Voice Over IP

HOW VoIP WORKS

Traditional telephone networks connect two phones to each other via a direct line, which means that the full length of wire used is dedicated to that particular transfer. Voice over IP bypasses this by breaking the voice data into packets and transporting them over a network and reassembling them on the other side. This is far more efficient., since multiple packets from multiple calls can use the same line instead of simply one.

Who will benefit from VoIP?

  • Companies with branches overseas
  • Companies with clients or suppliers overseas
  • individuals with friend/family overseas

What would you require to use VoIP?

A broadband connection and equipment that will allow you to use the technology.

What does it cost?

View our country matrix for country-specific connection costs.

GETTING CONNECTED - How to connect via VoIP:

Voice over IP might be a simple protocol, but it can connect you to the world in a variety of ways:

ATA (Analog Telephone Adapter):
This is the most common method for connecting to VoIP. The ATA is a converter that connects your normal telephone to the Internet, either via a PC or direct Internet connection. Some ATAs just require to be plugged in, while others ship with software for additional options.

IP Phones:
A more expensive but very convenient way to connect online via VoIP is with IP Phones. these devices look like regular phones, but they plug directly into a broadband port and add a lot of functionality if a carrier supports them - such as Caller ID and Conference Calling.

Computer-to-Computer:
The birth place of VoIP is an expensive place and still mostly the domain of the tech savvy, because it involves two or more PCs using VoIP software to communicate. More recent software has become far easier to use and set up. Along with the emergence of free VoIP networks, it's actually very easy to try out this technology if you have a broadband-connected PC.

What equipment do I need?

SIPURA SPA-2000 Analog Telephone Adapter:

SPA-2000

Inexpensive, easy-to-install and simple-to-use, the SPA-2000 connects standard telephones and fax machines to IP-based data networks.

The SPA-2000 features two POTS (Plain Old Telephone Service) ports for connection to existing analogue phones, fax machines, PBX and key system communication platforms. The SPA includes an Ethernet interface for connection to a home or office LAN. With the SPA-2000, each phone port may be independently provisioned via software controlled by the service provider or the end user.

With the SPA-2000, individuals and companies are able to protect and extend their past investments in telephones, conference speakerphones and fax machines as well as control their migration to IP with an extremely affordable, incremental investment.
Each SPA-2000 converts voice traffic into data packets for transmission over an IP network. The SPA-2000 may be used in consumer and business IP telephony service offerings including full-featured IP Centrex. The SPA-2000 delivers clear sounding voice and reliable fax calling through its implementation of internationally recognized standards for voice and data networking.

Requirements:
Your Gateway / Router and Firewall needs to support SIP, RTP and NAT traversal. We (ISP) cannot be held responsible for any incompatibilities of the supplied device with the customer's network or services.

The Diagram below depicts a normal Voip configuration.

Frequently Asked Questions

What is VoIP
VoIP is the acronym for "Voice over Internet Protocol", also known as Internet Phone or Internet Voice. This technology allows you to make telephone calls using a broadband Internet connection instead of a regular (or analogue) 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. The service is accessed through your computer or a special VoIP phone, or a traditional phone equipped with an adaptor.

How VoIP / Internet Voice Works
VoIP converts the voice signal from your telephone into a digital signal that travels over the Internet. If you are calling a regular phone number, the signal is then converted back at the other end. Internet Voice can allow you to make a call directly from a computer. If you make a call using a phone with an adaptor, you'll be able to dial just as you always have, and the service provider may also provide a dial tone. If your service assigns you a regular phone number, then a person can call you from his or her regular phone without using special equipment.

What Kind of Equipment Do I Need?
A broadband Internet connection is required to make VoIP calls. A dedicated Internet access will give you better voice quality. If you are calling a regular telephone number, the person you are calling does not need any special equipment, just a phone.

If I have VoIP Service, Whom Can I Call?
Anybody you wish to call.

Is There a Difference Between Making a Local Call and a Long Distance Call?
At this stage the cost benefit of VOIP will only be applicable to calls to other countries. We hope to see a major development regarding this in the near future.

Does My Computer Have to be Turned On?
Not if you are making calls with a phone and adaptor or special VoIP phone, but your broadband Internet connection needs to be active. You can also use your computer while talking on the phone.