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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 SoftwareVersionLicenseLink
Mtd-Utils GPLv2http://git.infradead.org/mtd-utils.git
Linux Kernel4.9.75GPLv2https://git.kernel.org/
OpenVPN2.4.9GPLv2https://openvpn.net/
LibPcap4.1.3BSDhttps://github.com/patmarion/winpcap/tree/master/
IpTable1.4.2GPLv2https://www.netfilter.org/pub/iptables/
BusyBox1.10.3GPLv2https://www.busybox.net/downloads/
C-Ares-Dns1.9.1MIThttps://c-ares.org/download/
Curl7.77.0MIThttps://github.com/curl/curl/archive/master.zip
OpenLDAP2.4.46GNU, GPLhttps://git.openldap.org/jotik/openldap/-/tags/OPENLDAP_REL_ENG_2_4_46
OpenSSL1.1.1gApachehttps://www.openssl.org/source/old/1.0.2/openssl-1.0.2n.tar.gz
PJSIP2.3GPLv2https://github.com/pjsip/pjproject/releases/tag/2.3
SRTP2.3.0GPLhttps://github.com/cisco/libsrtp/releases/tag/v2.3.0
libusb1.0.23the GNU Lesser General
Public License
https://github.com/libusb/libusb/archive/master.zip
libhid0.8.0-rc1GNU General Public Licensehttps://github.com/libusb/hidapi/archive/master.zip
Wap_Supplicant2.9GPLv2https://www.linuxfromscratch.org/blfs/view/8.1/basicnet/wpa_supplicant.html
libwebsockets3.2MIThttps://github.com/warmcat/libwebsockets
expat2.1.0MIThttps://sourceforge.net/projects/expat/files/expat/2.1.0/
libstrophe0.8MIT, GPLv3https://github.com/strophe/libstrophe
thrift0.10.0Apachehttps://downloads.apache.org/thrift/0.10.0/
rapidjson1.1.0MIThttps://github.com/Tencent/rapidjson
pugixml1.2MIThttps://source.openmpt.org/svn/openmpt/tags/1.23.05.00/include/pugixml/docs/quickstart.html
dnsmasq2.85GPLV2https://thekelleys.org.uk/dnsmasq/
pppd2.4.3BSDhttps://github.com/ppp-project/ppp
xl2tpd1.3.15GPLV2https://github.com/xelerance/xl2tpd/
freetype2.10.1FTLhttps://www.freetype.org/
libjpeg Custom free software licensehttps://sourceforge.net/projects/libjpeg/reviews
libpng1.6.34Zlib licensehttp://www.libpng.org/pub/png/libpng.html
mtdev MIT (X11) Licensehttp://bitmath.org/code/mtdev/



 
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