Yealink SIP-T31G Getting Started

Recovery Mode on Yealink IP phones
6
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-T42U, SIP-T43U, SIP-T46U, SIP-T48U,
SIP-T57W, SIP-T54W, SIP-T53W, SIP-T53, SIP-T53C, and VP59.
This feature can only be supported on new factory phones running firmware version 86 or later.
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.
2. Press 1 to run the backup system.
Using Recovery Mode on Yealink IP Phones
(HTTP Server)
This section introduces how to perform recovery mode using the HTTP server on Yealink IP phones step
by step.
For SIP Phone Series
This section is only applicable to SIP phone series including SIP-T27G, SIP-T30, SIP-T30P, SIP-T31,
SIP-T31P, SIP-T31G, SIP-T33P, SIP-T33G, SIP-T41S, SIP-T42S, SIP-T46S, SIP-T48S, SIP-T58A,
CP960, and CP920.
This feature can only be supported on new factory phones running firmware version 86 or later.
Procedures

Yealink SIP-T31G Specifications

General

Mounting kit	Yes
Number of handles included	1 pc(s)
Display diagonal	2.3 \
Display resolution	132 x 64 pixels
Operating temperature (T-T)	-10 - 50 °C
Operating relative humidity (H-H)	10 - 95 %
Voice codecs	G.722, G.729, AGC, G.729A, AJB, PLC, G.711Mu, VAD, G.711a, G.723.1, G.726, iLBC, CNG, OPUS
AC adapter input voltage	100 - 240 V
AC adapter output current	0.6 A
AC adapter output voltage	5 V
Power consumption (typical)	3 W
Lines quantity	2 lines
Phonebook capacity	1000 entries
Number of VoIP accounts	2
Sustainability certificates	RoHS, REACH
Networking standards	IEEE 802.3af, IEEE 802.1p, IEEE 802.1Q, IEEE 802.1x
Ethernet LAN data rates	10, 100, 1000 Mbit/s
Ethernet LAN interface type	Gigabit Ethernet
Mounting	Desk/Wall
Handset type	Wired handset
Product type	IP Phone
Product color	Gray
Harmonized System (HS) code	85171800

Weight and Dimensions

Depth	189 mm
Width	188 mm
Height	162 mm
Package depth	210 mm
Package width	213 mm
Package height	103 mm