https://forum.gsm-developers.com/topic/20456-%D8%B4%DA%A9%D9%8 | جی اس ام دولوپرز

https://forum.gsm-developers.com/topic/20456-%D8%B4%DA%A9%D9%88%D9%81%D8%A7%DB%8C%DB%8C-%D8%AF%D9%88%D8%A8%D8%A7%D8%B1%D9%87-%D8%A7%D9%86%D8%AC%D9%85%D9%86/