Own telephone network with the use of VoIP gateways and VoIP phones

Own telephone network with the use of VoIP gateways and VoIP phones

An interesting application for VoIP devices is the ability to create your own telephone network using VoIP gateways, VoIP phones or both. In this way, based on the local LAN and its IP address or public Internet access with public IP address, you can build a network of users and connect between them without any fees and costs for these calls. Thanks to the possibility of creating their own numbering in any format, the users of such a solution can freely connect to each other, without incurring any costs associated with this numbering, or paying any subscription fees. The only cost to be incurred here is the investment in VoIP equipment, which will be connected to the IT network.
Someone would then ask why this is not a common solution and why it is not used on a daily basis. Well, it has a certain limitation, which affects its free application – it is a quantitative limitation on the interconnection of devices with each other resulting from the amount of code that can be entered into the devices, which will control their interconnectedness. Therefore, it is an interesting option for local applications. Another significant difficulty is the fact that in the case of this type of solutions, there is no device that would control the whole solution centrally, such as an IPPBX PBX or virtual telephone exchange – each device must have a separate code controlling this device and controlling connections to other devices. Therefore, each extension of the system with new devices makes it necessary to update the control code in the remaining devices already working within the solution, which can be a troublesome task.
Figure: Telephone network created with the use of VoIP devices
Legend: WAN socket (type RJ-45) – connection from the Internet LAN socket (type RJ-45) – connection of: computer, local IP network, network devices FXS socket (type RJ-11) – connection of telephones FXO socket (type RJ-11) – connection of analog telephone line Twisted-pair computer cable (Ethernet) terminated with RJ-45 connectors Flat-pair telephone cable, two or four-wire telephone cable terminated with RJ-11 connectors
However, taking into account the fact that the creation of your own telephone network is only associated with the entry costs associated with the purchase of equipment and possible configuration, it is an interesting alternative to traditional telecommunications solutions, especially if we want to create a telephone connection for a separate group of users. It should also be added that the network created in this way, can be connected to the public network PSTN, using for this purpose VoIP gateways with FXO ports, which in this case would be used as interfaces for our network to the public network. In this way, the users of a separate network created on the basis of VoIP devices are able to call them outside and outside the network.
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