Yealink SIP-T41S Administrator's Guide

Administrator’s Guide for SIP-T2 Series/T4 Series/T5 Series/CP920 IP Phones
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l Starfield Secure Certificate Authority - G2
l HydrantID SSL ICA G2
Note: Yealink endeavors to maintain a built-in list of most common used CA Certificates. Due to memory constraints, we can-
not ensure a complete set of certificates. If you are using a certificate from a commercial Certificate Authority not in the list
above, you can send a request to your local distributor. At this point, you can upload your particular CA certificate into your
phone.
TLS Configuration
The following table lists the parameters you can use to configure TLS.
Parameter
account.X.sip_server.Y.transport_type
[1][2]
<MAC>.cfg
Description
It configures the type of transport protocol.
Permitted
Values
0-UDP
1-TCP
2-TLS
3-DNS NAPTR, if no server port is given, the phone performs the DNS NAPTR and SRV queries for
the service type and port.
Default
0
Web UI
Account > Register > SIP Server Y > Transport
Parameter
static.security.default_ssl_method
[3]
<y0000000000xx>.cfg
Description
It configures the TLS version to use for handshake negotiation between the phone and server (for
example, SIP registration server, provisioning server).
Permitted
Values
0-TLS 1.0
3-SSL V23 (automatic negotiation with the server. The phone starts with TLS 1.2 for negotiation.)
4-TLS 1.1
5-TLS 1.2
Default
3
Parameter
static.security.server_ssl_method
[3]
<y0000000000xx>.cfg
Description
It configures the supported TLS version to use for handshake negotiation between the phone and
web browser.
Permitted
Values
0-TLS 1.0, TLS 1.1 and TLS 1.2
1-TLS 1.1 and TLS 1.2
2-TLS 1.2
Default
1
Supported
Devices
All phones except T48G, T46G, T42G, T41P and T29G
Parameter
static.security.trust_certificates
[3]
<y0000000000xx>.cfg
Description
It enables or disables the phone to only trust the server certificates in the Trusted Certificates list.
Permitted
Values
0-Disabled
1-Enabled, the phone will authenticate the server certificate based on the trusted certificates list. Only
when the authentication succeeds, will the phone trust the server.

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