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'''VoIP''', or '''Voice over Internet Protocol''', is the transmission of voice traffic over Internet protocol ([[IP]])-based networks. VoIP systems use session control protocols, which control the set-up and overall tear-down of calls and audio codecs, guaranteeing the digital audio transmission of speech over an IP network.<ref>[http://searchunifiedcommunications.techtarget.com/definition/VoIP Techtarget.com]</ref>

 

'''VoIP''', or ''''Voice over Internet Protocol'''', is the transmission of voice traffic over Internet protocol ([[IP]])-based networks. VoIP systems use session control protocols, which control the set-up and overall tear-down of calls and audio codecs, guaranteeing the digital audio transmission of speech over an IP network.<ref>[http://searchunifiedcommunications.techtarget.com/definition/VoIP Techtarget.com]</ref>

== How it works ==

== How it works ==

The working of VoIP is very simple. The user establishes a hi-speed broadband connection over a router and a VoIP gateway. The VoIP gateway is a network device which helps to convert voice and fax calls between a Public Switched Telephone Network (PSTN) and an Internet Protocol (IP) network. This gateway is placed somewhere in direct proximity to the connected Internet service. It converts the analog signals into digital format, which are in turn bifurcated into smaller 'packets.' This process is similar to the data transmission that takes place in a computer. These packets, embedded with instructions, are then sent to their final destination. Once this process is over, these packets pass through (with instructions from the other side) another gateway where they are reconverted into the normal analog format by the Public Switched Telephone Network (PSTN). This function of the packets routing the call to the number the caller has dialed, thus completing the conversation. <ref name="link 2">[http://www.fcc.gov/voip/ ffc.gov voip]</ref> <ref>[http://communication.howstuffworks.com/ip-telephony.htm howstuffworks.com]</ref> <ref name="link4">[http://www.independent-telecom-consultants-uk.co.uk/voice-over-internet-protocol.htm independent telecom consultants UK]</ref>

The working of VoIP is very simple. The user establishes a hi-speed broadband connection over a router and a VoIP gateway. The VoIP gateway is a network device which helps to convert voice and fax calls between a Public Switched Telephone Network (PSTN) and an Internet Protocol (IP) network. This gateway is placed somewhere in direct proximity to the connected Internet service. It converts the analog signals into digital format, which are in turn bifurcated into smaller 'packets.' This process is similar to the data transmission that takes place in a computer. These packets, embedded with instructions, are then sent to their final destination. Once this process is over, these packets pass through (with instructions from the other side) another gateway where they are reconverted into the normal analog format by the Public Switched Telephone Network (PSTN).<ref>[http://www.fcc.gov/voip/ ffc.gov voip]</ref><ref>[http://communication.howstuffworks.com/ip-telephony.htm howstuffworks.com]</ref><ref name="link4">[http://www.independent-telecom-consultants-uk.co.uk/voice-over-internet-protocol.htm independent telecom consultants UK]</ref>

== Equipment required ==

== Equipment required ==