Voice Over IP Here are a few terms defined to make VoIP seem less intimidating:

VoIP:

Voice over internet protocol.  In the 90’s, data was transmitted over the phone network.  Now voice communication is transmitted over data networks, like a MPLS network.  It’s just a better use of resources.

Dynamic Bandwidth:

Instead of the traditional segmented integrated T1’s, integrated T1’s today offer dynamic bandwidth.  That means that whatever bandwidth that is required to place a phone call is freed up when the call is completed.  Dynamic bandwidth is offered by almost every provider, including Qwest, Integra, TW Telecom and XO.

Class of Service:

Class of Service allows the prioritizing of real time traffic, like voice and video, over traditional data traffic.

QoS:

Quality of Service.  Term to describe the voice quality on a Voice over IP service.  QoS is improved by managing the jitter and latency levels on the internet service that the VoIP rides on.

Jitter:

Jitter is the variation in the time between packets arriving, caused by network congestion, timing drift or route changes.  Jitter has the biggest effect on the quality of speech on a VoIP circuit.

Latency:

Delay on an internet connection.

SIP:

Session Initiation Protocol.  A voice path over the Internet.  Allows for voice communication over almost any business internet connection.

Prioritizing Traffic:

What’s necessary to assure quality voice communication, like SIP. over the internet.  Real time traffic, like voice and video, is given a priority over data traffic.

Compression:

A way to reduce the amount of bandwidth necessary to make a phone call.  By using compression, there can be more simultaneous phone calls on an internet circuit.  Compression can have a negative effect on call quality and fax transmissions, however.

MPLS:

Multiprotocol Label Switching.  A private network on the public internet where priorities can be set where real time traffic, like voice and video, takes priority over data traffic.

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