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Packet delay is the length of time it takes a packet to traverse the network from one endpoint to another. When delay exceeds 50 milliseconds, users experience difficulties in carrying on a normal telephone conversation. Packet delay is created by every element in a network: switches, routers, cables (and the distance the packet has to travel), firewalls, and jitter buffers. The delay generated by routers depends not only on hardware, but also on configurations such as access lists, queuing methods, and transmission modes. In a private LAN environment, delay or latency can be controlled, but when the public network is involved, there are inherent delays that cannot be controlled.
Networks with more than 50 milliseconds of one-way delay between endpoints will produce inferior voice quality, though some users may elect to tolerate it.
Before you implement a G700 Media Gateway solution, we strongly recommend an Avaya network assessment to measure network delay and make suggestions for resolving latency issues.
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