Yealink SIP-T27G Administrator's Guide

Administrator’s Guide for SIP-T2 Series/T4 Series/T5 Series/CP920 IP Phones
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Verifying the firmware version
Press the OK/√key or select Menu > Status when the phone is idle to check the firmware version. For example
28.82.0.20.
Item Description
1 28
Firmware ID.
The firmware ID for each IP phone model is:
l 97: T57W
l 96: T54W
l 95: T53W/T53
l 108: T48U/T46U/T43U
l 116: T42U
l 35: T48G
l 28: T46G
l 66: T48S/T46S/T42S/T41S
l 29: T42G
l 36: T41P
l 54: T40P
l 76: T40G
l 46: T29G
l 69: T27G
l 44: T23P/G
l 52: T21(P) E2
l 53: T19(P) E2
l 78: CP920
2 82
Major version.
Note: The larger it is, the newer the major version is.
3 0 A fixed number.
4 20
Minor version.
Note: With the same major version, the larger it is, the newer the minor version is.
The IP phone does not update the configurations
Do one of the following:
l Ensure that the configuration is set correctly.
l Reboot the phone. Some configurations require a reboot to take effect.

Yealink SIP-T27G Specifications

General

Mounting	Desk/Wall
Handset type	Wired handset
Product type	IP Phone
Product color	Black, Gold
Wall mountable	Yes
Display diagonal	3.66 \
Display resolution	240 x 120 pixels
RJ-9 ports quantity	2
USB 2.0 ports quantity	1
Voice codecs	CNG, G.711, G.722, G.723.1, G.726, G.729, G.729ab, VAD, iLBC
Dual-Tone Multi-Frequency (DTMF) modes	SIP info
Lines quantity	8 lines
Phonebook capacity	1000 entries
Number of VoIP accounts	6
Bluetooth	-
Security algorithms	AES, MD5
Networking standards	IEEE 802.1Q, IEEE 802.1p, IEEE 802.1x, IEEE 802.3af
Ethernet LAN interface type	Gigabit Ethernet
Volume control	Digital
Operating temperature (T-T)	-10 - 50 °C
Operating relative humidity (H-H)	10 - 95 %
Cables included	LAN (RJ-45)
Number of handles included	1 pc(s)
Harmonized System (HS) code	85171800

Weight and Dimensions

Depth	210 mm
Width	265 mm
Height	170.5 mm