Panasonic KX-TDA0490 Getting Started

Also see for KX-TDA0490: Programming guide Getting started

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Panasonic KX-TDA0490 Getting Started Manual pdf 48 page image

A1 VoIP Requirements48 Getting StartedTo limit the number of VoIP channels:• Set the status of the ports you wish to disable (starting from the highest-numbered port) to OUS.For example, if you wish to use only 10 of the available 16 VoIP channels (i.e., disable 6channels), set the ports 8, 7, and 6 to OUS as shown below:In this case, the equation for bandwidth calculation, based on the previous example, will be changedas follows:A1.2 Network ConfigurationYou must evaluate the structure of the existing network to see if a VoIP network can be implemented.Below are the points that should be taken into your evaluation.Is the IP network a managed network?A VoIP network should be implemented on a managed IP network such as Frame Relay, Leased Line,or IP-VPN (Virtual Private Network).An unmanaged network, such as the Internet (including an Internet VPN), cannot be used to employa VoIP network because delays and loss in data transmission can cause huge degradation in speechquality.Required Bandwidth= (No. of Fax Machines × Required Bandwidth for the G.711 CODEC) +[(10 - No. of Fax Machines) × Required Bandwidth for Voice Communication]= (2 × 87.2) + [(10 - 2) × 31.2]= 424 (kbps)