Yealink VCM38 Administrator's Guide

| Configuring Account Settings | 95
Parameter Description Configuration Method
Outbound Proxy Server/
Outbound Server
Configure the IP address or
domain name of the outbound
proxy server for this SIP
account.
Note: only the outbound proxy
server is enabled do you need to
configure this parameter.
Web user interface
Endpoint
CTP20/CTP18
Outbound Port/Port
Configure the port of the
outbound proxy server.
Note: the default port number
is 5060. The value can be any
integer from 0 to 65535.
Web user interface
Endpoint
CTP20/CTP18
Transport
Specify the transport protocol for
transmitting the SIP signaling.
The supported protocols are as
follows:
• UDP—it provides the
best transmission for SIP
signaling.
• TCP—it provides a reliable
transmission for SIP
signaling.
• TLS—it provides a safe
transmission for SIP
signaling. TLS is available
only when the device is
registered on a SIP server
that supports TLS.
• DNS-NAPTR—the device
performs the DNS NAPTR
and SRV request to find the
service type and the port if no
server port is given.
Default: UDP.
Web user interface
Endpoint
CTP20/CTP18
Server Expires
The registration timeout (in
seconds) of the device.
After the timeout, the device will
send the registration request to
the SIP server again.
Default: 3600 seconds.
Web user interface
Endpoint
CTP20/CTP18
Note: If you want to use SIP Account to make private-to-public calls, you also need to enable
the static NAT settings or STUN feature for the SIP protocol.
Related tasks
Configuring STUN

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