Yealink SIP-T23G Recovery Guide

Recovery Mode on Yealink IP phones
2
Phone Model
The Resource Files Required
Description
SIP-T27G
T27G.rom, T27G.bin, and T27G.rfs
Note: New factory phones
running V86 firmware version no
longer need “.bin” and “.rfs” files.
SIP-T29G
T29.rom, T29.bin, and T29.rfs
SIP-T33G
T33G.rom and T33G.bin
Note: New factory phones
running V86 firmware version no
longer need the “.bin” file.
SIP-T33P
T33P.rom and T33P.bin
SIP-T31P
T31P.rom and T31P.bin
SIP-T31G
T31G.rom and T31G.bin
SIP-T31
T31.rom and T31.bin
SIP-T30P
T30P.rom and T30P.bin
SIP-T30
T30.rom and T30.bin
SIP-T41P
T41.rom, T4X_SPI.bin, and T4X_SPI.rfs
SIP-T40G
T40G.rom, T40G.bin and T40G.rfs
SIP-T40P
T40.rom, T40.bin and T40.rfs
SIP-T42G
T42.rom, T4X.bin, and T4X.rfs
T42.rom, T42.bin, and T42.rfs (manufactured
before May 10
th
, 2013)
SIP-T46G
T46.rom, T46.bin, and T46.rfs
SIP-T48G
T48.rom, T48.bin, and T48.rfs
SIP-T42U
T42U.rom, T42U.bin, and T42U.rfs
Note: New factory phones
running V86 firmware version no
longer need these three files.
After entering the recovery mode,
the phone directly starts the
backup system.
SIP-T43U
T43U.rom, T43U.bin, and T43U.rfs
SIP-T46U
T46U.rom, T46U.bin, and T46U.rfs
SIP-T48U
T48U.rom, T48U.bin, and T48U.rfs
SIP-T41S
T41S.rom, T41S.bin, and T41S.rfs
Note: New factory phones
running V86 firmware version no
longer need “.bin” and “.rfs” files.
SIP-T42S
T42S.rom, T42S.bin, and T42S.rfs
SIP-T46S
T46S.rom, T46S.bin, and T46S.rfs
SIP-T48S
T48S.rom, T48S.bin, and T48S.rfs
SIP VP-T49G
T49.rom, T49.bin, and T49.rfs
VP59
VP59.rom, VP59.bin, VP59.rfs
Note: New factory phones
running V86 firmware version no
longer need these three files.
SIP-T57W
T57W.rom, T57W.bin, and T57W.rfs
SIP-T54W
T54W.rom, T54W.bin, and T54W.rfs

Yealink SIP-T23G Specifications

General

Backlight	Yes
Voice codecs	G.711a, G.722.2, G.726, G.729ab, iLBC
Volume control	Digital
Handset type	Wired handset
Product type	IP Phone
Product color	Black, Silver
Display resolution	132 x 64 pixels
Lines quantity	- lines
Phonebook capacity	1000 entries
Number of VoIP accounts	3
Networking standards	IEEE 802.1p, IEEE 802.1Q, IEEE 802.1x, IEEE 802.3af
Ethernet LAN (RJ-45) ports	2
AC adapter input voltage	100 - 240 V
AC adapter output current	0.6 A
AC adapter output voltage	5 V
Power consumption (typical)	1.56 W
Number of handles included	- pc(s)
Operating temperature (T-T)	-10 - 50 °C
Operating relative humidity (H-H)	10 - 95 %

Weight and Dimensions

Depth	188 mm
Width	209 mm
Height	150 mm