Yealink SIP-T38G Administrator's Guide

Configuring Advanced Features
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2. Click Browse to locate the tar package from the local system.
3. Click Import to import the tar package.
4. Select the desired value from the pull-down list of VPN Active after importing.
5. Click Confirm to accept the change.
The web user interface pops up a dialog box to prompt that the settings will take
effect after reboot.
6. Click OK to reboot the IP phone.
To configure VPN via phone user interface after uploading the tar package:
1. Press Menu->Settings->Advanced Settings (password: admin) ->Network->VPN.
2. Press or , or the Switch soft key to select the desired value from the VPN
Active field.
3. Press the Save soft key to accept the change.
The IP phone reboots automatically to make the settings effective after a period of
time.
Quality of Service (QoS) is the ability to provide different priorities to different packets in
the network that allows the transport of traffic with special requirements. QoS
guarantees are important for applications that require fixed bit rate and are delay
sensitive, when the network capacity is insufficient. There are four major QoS factors to

Yealink SIP-T38G Specifications

General

Expansion module support	Yes
Ethernet LAN (RJ-45) ports	2
Keypad number of keys	48
Touchscreen	-
Display resolution	480 x 272 pixels
Display number of colors	16.78 million colors
Lines quantity	- lines
Phonebook capacity	1000 entries
Number of VoIP accounts	6
Voice codecs	G.711, G.722, G.723.1, G.726
Bluetooth	No
Security algorithms	802.1x RADIUS, HTTPS, SSL/TLS
AC adapter input voltage	100 - 240 V
AC adapter output voltage	5 V
Power consumption (typical)	4.6 W
Operating relative humidity (H-H)	10 - 95 %
Handset type	Wired handset
Product type	IP Phone
Product color	Black
Compliance industry standards	IEEE 802.3af
Number of handles included	1 pc(s)

Weight and Dimensions

Depth	204 mm
Width	273 mm
Height	42 mm
Weight	1050 g