Yealink SIP-T27G Recovery Guide

Recovery Mode on Yealink IP phones
11
5. Press to verify the current firmware version after upgrading successfully.
Note
For VCS (Video Conferencing System) Series
The section is only applicable to the VCS series including VC400, VC120, and VC110.
The following procedures take the VC400/VC120 for reference.
Procedures
1. Long press the recessed Reset key (Use the tip of a pin to hold the reset key) and press on the
codec to trigger the recovery mode. Do not release the Reset key until the recovery mode wizard
appears on the display device.
Note
2. Enter the desired values in the IP Address, Netmask, IP Gateway and TFTP Server fields
respectively.
The IP phone must be configured in the same subnet as the TFTP server.
3. Press on the remote control to complete the recovery mode.
The video conferencing system will download and upgrade the firmware from the TFTP server. After
upgrading, the video conferencing system will initialize successfully and get ready for use.
4. Press on the VCP40 phone to verify the current firmware version after upgrading successfully.
You need to press (for SIP-T19(P) E2 IP phones), tap ->Status (for SIP VP-T49G IP
phones), tap Settings->Status (for VP59/SIP-T58A IP phones) or tap Menu->Status (for
SIP-T57W IP phones), (for SIP-T3 IP phones) to verify the current firmware version since
there is no key.
For VC110, you need to long press the Reset key and reconnect the power adapter to trigger the
recovery mode.
IP Address:
Netmask:
IP Gateway:
TFTP Server:
10. 2. 11.124
255.255.255. 0
10. 2. 11.254
10. 2. 11.123
…. Update Fail ….
Please reboot
Welcome

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