Cisco 7941 SIP Frimware

http://abar-ertebat.com/%D8%AF%D8%A7%D9%86%D9%84%D9%88%D8%AF-%D8%A2%D9%BE%D8%AF%DB%8C%D8%AA-%D8%B3%DB%8C%D9%BE-%D9%81%D9%88%D9%86-%D8%B3%DB%8C%D8%B3%DA%A9%D9%88/

http://voipshopping.net/blog/%D8%AA%D9%86%D8%B8%DB%8C%D9%85%D8%A7%D8%AA-SIP-%D8%AA%D9%84%D9%81%D9%86-%D8%B3%DB%8C%D8%B3%DA%A9%D9%88-7940-7960-7961

https://adpm.ir/2018/11/18/%D8%AA%D9%86%D8%B8%DB%8C%D9%85-%D8%AF%D8%A7%D8%AE%D9%84%DB%8C-sip-%D8%A8%D8%B1%D8%A7%DB%8C-%D8%AA%D9%84%D9%81%D9%86-%D8%B3%DB%8C%D8%B3%DA%A9%D9%88/

https://www.geekboy.pro/ipphone-cisco-7900-change-sccp-firmware-to-sip

https://www.whizzy.org/2017/02/cisco-7941-asterisk-and-sip/

http://www.firewall.cx/downloads/cisco-tools-a-applications/cisco-ip-phone-a-ata-firmware-downloads.html?limit=20&limitstart=20

https://1000network.com/fa/articles/detail12188/%DA%86%DA%AF%D9%88%D9%86%D9%87-firmware-%DA%AF%D9%88%D8%B4%DB%8C-%D9%87%D8%A7%DB%8C-%D8%AA%D9%84%D9%81%D9%86-%D8%A2%DB%8C-%D9%BE%DB%8C-%D8%B3%DB%8C%D8%B3%DA%A9%D9%88-%D8%B3%D8%B1%DB%8C-7900-%D8%B1%D8%A7-%D8%A7%D8%B2-SCCP-%D8%A8%D9%87-SIP-%D8%AA%D8%BA%DB%8C%DB%8C%D8%B1-%D8%AF%D8%A7%D8%AF%D8%AE-%D9%88-%DB%8C%D8%A7-%D8%A8%D8%B1%D9%88%D8%B2-%D8%B1%D8%B3%D8%A7%D9%86%DB%8C-%D9%86%D9%85%D8%A7%DB%8C%DB%8C%D9%85/