Yealink SIP-T38G Administrator's Guide

Troubleshooting
215
Call-ID: 1234@<srchost>
Event: check-sync;reboot=true
The picture the IP phone can recognize has some special requirements. It is not easy for
the IP phone to resolve a popular picture format such as BMP and JPG. To make it easy,
we enable only DOB file. There is a tool for you to convert a BMP file to DOB. For more
information, refer to the document ―Yealink Auto Provisioning User Guide‖.
A factory reset can restore the original password. Please try to long press the OK key
when the IP phone is idle, which should lead you to make a factory reset.
The volumes in different cases are separated. Anytime you want to increase or reduce
the voice you are hearing, just use the volume button under the navigation keys. When
in idle, it tunes the ringer volume. In talking, it tunes the receiving volume. In dialing
mode, it tunes the volume for dial tone. When you are using speaker, it tunes for speaker
and when you are using headset, it tunes for headset.
The ones manufactured before last third of January 2010 will use the power adapter
preferentially, while the after use PoE preferentially.
It is a term referring to the update of the IP phones, including updates on most of the
configuration parameters, local phonebook, firmware and so on. You can make auto
provisioning on a single phone, while it makes more sense in mass updates.
Plug and Play (PnP) is a method for IP phones to get the provisioning server address. If

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