The emergence of Voice over Internet Protocol (VoIP) telephony service has not only helped in accomplishing enormous cutback in costs but has also enabled quick adoption of next generation communication services on the same communications infrastructure. In fact, VoIP has modernized the entire telecommunication system by enabling better, efficient and cheaper ways to communicate.
A good monitoring tool or system is required for examining the voice quality, analyzing the reasons for poor quality calls and the failed calls, VoIP call traffic, inefficiencies in the system, success to the failure ratio, bandwidth utilization and should ensure optimal performance of the VoIP infrastructure.
Network engineers are mostly concerned with the network's ability to handle the VoIP traffic, the reliability of VoIP applications when traffic is high and also with the VoIP quality of service (QoS). Therefore, a good monitoring system or tool is required which should provide the administrative privileges to the network engineers for monitoring VoIP quality of service and for troubleshooting the VoIP problems.
A VoIP Monitoring system or tool–
• Should be able to handle VoIP protocols like SIP (Session Initiation Protocol), H.323, etc. as well as the proprietary protocols.
• Should be able to identify the callers.
• Should be able to detect packet loss and latency.
• Should be able to provide long-term monitoring services.
• Should be able to monitor the port opened by VoIP application.
• Should be able to provide comprehensive VoIP activity reports.
• Should be able to provide graphical representation of call flow.
• Should be able to monitor hardware devices like router, modem, switches etc.
• Should be user-friendly.
VoIP monitoring system helps users to overcome all the security threats related to VoIP like Denial of Service (DoS) attack, Man-in-the-Middle attack, eavesdropping and many more. There are many VoIP monitoring software are available in market.