Panasonic KX-TDA0484 Getting Started

Also see for KX-TDA0480: Getting started guide Installation manual Getting started

Contents

Panasonic KX-TDA0484 Getting Started Manual pdf 8 page image

1.2 Network Devices and Numbering Plan8 Getting Started1.2.1 Network ApplicationQSIG Network InterfaceQSIG is a protocol based on ISDN (Q.931) that offers enhanced PBX features in a privatenetwork. The QSIG network supports private communications by the TIE line service method.Implementation of VoIP Gateway Cards provides a VoIP interface to employ a QSIG networkbetween PBXs at different locations by using an IP network instead of conventional telephonenetworks.NoteCLIP service is the only QSIG service available between the KX-TDA5480/KX-TDA0484and KX-TDA0480 VoIP Gateway Cards. There is no compatibility for other QSIG services.Types of IP NetworkThe VoIP Gateway Card’s quality of performance depends on the type of IP network in use.Managed IP networks provide better quality of service compared to unmanaged networks suchas the Internet, where quality of service is not guaranteed.FirewallA firewall protects the internal networks of an organization against unauthorized penetrationfrom outside. When routing a VoIP network through a firewall, some performance degradationmay result. If for practical reasons you must route the VoIP network through a firewall, refer to"A1.3 Network Devices" for more details.1.2.2 Numbering Plan ExampleThere are two methods to plan your numbering system, as follows:This section provides a network numbering mechanism using the PBX code method based onthe previous example diagram. Configure your network referring to this example.Examples of recommended IP networks• Digital Leased Line• IP-VPN (Virtual Private Network)• Frame RelayNot recommended• Internet(Delays and loss in data transmissioncan cause degradation in speechquality.)PBX codemethodIn addition to the destination number, the caller dials the unique PBX codeof the PBX to which the called party is connected. Therefore, extensionnumbers at separate PBXs in the network can overlap. For example, eachPBX in the network can have an extension whose number is 201.Extensionnumber methodThe caller dials only the destination number of the called party to callthrough PBXs at different locations (hence there are fewer digits to dialthan with the PBX code method). To employ the extension numbermethod, no two PBXs can have extensions sharing the same number. Forexample, if one PBX in the network has an extension whose number is201, no other PBX can have an extension with the same number (201).