Panasonic KX-TDA0480 Getting Started

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Panasonic KX-TDA0480 Getting Started Manual pdf 46 page image

A3 Optimising Performance46 Getting Startedprovide the VoIP Gateway Card with clear transmission paths.VoIP Gateway Card LocationOne preventative measure is to install the VoIP Gateway Card so that the number oftransmission hops is kept to a minimum. In the figure below, the VoIP Gateway Card is locatedas close to the WAN interface as possible.A3.3 Priority ControlSome routers permit the configuration of priority control features. This allows the router to beconfigured to give higher priority to packets with high priority flags. The priority control featureshould be used when available.To configure, refer to "4.9.1 Configure Gateway Units (KX-TDA0480)" in the VoIP GatewayCard Installation Manual.A3.4 Recovery Delay and Jitter BufferWhen voice signals are packetised and transmitted, individual packet can take different pathsthrough the network and arrive at the destination at varied timings (Jitter). The VoIP GatewayCard supports a secondary Jitter Buffer (max. 1920 ms) in which the packets are accumulatedtemporarily for processing to compensate for network congestion problems.To configure, refer to "4.9.1 Configure Gateway Units (KX-TDA0480)" in the VoIP GatewayCard Installation Manual.A3.5 Internet, Intranet, and Virtual Private Networks (VPN)Manageable networks (e.g., Intranet, Leased Lines, VPN) provide better quality of servicecompared to unmanageable networks such as the Internet.Hybrid IP-PBXRouterSwitchToo many HOPS!SwitchHubHybrid IP-PBXRouterSwitchBetter!(IP PBX located nearest WAN access point)SwitchHub

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