Yealink SIP-T27G Recovery Guide

Recovery Mode on Yealink IP phones
6
Note
After successfully connecting the USB flash drive, LCD screen prompts “USB device has been
connected successfully!”.
Using Recovery Mode and Runing Backup
System on Yealink IP Phones
This section introduces how to enter recovery mode and run the backup system on Yealink IP phones
step by step.
For Dual System Devices
This section is only applicable to SIP phone series including SIP-T58W, SIP-T42U, SIP-T43U, SIP-T46U,
SIP-T48U, SIP-T57W, SIP-T54W, SIP-T53W, SIP-T53, SIP-T53C, CP965, CP925, and VP59.
Procedures
1. Long press (Speakerphone key) and reconnect the power adapter to trigger the recovery
mode. Do not release until the recovery mode wizard appears on the phone LCD screen.
On the CP960 IP phone, you can only connect to the USB port next to the micro USB port to use
the recovery mode.

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