Yealink SIP-T40G Administrator's Guide

Account Settings
302
Values 1-Successive registration
Default
0
Parameter
account.X.fallback.timeout
[1]
<MAC>.cfg
Description
It configures the time interval (in seconds) for the phone to detect whether the working server is avail-
able by sending the registration request after the fallback server takes over call control.
Note: It is not applicable to outbound proxy servers.
Permitted
Values
Integer from 10 to 2147483647
Default
120
Parameter
account.X.outbound_proxy_fallback_interval
[1]
<MAC>.cfg
Description
It configures the time interval (in seconds) for the phone to detect whether the working outbound proxy
server is available by sending the registration request after the fallback server takes over call control.
Note: It is only applicable to outbound proxy servers.
Permitted
Values
Integer from 0 to 65535
Default
3600
Web UI
Account > Register > Proxy Fallback Interval
Phone UI
Color Screen Phones:
Menu > Advanced (default password: admin) > Accounts > Account X > Proxy Fallback Interval
Black-and-white Screen Phones:
Menu > Settings > Advanced Settings > Accounts > Proxy Fallback Interval
Parameter
account.X.redundancy_with_reg_fail.enable
[1]
<MAC>.cfg
Description
It enables or disables the phone to send the request to the next server when failing to register an
account.
Note: It works only if “account.X.fallback.redundancy_type" is set to 1 (Successive registration).
Permitted
Values
0-Disabled. Only if the working server does not respond, will the IP phone send the request to the next
server.
1-Enabled
Default
0
[1]
X is the account ID. For T57W/T54W/T48U/T48S/T48G/T46U/T46S/T46G/T29G, X=1-16; for
T53W/T53/T43U/T42G/T42U/T42S, X=1-12; for T41P/T41S/T27G, X=1-6; for T40P/T40G/T23P/T23G, X=1-3; for T21
(P) E2, X=1-2; for T19(P) E2/CP920, X=1.
Failover Server Redundancy Configuration
The following table lists the parameters you can use to configure failover server redundancy.
Parameter
account.X.sip_server.Y.register_on_enable
[1][2]
<MAC>.cfg
Description
It enables or disables the phone to send registration requests to the secondary server when encoun-
tering a failover.
Permitted
Values
0-Disabled, the phone will not attempt to register to the secondary server, since the phone assumes
that the primary and secondary servers share registration information. So the phone will directly send
the requests to the secondary server.
1-Enabled, the phone will register to the secondary server first, and then send the requests to it.

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