Simply put, IP Telephony service gives you the ability to connect a phone to your data network, hear a dial tone, make local call and long distance calls. IP Telephony offers an affordable alternative to traditional voice services using IP technology. This is the same technology that moves data, text and images around the global internet. With this technology, ordinary speech is converted to data and arranged into packets. The packets are compressed using codec’s and sent via an internet link to its destination where its then uncompressed and turned back into ordinary speech.
The choice of compression codec effects bandwidth usage and the call quality. The choice of codec and quality of your internet service provider account (in terms of upload and download speed and packet routing) can also affect your call quality.
The industry standard for measuring voice quality is as a Mean Opinion Score (MOS) on a scale from 1-5 where 1 is the lowest and 5 the highest. Telco-grade voice refers to MOS scores of around 4.0-4.2.
If an internet connection suffers from congestion or you share it with others who download large files you may get a MOS score in the range of 3.0-3.5. Delivering a call onto the Mytel network that is already degraded to 3.0-3.5 isn’t going to improve your call quality back to telco grade. So, in those circumstances you wouldn’t benefit from our business grade VoIP.
It’s possible to get a MOS score of 4.1-4.4 with a G.711 codec (operating at 64 Kbps) however that will chew up your download quota quickly and could more easily be affected by glitches in the download speed such as traffic blockages at your exchange, etc.
Using a low band width codec such as G.729 (operating at 8 Kbps) it’s still possible to achieve a MOS score of 3.9 from your IP device to the network. The difference between a traditional call and a VoIP call at a MOS of 3.9 would be virtually indiscernible to most of us.
Residential Internet Voice, also known as Voice over Internet Protocol (VoIP), is a technology that allows you to make telephone calls using a broadband Internet connection instead of a regular (or analog) phone line. Some services using VoIP may only allow you to call other people using the same service, but others may allow you to call anyone who has a telephone number – including local, long distance, mobile, and international numbers. Also, while some services only work over your computer or a special VoIP phone, other services allow you to use a traditional phone through an adaptor.
VoIP allows you to make telephone calls using a computer network, over a data network like the Internet. VoIP converts the voice signal from your telephone into a digital signal that travels over the internet then converts it back at the other end so you can speak to anyone with a regular phone number.
Organizations have hesitated in the past to move to VOIP due to the initial investment costs, the perceived technical complexities and known issues. Of course moving away from the good old reliable and stable telephony infrastructure that’s in place has always been a mayor hurdle.
Companies are now realizing that VOIP is the future. They are adjusting to the market change and planning to move to the next level; consolidation of IT/T infrastructure is the key.