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Statement on the Open Source Software of Yealink IP Phones


 
Yealink IP Phone products utilize some software from the open source community. Therefore, you must obtain the licenses according to the specific license terms applicable to the software. The following table lists the license information of the open source software used by Yealink T3X, T4XU, and T5XW IP phone series, for reference only. Yealink will provide the source code and license of the open source software as you need.
 
Open Source Software Version License Link
Mtd-Utils   GPLv2 http://git.infradead.org/mtd-utils.git
Linux Kernel 4.9.75 GPLv2 https://git.kernel.org/
OpenVPN 2.4.9 GPLv2 https://openvpn.net/
LibPcap 4.1.3 BSD https://github.com/patmarion/winpcap/tree/master/
IpTable 1.4.2 GPLv2 https://www.netfilter.org/pub/iptables/
BusyBox 1.10.3 GPLv2 https://www.busybox.net/downloads/
C-Ares-Dns 1.9.1 MIT https://c-ares.org/download/
Curl 7.77.0 MIT https://github.com/curl/curl/archive/master.zip
OpenLDAP 2.4.46 GNU, GPL https://git.openldap.org/jotik/openldap/-/tags/OPENLDAP_REL_ENG_2_4_46
OpenSSL 1.1.1g Apache https://www.openssl.org/source/old/1.0.2/openssl-1.0.2n.tar.gz
PJSIP 2.3 GPLv2 https://github.com/pjsip/pjproject/releases/tag/2.3
SRTP 2.3.0 GPL https://github.com/cisco/libsrtp/releases/tag/v2.3.0
libusb 1.0.23 the GNU Lesser General
Public License
https://github.com/libusb/libusb/archive/master.zip
libhid 0.8.0-rc1 GNU General Public License https://github.com/libusb/hidapi/archive/master.zip
Wap_Supplicant 2.9 GPLv2 https://www.linuxfromscratch.org/blfs/view/8.1/basicnet/wpa_supplicant.html
libwebsockets 3.2 MIT https://github.com/warmcat/libwebsockets
expat 2.1.0 MIT https://sourceforge.net/projects/expat/files/expat/2.1.0/
libstrophe 0.8 MIT, GPLv3 https://github.com/strophe/libstrophe
thrift 0.10.0 Apache https://downloads.apache.org/thrift/0.10.0/
rapidjson 1.1.0 MIT https://github.com/Tencent/rapidjson
pugixml 1.2 MIT https://source.openmpt.org/svn/openmpt/tags/1.23.05.00/include/pugixml/docs/quickstart.html
dnsmasq 2.85 GPLV2 https://thekelleys.org.uk/dnsmasq/
pppd 2.4.3 BSD https://github.com/ppp-project/ppp
xl2tpd 1.3.15 GPLV2 https://github.com/xelerance/xl2tpd/
freetype 2.10.1 FTL https://www.freetype.org/
libjpeg   Custom free software license https://sourceforge.net/projects/libjpeg/reviews
libpng 1.6.34 Zlib license http://www.libpng.org/pub/png/libpng.html
mtdev   MIT (X11) License http://bitmath.org/code/mtdev/