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Problem: LAN Congestion

LAN congestion is often the result of using low speed LANs (10BaseT) and/or passive hubs. This results in a high rate of collisions on the LAN, which increases jitter and packet loss rates. 10BaseT congestion will lead to jitter levels 10 times that of 100BaseT, and hence it is advisable to use 100BaseT for Voice over IP traffic.


LAN congestion can lead to short term congestion, and hence packet discards. LAN congestion tends to be more transient than access link congestion, hence causes short periods of call quality degradation


LAN congestion can be reduced by using dedicated 100BaseT links for connections to desktops and servers, using switches instead of hubs and using Gigabit Ethernet for inter-switch connections.


Network Analyzer, VQmon

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