The target level for Jitter is <±45ms. In order for voice to be intelligible, consecutive voice packets must arrive at regular intervals. Jitter describes the degree of variability in packet arrivals, which can be caused by bursts of data traffic or just too much traffic on the line. The target level for Packet Loss is <2%. Packet Loss is measured in terms of packet delivery and is defined as the percentage of packets sent that reach their destination within a certain time. Packet loss is a common occurrence in data networks, but devices/applications are designed to simply request a retransmission of lost packets. Voice traffic can tolerate no more than a three percent loss of packets before callers experience disconcerting gaps in conversation.