- مبلغ: ۸۶,۰۰۰ تومان
- مبلغ: ۹۱,۰۰۰ تومان
Technologies dealing with the possibility of voice calls transmission using Internet Protocol (IP) data networks are summarily referred to as VoIP , , , . Using data packet-switched network unlike the circuit switched network is a fundamental distinction from traditional telecommunication networks. Data packetswitched network in the most cases partially or completely does not guarantee the quality of services. Preference of IP networks as transport medium has brought that technology tremendous opportunities for simple and flexible extension in the world of computer networks. On the other hand, it is a source of large number of specific problems which VoIP technology carries. The main issue in most IP networks is the inability to guarantee a certain quality parameters of transmission, especially network delay problems. The network delay plays a key function in the IP telephony, which may mostly influence the final quality of communication.