Devices and Equipment in IP Telephony
- How is it connected, why, how is it done on the right and why?
- What is the difference between the station and the linear (subscriber) part of the automatic telephone exchange?
Firstly, at the heart of any scheme (network) of the IP-telephony, there is a network switch. As a result, all devices (network nodes) IP-phones, gateways, IP-PBX, personal computers, etc. are connected via this switch.
Since IP-telephony imposes certain requirements (that is Quality of service) on the computer local network. Consequently, we will highlight the parameters of the network switchboard which is worth paying attention to when designing the IP telephony network.
The main principle scheme of organizing the IP telephony:
Switch (network switch)
Firstly, one of the main indicators of the network is switch performance. The higher this parameter, the better is the Switch. Besides, for a new network, one should consider values from 52 Gbit / s.
Number of ports
It’s easy to understand that each VoIP device needs its own Ethernet port. Besides, in practice, it is better to select the switch with a large number of ports for the future development and expansion of the company.
PoE (Power over Ethernet)
Firstly, this technology allows the remote device to transmit electrical energy along with data via a standard twisted-pair cable in an Ethernet network. Hense, one can solve the issue of the centralized power supply of all IP-phones, from a single uninterrupted power supply with the help of this technology. Consequently, the reliability of the IP telephony system is managed.
VLAN (Virtual Local Area Network)
The method of logical separation of network segments into one physical network. One uses such installations for the high security of intra-corporate departments of one or several companies.
IP telephony server
As a telephony server, you can use a regular desktop computer or a full-fledged Rack-mount (rack) server. It all depends on the budget and technical requirements for the system.
The main difference from an analog fixed device is the use of an IP network as the medium for voice transmission. Furthermore, the phone connects to the computer network as a computer through the RJ-45 connector.
IP telephony software
DECT- VoIP Phones
Wireless telephones (handsets) DECT base which uses IP telephony protocols for connection.
DECT- VoIP Phones
The program is especially relevant to implement all the functionality of the hardware IP-phone/ Also, this software works together with a headset or a USB handset.
In the IP telephony system (system), internal subscribers are not tied to the workplace. Therefore, there can be both remote operators (employees) and be inside the office.
Finally, VoIP gateways that perform conversions of analog FXO lines, GSM sim cards, and digital E1 streams connect the external station lines from the station part of the IP PBX.