What is VOIP?
Voice over Internet Protocol i.e VOIP is a drastic and far-reaching change in ways of thinking and behavior of voice communications over IP networks such as the Internet or other packet-switched networks. You heard of VOIP services in IP telephony, Internet telephony, voice over broadband (VoBB), broadband telephony, and broadband phone.The best features is the VOIP solutions are highly cost effective.
Why should we use VOIP services?
The recent development in technology provides prominent attribute due to which the bandwidth efficiency and costs of the VoIP technology are very cheap.In this time of recessions Companies and Business are applying the cost cut. Do you know switching from traditional telephone systems to VoIP systems reduce the monthly phone costs by so many times.Moreover VoIP also offers the advantage of running both voice and data communications over a single network which can represent a significant saving in infrastructure costs.VoIP can be a benefit for reducing communication and infrastructure costs.It have so many cost less features like Conference calling, IVR, call forwarding, automatic redial, and caller ID features.
Easy to integrate – Desegregation of VOIP solutions together with other services available over the Internet is very simple and feasible.For example video conversation, message or data file exchange in parallel with the conversation, audio conferencing, managing address books, and passing information about whether.
Here is an awesome presentations on the need of Voip in the business as VoIP for business.
Points to remember before choosing VOIP service providers?
Their are various service providers all over the word ranging from Asia,America and Canada voip provider so you should keep in mind the following points regarding the services of the VOIP :
- Interconnection to traditional PSTN telephones
- Quality of Service – It is very important to have good Quality of service because voice travels over IP networks in packets in the same manner as data transmit over internet, so when you talk over an IP network your conversation is broken up into small packets.So you should check whether your service provider have a packet loss and delay is congestion or not.
- Susceptibility to Power failure
- PSTN Integration – Echo can also be an issue for PSTN integration so you should check whether you service provider have this problem or not.
- Interconnection to traditional PSTN telephones – Some analog telephone adapters do not decode pulse dialing from older phones so you should check whether your voip service provider have this issues or not.
- Security – Your service provider must root VoIP traffic through firewalls and address translators in order to saves your precious information’s.
Example of VOIP service providers
I recently came across Canada voip provider which provides brobdingnagian list of services ranging from 911 Dialing ,Voicemail,Caller ID,Call Waiting,Call Forwarding,In-Network Calls,Call return,Call Transfer,Distinctive Ringing,Intercom Dialing,Hunt Group,Message Waiting,Music on Hold,Speed Dialing,3-way Calling,Toll Restriction and many more.I also came to know that they are providing 1 months free unlimited calls and have good Customer Service .
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Hot entry: Using VOIP for a revolutionary business http://www.techprone.com/?p=470
Hello. Great job. I did not expect this on a Wednesday. This is a great story. Thanks!
Hello , I like a lot of your blog post especially the article regarding OIP for a revolutionary business | Tech Prone, it looks very interesting.
Impressive piece of information, let me elaborate more on VoIP. Voice over Internet Protocol has been around since many years. But due to lack of sufficient and affordable bandwidth it was not possible to carry carrier grade voice over Internet Protocol. But since the arrival of low cost internet bandwidth and new speech codecs such as G.729, G.723 which utilizes very low payload to carry carrier class voice it has recently been possible to leverage the true benefits of VoIP. G.723 codec utilizes only 6 Kbps (Kilo Bytes/sec) which is capable of maintaining a constant stream of data between peers and deliver carrier grade voice quality. Lets put this way if you have 8 Mbps internet connection, by using G.723 codec you can run upto 100 telephone lines with crystal clear and carrier grade voice quality. I am also a user of VoIP and have setup a small PBX at home. Since I have discovered VoIP I have never used traditional PSTN service.
Dear readers, if you have not yet tried VoIP I suggest that you try VoIP technology and I bet you will never want to use the traditional PSTN phone service ever again. VoIP has far more superior features to offer which traditional PSTN sadly cannot offer.
Also It has recently been possile to carry Video alongwith VoIP by using low payload video codecs. I cannot resist to tell you that by using T.38 passthrough and disabling VAD VoIP can carry FAX transmission, but beaware FAX T.38 passthrough will only work when using wide band protocols such as G.711, a-Law and u-Law.
By using ATA (Analog Telephone Adapter) which converts VoIP signals into traditional PSTN you can also using Dial-up modems to connect to various dialup services. I wont go in to the details what VoIP can offer, to cut my story short VoIP is a must to have product for every business and individual.
How VoIP Works
When we make a VoIP call, a communication channel is established between caller and called party over IP (Internet Protocol) which runs on top of computer data networks. A telephony conversation that takes place over VoIP are converted into binary data packets streams in real time and transmitted over data network, when these data packets arrive at the destination these are again converted into standard telephony conversation. This whole process of voice conversion into data, transmission and data conversion into back voice conversation takes place within less than few milliseconds. That is how a VoIP is call is transmitted over data networks. I hope that now you understand basics of how a VoIP call takes place.
What are speech codec’s and what role codec plays in VoIP?
Speech codec play a vital role in VoIP and codec determines the quality and cost of the call. Let me explain you what exactly VoIP codec’s are and how they work. You may have heard about data compression, or probably you have heard about air compressor which compresses a volume of air in enclosed container, VoIP codec’s are no different than a air compressor. Speech codec’s compresses voice into data packets and decompresses it upon arrival at destination. Some VoIP codec’s can compress huge amount of voice while maintaining QoS which means use this type of codec will cost less because it will consume just a fraction of data network. Some codec’s are just not capable of encoding huge amount of voice they simply consume huge amount of data networks bandwidth hence the cost goes up.
Following is a list of VoIP codec’s along with how much data network bandwidth they consume.
* AMR Codec
* BroadVoice Codec 16Kbps narrowband, and 32Kbps wideband
* GIPS Family – 13.3 Kbps and up
* GSM – 13 Kbps (full rate), 20ms frame size
* iLBC – 15Kbps,20ms frame size: 13.3 Kbps, 30ms frame size
* ITU G.711 – 64 Kbps, sample-based Also known as alaw/ulaw
* ITU G.722 – 48/56/64 Kbps ADPCM 7Khz audio bandwidth
* ITU G.722.1 – 24/32 Kbps 7Khz audio bandwidth (based on Polycom’s SIREN codec)
* ITU G.722.1C – 32 Kbps, a Polycom extension, 14Khz audio bandwidth
* ITU G.722.2 – 6.6Kbps to 23.85Kbps. Also known as AMR-WB. CELP 7Khz audio bandwidth
* ITU G.723.1 – 5.3/6.3 Kbps, 30ms frame size
* ITU G.726 – 16/24/32/40 Kbps
* ITU G.728 – 16 Kbps
* ITU G.729 – 8 Kbps, 10ms frame size
* Speex – 2.15 to 44.2 Kbps
* LPC10 – 2.5 Kbps
* DoD CELP – 4.8 Kbps
Switch to VoIP Today and you will never want to use traditional PSTN ever again.
Thanks
-Imran
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