Yealink SIP-T40G Getting Started

Recovery Mode on Yealink IP phones
8
6. Press to verify the current firmware version after upgrading successfully.
Note
Using Recovery Mode on Yealink IP Phones
(TFTP Server)
This section introduces how to perform recovery mode using the TFTP server on Yealink IP phones step
by step.
For SIP Phone Series
This section is only applicable to SIP phone series including MP54, MP56, MP58, VP59, SIP-T58A, SIP
VP-T49G, SIP-T57W, SIP-T54W, SIP-T53W, SIP-T53, SIP-T19P, SIP-T19(P) E2, SIP-T21(P) E2,
SIP-T23P/G, SIP-T27G, SIP-T29G, SIP-T33P/G, SIP-T31P/T31G/T31, SIP-T30P/T30, SIP-T40P/G,
SIP-T41P/S, SIP-T42G/S, SIP-T46G/S, SIP-T48G/S, CP920 and CP860.
The following procedures take the SIP-T46G IP phone for reference.
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.
Note
2. Enter the desired values in the IP Address, Netmask, IP Gateway and TFTP Server fields
respectively.
For CP860 and CP920, you need to long press the specified soft key (the second from the left on
the phone) since there is no Speakerphone key. For CP920, press 1 to use the TFTP server.
For MP54, MP56, MP58, VP59, SIP-T58A/T57W/T54W/T53W/T53/T48U/T48S/T46U/T46S/T43U
/T42U/T42S/T41S IP phones, you need to press 1 on the recovery mode selection screen to use
TFTP server. For more information, refer to For MP54/MP56/MP58/VP59/SIP-T58A/T57W/T54W/
T53W/T53/T48U/T48S/T46U/T46S/T43U/T42U/T42S/T41S/CP920 IP Phones.
You need to tap Settings->Status (for SIP-T58A IP phones) or press (for SIP-T3 IP phones)
to verify the current firmware version since there is no key.

Yealink SIP-T40G Specifications

General

Mounting	Desk/Wall
Handset type	Wired handset
Product type	IP Phone
Product color	Black
Wall mountable	Yes
Wi-Fi	No
Security algorithms	AES, HTTPS, SSL/TLS
Networking standards	IEEE 802.3af
Ethernet LAN interface type	Gigabit Ethernet
Supported network protocols	FTP, TFTP, HTTP, HTTPS
Voice codecs	G.711, G.711a, G.711u, G.722, G.726, G.729ab
RJ-11 ports quantity	1
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)	1.6 W
Certification	CE, FCC, ISO 9001
Operating temperature (T-T)	-10 - 50 °C
Operating relative humidity (H-H)	10 - 90 %
Volume control	Digital
Display diagonal	2.3 \
Display resolution	132 x 64 pixels
Lines quantity	3 lines
Phonebook capacity	1000 entries
Number of VoIP accounts	3
Number of handles included	1 pc(s)

Weight and Dimensions

Depth	175 mm
Width	212 mm
Height	54 mm