Which term refers to the time taken for a voice packet to move from the starting point to the final point?

Packet loss refers to the percentage of packets that fail to arrive at the destination entirely, which is a separate quality impairment distinct from travel time.

Congestion describes a network state in which traffic demand exceeds available link capacity, and while congestion can increase delay, it is not itself the measurement of packet travel time.

Delay (end-to-end latency) is defined as the total time elapsed for a voice packet to travel from its source endpoint to its destination endpoint. In VoIP quality measurement, one-way delay exceeding approximately 150ms becomes perceptible to users and degrades conversational quality, making it a primary QoS metric.

Bandwidth refers to the maximum data transfer capacity of a network link, measured in bits per second, which is a capacity metric rather than a time measurement.