Height	66.3 mm