Yealink VCM38 Administrator's Guide

| Configuring Network Settings | 80
Procedure
1. Do one of the following:
• On your web user interface, go to Network > LAN Configuration > IPv4/IPv6.
• On your VCS: go to More > Settings > Network Setting > Wired Network > IPv4/IPv6.
For VP59, tap > Settings > Network Setting > Wired Network > IPv4/IPv6.
•
On your CTP20/CTP18, tap > Settings > Network Setting > Host Network > Network > Wired
Network > IPv4/IPv6.
2. Configure and save the following settings:
Parameter Description Configuration Method
Static DNS
Enable or disable DNS feature.
Default: Off.
If you change this parameter, the
system will reboot to make the
change take effect.
Web user interface
Endpoint
CTP20/CTP18
Primary DNS/Pri.DNS
Configure the primary DNS
server assigned to the system.
If you change this parameter, the
system will reboot to make the
change take effect.
Web user interface
Endpoint
CTP20/CTP18
Secondary DNS/Sec.DNS
Configure the secondary DNS
server assigned to the system.
If you change this parameter, the
system will reboot to make the
change take effect.
Web user interface
Endpoint
CTP20/CTP18
Related information
Configuring IPv4 or IPv6
DHCP Options
The DHCP information with labels carries with the corresponding network and other control information.
The information is called option. After connected to the network, the device will broadcast the DISCOVER
request which carries the DHCP options of the network information. The DHCP server will replay the
corresponding option after receiving the request.
Note:
For more information on DHCP options, refer to RFC 2131 or RFC 2132.
• Supported DHCP Option of IPv4
• DHCP Option 42, Option 2
• DHCP Option 12
Supported DHCP Option of IPv4
The following table lists the DHCP options supported by Yealink VCS in IPv4 network.

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