Yealink SIP-T41S Administrator's Guide

Administrator’s Guide for SIP-T2 Series/T4 Series/T5 Series/CP920 IP Phones
113
Default
Blank
Parameter
static.server_certificates.url <y0000000000xx>.cfg
Description
It configures the access URL of the certificate the phone sends for authentication.
Note: The certificate you want to upload must be in *.pem or *.cer format.
Permitted
Values
URL within 511 characters
Default
Blank
Web UI
T57W/T54W/T53W/T53/T48U/T46U/T43U/T42U:
Security > Server Certificates > Upload Server Certificate File
Other Phones:
Security > Server Certificates > Load Server Certificates File
Parameter
static.server_certificates.delete <y0000000000xx>.cfg
Description
It deletes all uploaded server certificates.
Permitted
Values
http://localhost/all
Default
Blank
Parameter
static.phone_setting.reserve_certs_enable <y0000000000xx>.cfg
Description
It enables or disables the phone to reserve custom certificates after it is reset to factory defaults.
Permitted
Values
0-Disabled
1-Enabled
Default
0
Parameter
static.phone_setting.reserve_certs_config.enable
[3]
<y0000000000xx>.cfg
Description
It enables or disables the phone to reserve the trusted and server certificates settings after the phone
reset to factory defaults.
Permitted
Values
0-Disabled, “static.security.trust_certificates”, “static.security.ca_cert”, “static.security.cn_validation”
and “static.security.dev_cert” will be reset.
1-Enabled, “static.security.trust_certificates”, “static.security.ca_cert”, “static.security.cn_validation”,
“static.security.dev_cert” and “static.phone_setting.reserve_certs_config.enable” will not be reset.
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.
[2]
Y is the server ID. Y=1-2.
[3]
If you change this parameter, the phone will reboot to make the change take effect.
Secure Real-Time Transport Protocol (SRTP)
Secure Real-Time Transport Protocol (SRTP) encrypts the audio streams during VoIP phone calls to avoid inter-
ception and eavesdropping. The parties participating in the call must enable SRTP feature simultaneously. When
this feature is enabled on both phones, the type of encryption to use for the session is negotiated between the
phones. This negotiation process is compliant with RFC 4568.

Yealink SIP-T41S Specifications

General

Mounting	Desk/Wall
Handset type	Wired handset
Product type	IP Phone
Product color	Black
Keypad illumination	Yes
Wi-Fi	No
Networking standards	IEEE 802.3af
Ethernet LAN data rates	10, 100 Mbit/s
Ethernet LAN interface type	Fast Ethernet
Supported network protocols	SIP v1, SIP v2, LLDP/CDP/DHCP, OpenVPN, IEEE802.1X, IPv6, FTP/TFTP/HTTP/HTTPS
Volume control	Digital
Number of programmable keys	6
Lines quantity	6 lines
Phonebook capacity	1000 entries
Dual-Tone Multi-Frequency (DTMF) modes	In-band, Out-of band, SIP info
Input frequency	50/60 Hz
AC adapter input voltage	100 - 240 V
AC adapter output current	1.2 A
AC adapter output voltage	5 V
Display diagonal	2.7 \
Display resolution	192 x 64 pixels
Operating temperature (T-T)	-10 - 50 °C
Operating relative humidity (H-H)	10 - 95 %
Voice codecs	CNG, G.711Mu, G.711a, G.723.1, G.726, G.729ab, VAD, iLBC
Certification	CE
Cables included	LAN (RJ-45)
Number of handles included	1 pc(s)
Harmonized System (HS) code	85171800

Weight and Dimensions

Depth	189 mm
Width	212 mm
Height	175 mm
Package depth	223 mm
Package width	246 mm
Package height	120 mm