GPL Open Source Downloads
The source code of components licensed under GPL used in Yealink VoIP phones can be downloaded from the table below.
| 1 | U-Boot（T2X T3X VP530 T4X W52P） | Download |
| 2 | Mtd-Utils（T2X T3X VP530 T4X W52P） | Download |
| 3 | Linux Kernel （T2X T3X VP530 T4X W52P） | Download |
| 4 | NETcat （T2X T3X VP530 T4X W52P） | Download |
| 5 | NTP Client （T2X T3X VP530 T4X W52P） | Download |
| 6 | TinyXml（T2X T3X VP530 T4X W52P） | Download |
| 7 | OpenVPN （T2X T3X VP530 T4X W52P） | Download |
| 8 | LibPcap （T2X T3X VP530 T4X W52P） | Download |
| 9 | IpTable （T2X T3X VP530 T4X W52P） | Download |
| 10 | BusyBox （T2X T3X VP530 T4X W52P） | Download |
| 11 | Cross Compiler for MIPS ( T2X T3X ) | Download |
| 12 | GNU GENERAL PUBLIC LICENSE | Download | |
| 13 | BusyBox (T4S) | Download | |
| 14 | C-Ares-Dns (T4S) | Download | |
| 15 | Curl (T4S) | Download | |
| 16 | DHCPv6 (T4S) | Download | |
| 17 | OpenLDAP (T4S) | Download | |
| 18 | OpenSSL (T4S) | Download | |
| 19 | OpenVPN (T4S) | Download | |
| 20 | PJSIP (T4S) | Download | |
| 21 | SRTP (T4S) | Download | |
| 22 | Wap_Supplicant (T4S) | Download |