Voice over Internet Protocol diffuses voice traffic over the internet. IP, or Internet Protocol has been designed to work for networking data and upon its’ accomplishments, the Internet Protocol now uses voice networking.
Voice over Internet Protocol is able to set up different tasks as well as delivering services that are slow or that has a high cost associated with it when using PSTN:
- When using one broadband telephone line, there can be more than one phone call at a single time. Voice over Internet Protocol is able to direct additional phone lines to businesses.
- Telephone and cable companies charge extra for other features, such as caller identification, caller forwarding, and auto redialing, which are easy to handle with Voice over Internet Protocol technology.
- Unified communications are able to be secured through voice over Internet Protocol technology as well, since it permits integration for other available services that are on the internet. Some examples are instant messaging and video conversations.
There are many advantages to using Voice over Internet Protocol which more businesses are setting up every day.
Through using unified communications increases business procedures as well as simplifying human communications.
Direct Inward Dialing’s purpose allows companies to assign individual phone number to each of their employees without having separate telephone lines for each of them. This way the traffic is split and can be managed effectively.
Direct Inward Dialing requires the user to have an ISDN, which is a digital line, and then the phone company dedicates a range of phone numbers for that business. There is also equipment that needs to be installed on site which is gateways, or T1, E1, or BRI cards.
Interactive Voice Response is a new technology that is able to communicate to a user through a configured voice menu in real time. With the Interactive Voice Response system, callers are able to go through options by pressing numbers on the phone.
These systems are able to handle high call volumes at any time. With an Interactive Voice Response system, businesses are able to reduce costs and improve customer satisfaction since callers are able to call in twenty-four hours a day. There is no need for hiring humans to be working around the clock anymore.
Users are able to use Interactive Voice Response in banking by phone, scheduling flights as well as voting.
A business is able to register a Telephone Mapping Number like one registers a domain for a website. Many current voice over Internet Protocol providers provide this service for free.
Using the mapping services is still new and not widely known. This is also another step in providing a more personal mobility service in the future.
A Voice over Internet Protocol phone is easy software to use or it can be a hardware device that may look like a phone.
Some of the Voice over Internet Protocol telephone features are Call Park, caller ID and call transfer.
If a business wants to keep using their fax machine, and they have a Voice over Internet Protocol system in place, they need to have a Voice over Internet Protocol gateway and an ATA that supports a T38. The protocol for a T38 was designed to be able to allow faxes to move over a Voice over Internet Protocol network. An example of this is provided here.
There is also another way that one can convert to a fax that is computer based and also chooses a Voice over Internet Protocol system that allows faxes. A Phone system called 3CX for a Windows OS includes a server for faxes to travel over. The fax is then converted into a PDF and emailed to the receiver. This method allows faxes to be sent anywhere in their network when they use the Microsoft Fax client and server. This is free with the Windows Server years 2003 and 2008.
Another method of dealing with faxes is to connect the machine to the phone line; therefore bypassing the Voice over Internet Protocol system.
- iLBC-15Kbps, 20ms FS (frame size); 13.3 KBPS, 30 FS (frame size)
- GSM- 13Kbps, 20ms FS (frame size)
- ITU G.711-64 Kbps, sample base, Aka Alaw/Ulaw
- ITU G.722 – 48/56/64 Kilo bytes per second
- DoD CELP 4.8 Kbps
- ITU G.726 – 16/24/32/40 Kilo bytes per second
- ITU G.728 – 16 Kilo bytes per second
- ITU G.729 – 8 Kbps, 10ms FS (frame size)
- Speex – 2.15 to 44.2 Kilo bytes per second
- ITU G.723.1 – 5.3/6.3 Kbps, 30ms FS (frame size)
- LPC10 – 2.5 Kilo bytes per second
Internet Protocol phones are also known as voice over Internet Protocol phones, SIP telephones or soft phones. These are exactly the same and all transmit voice over Internet Protocol.
Every extension in the system has their own individual mailbox; so if a number is busy or the line isn’t answered, the telephone caller is forwarded to their mailbox to hear a recorded message by the operator. The message will let the caller know what to leave in their message and how to reach another extension in the system.
Using voice mail in business is crucial when keeping lines of communication to run efficiently and effectively.
Using cable or DSL connections for voice over Internet Protocol telephone usage is the best way to have a conversation. Voice over Internet Protocol along with satellite internet will work but will have pauses in between conversations.