Yealink SIP-T38G Administrator's Guide

Configuring Advanced Features
121
This chapter provides information for making configuration changes for the following
advanced features:
 Distinctive Ring Tones
 Tones
 Remote Phonebook
 LDAP
 Busy Lamp Field
 BLF List
 Shared Call Appearance
 As-Feature-Event
 Automatic Call Distribution
 Message Waiting Indicator
 Call Recording
 Hot Desking
 Action URL
 Action URI
 Server Redundancy
 LLDP
 VLAN
 VPN
 Quality of Service
 Network Address Translation
 802.1X Authentication
The Distinctive Ring Tones feature allows specific incoming calls to trigger the IP phone
to play distinctive ring tones. The IP phone inspects the "Alert-Info" header in the INVITE
request when receiving an incoming call. If the INVITE request contains an "Alert-Info"
header, the IP phone strips out the URL and keyword parameter and maps it to the
appropriate ring tone. The followings are two examples of "Alert-Info" headers and the
italicized text is a placeholder for the actual value:

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