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Selection of Frequently Asked Questions for VoIP

VoIP is the transmission of voice communication through IP packets and, therefore, through the Internet. VoIP also called Voice over Internet Protocol, IP Telephony, Internet telephony, Broadband telephony, Broadband Phone ...

Author: Milad Mir

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What is VoIP?

VoIP is the transmission of voice communication through IP packets and, therefore, through the Internet. VoIP also called Voice over Internet Protocol, IP Telephony, Internet telephony, Broadband telephony, Broadband Phone and Voice over Broadband is the routing of voice conversations over the Internet or through any other IP-based network.

How PC to PC call works?
When you make a PC-to-PC VoIP call to your friend, your analogue voice signals are first converted into many bits of digital packets on your computer. These packets are sent through the Internet to your friend's computer IP address. Upon arrival, these bits are reassembled together again at your friend's computer and your friend hear your voice.

What do I need to start using VoIP?
Computer with sound card
Internet connection
VoIP communications application such as Viatalk
Headset or USB phone

What are VoIP Service Providers (VSPs)?

VoIP Service Providers are the next generation telcos that provide interconnection between VoIP and PSTN networks. They allow call origination and termination between these two networks. You can compare and reviews at www.az-voipproviders.com.

Why do some VoIP services cost money, and why are some free?
A VoIP service can connect users not only with other VoIP customers but also with phone services that are offline, such as those that use traditional landline networks and wireless cell phone networks. For those calls, VoIP service providers must pay access fees to the landline and wireless operators. Those charges are passed along to VoIP customers. Calls that are between personal computers with VoIP service (Some VoIP providers offer free calls to some destinations).

What are VoIP Gateways?

VoIP gateways are devices that take analog voice signals and convert them to IP for transport over the LAN or WAN.

Which VoIP codec should I use?

VoIP codecs currently available are: G.711, G.723, G.726, G.729, GSM, and iLBC.

What is SIP ?

VoIP comes with an additional set of acronyms: SIP, H.323, and IAX. SIP stands for Session Initiation Protocol. SIP is a relatively simple protocol that has characteristics similar HTTP and SMTP.

About Author

Milad Mir has worked in communications sector for over 4 years.He is the person behind http://www.az-voipproviders.com (Here you can compare VoIP Providers and find a list of Voice over IP Providers.)

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Selection of Frequently Asked Questions for VoIP