Voice over IP
Historically, telephone calls were made through Public Switched Telephone Networks (PSTN), which provided high-quality voice transmission between two or more parties. However, since the demand for data traffic is growing faster than voice traffic, we've seen a gradual shift towards packet-based networks like IP, ATM and Frame Relay. Packet-based networks provides high cost-benefit ratio and an increasing number of businesses are realizing the value of transporting their voice circuits over IP networks to reduce expenses. Savings, coupled with exceptional Quality of Service (QoS), are synonymous with Voice over IP (VoIP).