General operation of VoIP systems
To transmit voice as digital data packets over the network using the IP protocol, the data is compressed (using a codec), grouped together, sent over the Internet, and decompressed when it reaches its destination.
In order for the voice to be encoded into digital signals ( voice data ) and transmitted in packets, the SIP Protocol ( Session Initiation Protocol ) is used. This is the standard or telephony system used for VoIP calls (voice and multimedia: sound, image, etc.).
This protocol allows absolute interoperability between devices for real-time voice reproduction.
Voice is transmitted over IP-compatible networks such as:
Private networks;
Internet connection;
wired networks (fiber optic, cable, ADSL);
wireless networks (GSM, Wi-Fi, satellite, UMTS or LTE).
VoIP Telephony - Examples
Common examples of this type of system include:
Skype ,
WhatsApp,
Viber,
Facebook Messenger,
Xbox Live.
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What is needed to implement IP telephony in companies?
VoIP and IPBX
Specifically, a company that wants to adopt australia whatsapp shopping data a VoIP service must connect its terminals to an IPBX ( Internet Protocol Private Branch eXchange ), or IP PBX . This is a telephone exchange, in turn connected to the operator.
It therefore differs from the PABX ( Private Automatic Branch eXchange ), a telephone switchboard that operates through traditional telephone networks , not the IP network.
There are different types of IPBX:
The physical IPBX : integrated into a local infrastructure, it takes the form of a box installed in the company.
Centrex : if the use of an IPBX is still necessary, everything is managed and centralized by a third party, a telephone operator for example, and the telephone infrastructure is dedicated to several customers. In this case, the service is hosted in the cloud or on an external server .
Virtual PBX : In this case, the PBX is 100% cloud-based, but remains private . The company therefore has no telephone infrastructure to manage.
When your IP telephony system infrastructure is hosted in the cloud, it is called cloud telephony . This technology offers specific advantages, as the IPBX is not stored on your premises. It also greatly simplifies your processes, as it only requires a web application to connect to the different services.
What are VoIP phones like?
Regarding devices compatible with VoIP technology, there are different types of terminals:
Softphone : This is software deployed for telephony. In this case, a phone is not necessary. All you need is a computer (which all companies have), a speaker, a microphone and possibly a headset.
The hardphone or IP phone : it is similar to a normal telephone, except that it is connected to the Internet.
The wifi IP phone : like the previous one, it does not require any connection since it connects via wifi.
VoIP telephony: advantages and disadvantages
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