Patent ID: 8488473

Claim:
A system to assess a voice communication quality of a communication path between first and second nodes over a network, wherein coded data of voice communication signals is transferred in a stream of packets via the communication path, comprising: a processor; and a memory which stores a plurality of instructions, which when executed by the processor, cause the processor to execute, capturing at the first node at least one packet containing coded data representing non voice signals among the packets of the coded data to be transferred from the first node to the second node; replacing a part of the coded data representing non voice signals in a captured packet with a predetermined code before the captured packet is transferred from the first node; retrieving at the second node the at least one packet containing coded data representing non voice signals transferred from the first node; and assessing the voice communication quality of the communication path on a basis of a detection of the predetermined code in the retrieved packet, wherein pattern replacement process is performed on a non-voice frame containing non-voice sound.