Yealink SIP-T38G Administrator's Guide

Configuring Basic Features
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ures.htm
To specify whether to use outbound proxy server in a dialog via web user interface:
1. Click on Phone->Features->General Information.
2. Select the desired value from the pull-down list of Use Outbound Proxy in Dialog.
3. Click Confirm to accept the change.
The IP phones support to configure SIP session timers T1, T2 and T4. These timers are SIP
transaction layer timers defined in RFC 3261. Timer T1 is an estimate of the Round Trip
Time (RTT) of transactions between a SIP client and SIP server. Timer T2 represents the
maximum retransmitting time of any SIP request message. The re-transmitting and
doubling of T1 continues until the retransmitting time reaches the T2 value. Timer T4
represents the time the network will take to clear messages between the SIP Client and
SIP Server.
Procedure
SIP session timer can be configured using the configuration files or locally.
Configuration File
<MAC>.cfg
Configure the SIP session timer
feature.
For more information, refer to SIP

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