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Knowledge Base .: Glossary

Glossary


Terms in glossary: 62.

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API
Application Program Interface is a set of routines, protocols, and tools for building software applications.
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ATA
An analog telephone adaptor (ATA) is a device used to connect a standard telephone to a computer or network so that the user can make calls over the Internet.
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Bandwidth
A synonym for data transfer rate - the amount of data that can be carried from one point to another in a given time period (usually a second). This is usually expressed in bits (of data) per second (bps).
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Billing Address
The location or address where all invoices or charges are billed.
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BYOD
Bring Your Own Device refers to a plan of service with equipment that our system has not been tested for and is unsupported.
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Cable Modem
A type of device that allows people to access the Internet via their cable television service.
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Caller ID
Caller ID allows the person being called to see the number (and sometimes the name) of the person calling them, when they have the correct equipment to receive the callerid information.
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Codec
A device or program capable of performing encoding and decoding on a digital data stream or signal. The word codec may be a combination of any of the following: 'compressor-decompressor', 'coder-decoder', or 'compression/decompression algorithm'.
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DHCP
A protocol used by networked devices (clients) to obtain various parameters necessary for the clients to operate in an Internet Protocol (IP) network. By using this protocol, system administration workload greatly decreases, and devices can be added to the network with minimal or no manual configurations.
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DMZ
Allows one IP Address (computer) to be exposed to the Internet to use a special-purpose service such as Internet gaming or Video-conferencing.
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DNS
Short for Domain Name System (or Service or Server), an Internet service that translates domain names into IP addresses.
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DTMF
Dual-Tone MultiFrequency is the type of audio signals that are generated when you press the buttons on a touch-tone telephone.
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Dynamic IP
A temporary number that is assigned to a computer by an ISP for the duration of the Internet session or a specified amount of time.
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E-911
A North American telephone network (NANP) feature of the 911 emergency-calling system that automatically associates a physical address with the calling party's telephone number. This is generally done by a form of reverse telephone directory that is supplied by the telephone company as a computerized file. Computer software makes an association between the caller's line and a street address.
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G.711
A high bit rate (64 Kbps) ITU standard codec. It is the native language of the modern digital telephone network.
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G.729
An audio data compression algorithm for voice that compresses voice audio in chunks of 10 milliseconds. Music or tones such as DTMF or fax tones cannot be transported reliably with this codec, and thus use G.711 or out-of-band methods to transport these signals.
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Gateway
A device which converts telephony traffic into IP for transmission over a data network
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Hub
A common connection point for devices in a network. Hubs are commonly used to connect segments of a LAN. A hub contains multiple ports. When a packet arrives at one port, it is copied to the other ports so that all segments of the LAN can see all packets.
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IP
A network-layer (Layer 3) protocol that contains addressing information and some control information that enables packets to be routed.
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IP Phone
A telephone that looks just like a conventional phone but instead of a conventional phone jack, it has an Ethernet port through which it communicates directly with a VoIP server, VoIP gateway or another VoIP phone.
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ISP
A business or organization that provides consumers or businesses access to the Internet and related services.
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ITU
The International Telecommunications Union, in Geneva, Switzerland is an international organization within the United Nations System that issues 'Recommendations' for global telecom networks and services.
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Jitter
The variation in the time between packets arriving, caused by network congestion, timing drift, or route changes.
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LAN
A local area network is a group of computers and associated devices that share a common communications line or wireless link. Typically, connected devices share the resources of a single processor or server within a small geographic area (for example, within an office building).
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Latency
A synonym for delay, is an expression of how much time it takes for a packet of data to get from one designated point to another.
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