Quadro Quadro4x Guide de l'utilisateur télécharger pdf (Page 42)

Quadro Manual III: Extension User's Guide Extension User’s Menus

Quadro2x, 2xi, Quadro4x, 4xi, Quadro16x, 16xi; (SW Version 5.2.x) 42

Ethernet - a localarea network used for connecting computers, printers, workstations, terminals, servers, etc., within the same building or campus.

Ethernet operates over twisted pair and/or over coaxial cable at speed up to 10Mbps.

Ethernet Controller - the unit that connects a device to the Ethernet cable.

Ethernet Switch - the device that connects local area networks.

Extensions - users over Quadro.

External User - users connecting Quadro by IP or PSTN calls.

Firewall - a combination of hardware and software that limits the exposure of a computer or group of computers to an attack from outside. A firewall

is a system or combination of systems that enforce a boundary between two or more networks. One purpose of an Internet firewall is to provide a

single point of entry where a defense can be implemented, allowing access to the Internet resources from within the organization, and providing

controlled access from the internet to hosts inside the organization’s internal networks.

Firmware - is computer or OS required software that resides on ROM

Foreign Exchange (FX) - a Central Office trunk that has access to a distant Central Office. A dial tone is returned from that distant Central Office

and a location can be reached in the area of the foreign Central Office by dialing a local number.

Foreign Exchange Office (FXO) - a service that can be ordered from the telephone company that provides local telephone service from a central

office that is outside (foreign to) the subscriber’s exchange area. To generate a call from the computer telephony system to the POTS set, you will

need a FXS connection configured. See also FXS.

Foreign Exchange Station (FXS) - Interface that connects directly to a standard telephone, fax machine, or similar device over a standard RJ-11

modular telephone cable, and supplies ringing voltage, dial tone, and similar signals to it. see FXO

Framing - A procedure for controlling errors. Consists of inserting bits so the receiver can identify the time slots allocated to each subchannel

Gatekeeper - is the central control entity that performs management functions in a Voice and Fax over IP network and for multimedia applications

such as video conferencing. Gatekeepers provide intelligence for the network, including address resolution, authorization, and authentication

services, the logging of call detail records, and communications with network management systems. Gatekeepers also monitor the network for

engineering purposes as well as real-time network management and load balancing, controlling bandwidth, and providing interfaces to existing

legacy systems.

Gateway - an entrance into and out from a communications network. Technically, a gateway is an electronic repeater that intercepts and steers

electrical signals from one network to another.

Greeting - voice messages that are played to the Quadro users or users calling to the Quadro activating specific services.

Hold Music - music played to the party that is on hold.

Host - an intelligent device attached to the network; can be also a mainframe computer.

Host Name - the name given to a mainframe computer or device.

Hunt Grouping - the Quadro service that allows configuring several users over Quadro to ring in series when a specific call arrives.

Hypertext Transfer Protocol (HTTP) - the protocol used by Web browsers and Web servers to transfer files, such as text and graphics files.

Integrated Services Digital Network (ISDN) - is a system of digital phone connections which allows voice and data to be transmitted

simultaneously across the world using end-to-end digital connectivity. There are two basic types of ISDN service: Basic Rate Interface (BRI) and

Primary Rate Interface (PRI). BRI is a basic service is intended to meet the needs of most individual users. PRI is intended for users with greater

capacity requirements

Internet Control Message Protocol (ICMP) - a network-layer Internet protocol that reports errors and provides other information relevant to IP

packet processing.

Internet Protocol (IP) - a unique, 32-bit number for a specific TCP/IP host on the Internet, normally printed in decimal form (for example,

128.122.40.227). Part of the TCP/IP family of protocols, it describes the software that tracks the Internet address of nodes, routes outgoing

messages, and recognizes incoming messages.

Internet Service Provider (ISP) - a vendor who provides direct access to the Internet or a company that provides Internet access to other

companies and individuals.

Intrusion Detection System (IDS) - is a firewall, but together with deleting the dangerous packets or packets including intrusion attacks, IDS also

keeps information about dropped packets and the senders responsible for them.

IP address - also known as the Internet Address, is a unique 32-bit identifier for a specific TCP/IP host computer on a network. IP addresses are in

dotted decimal form, such as 192.168.10.26, with each of the four address fields assigned as many as 255 values.

IP address Mask - A range of IP addresses defined so that only machines with IP addresses within the range are allowed access to an internet

service. To mask a portion of the IP address, replace it with the asterisk wild card character (*). For example, 192.44.*.* represents every computer

on the internet with an IP address beginning with 192.44

IP Gatekeeper - defines the policies that govern a multimedia system such as dialing plans, user privileges, bandwidth consumption, and others.

The gatekeeper also provides the means to extract information from such a system for various purposes, e.g., billing information, users that are

logged in, etc. The gatekeeper is also a focal point for the introduction of supplementary services.

IP Gateway - most commonly, a network device that converts voice and fax calls, in real time, between the public switched telephone network

(PSTN) and an IP network. The main IP gateway functions include voice, fax, compression/decompression, packetization, call routing, and control

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Quadro Quadro4x Guide de l'utilisateur Page 42

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