Of hai lian jie (small and medium-sized enterprises (smes) are introduced in this solution: due to the telecom operators line rental fee is very expensive, is a big burden for small and medium-sized enterprises, so the network mode of small and medium-sized enterprises generally using ADSL, to reduce the cost, and ADSL network mode are often passed through several layers of address translation, so the division or branch of IP phone terminal cannot penetrate the firewall, implementation and successful calls outside, so I need router configuration 1 media in headquarters (MR) to do voice acting, the call connection is established in this paper, all the terminal as long as you can register to smear MR,
Related to download links://download.csdn.net/download/weixin_38606897/12227319? Utm_source=bbsseo