All About VoIP

Over view of VoIP

VoIP and its operation procedures:

VoIP is Voice over Internet Protocol short form. VoIP-in, analog voice calls are converted into data packets. Packets public Internet and / or a private Internet Protocol (IP) networks such as e-mail information, like any other type of travel. VoIP has other name liked IP telephony, Internet telephony or digital phone. Someone can take advantage from this IP network for telephone conversations (on the Internet or intranets). It provides services similar to a normal land line phone, but that is usually a cheaper solution. It has some additional benefits as any other service; it will also face some problems.

Using a VoIP-based service, you can call land line or cell phone. Speaking into a microphone on both sides of your computer and listen through your computer speakers or headsets, with a computer can call from your computer.

When evaluated, using your land line telephone calls may not be worth noting. All you need is an analog telephone adapter is connected to your network. Also, in order to ensure the best voice quality and security, a private IP network, consider using your VoIP-or other communication systems.

VoIP Terminal Points

You speak in the handset or a microphone , your voice device generates the electric signal. Within a range of voltage levels that can take up to a value that is the analog signal.

Analog signals are used in the device using an algorithm implemented by a digital signal is changed. This is a Stand-Alone VoIP-phone or soft phone running on your PC can be. If you are using an analog phone, you need Telephony Adapter (TA). Digitized voice packets (in bytes collection) system and is transmitted through IP network.

Voice Data transmitted through the gateways and servers to destination PSTN network. If called number is valid then PSTN server opens a connection for that voice call.

VoIP-PSTN-connection is at the end of the device, when it is perceptible to a human ear, so his voice is brought back to analog form.

SIP or H.323 protocol during the whole process a call (for example, the connection, dis- connections and dial) are used for control and RTP data packet transmission reliability and quality of service are responsible to maintain.

How VoIP Works

VoIP: Codecs

Codec basically converts audio signal to digital compressed formats which is use for transmission . After transmission this digital data again it decompressed.