Với dịch vụ IPVOX bạn sẽ gọi rẻ nhất

Những thuận lợi chính

You need

To use the IPVOX service smoothly you need an internet connection with minimum 25 kbit/s to use audio codec G.729 or 80 kbit/s to use audio coded G.711 for each call. Exchange response should not exceed 150 ms. This speed and response of connection should be stable.

You do not need

You can