3Com 5210 manual Appendix Glossary

134APPENDIX : GLOSSARY

IDE Integrated Drive Electronics—Standard interface to the hard disk drive on the PC.

IEC International Electrotechnical Commission—The international standards body for electrotechnology.

IIS Internet Information Server—Microsoft Windows NT web based server. It allows you to create control and manage a web site remotely.

IMT Inter-Machine Trunks—In the SS7 network, the IMT is the channel that carries the data to the SSP.

ISUP Intergrated Services Digital Network User Part —This is the control function of the SS7 protocol. It determines the call setup, administration, and call take down on the SS7 network. In the SS7 system with VoIP enabled, the ISUP commands are converted to SLAP commands.

I/O Input/Output

IP Internet Protocol—A set of instructions that controls the node addresses, routes the messages, and so on of the internet.

IP Telephony Manager IP Telephony Manager is a software application developed by CommWorks, a division of 3Com, that runs on a UNIX management station. This application remotely manages 3Com Network Application Cards (NACs) and Network Interface Cards (NICs) through a Network Management Card (NMC) installed on the CommWorks 5210 IP Telephony Platform.

ISA Industry Standard Architecture—The most common bus architecture on the motherboard of a MS-DOS based computer.

ISDN Integrated Service Digital Network—A system that provides simultaneous voice and high-speed data transmission through a single channel to the user. ISDN is an international standard for end-to-end digital transmission of voice, data, and signaling.

ITG Internet Telephony Gateway— A bridge between traditional circuit-switched telephony and the internet that extends the advantages of IP telephony to the standard telephone by digitizing the standard telephone signal (if it isn't already digital), significantly compressing it, packetizing it for the internet using Internet Protocol (IP,) and routing it to a destination over the internet.

ITU International Telecommunications Union—An organization established by the United Nations, of which almost every nation is a member. Its charter is to define standards for telegraphic and telephone equipment.

LAN Local Area Network—A short distance data communications network. Usually found within a building or a campus environment.

LCF Location Confirm—This is a call flow message.

LEC 1. Local Exchange Carrier—The telephone company servicing the local area. 2. Line Echo Canceler—A module placed on the line to keep the noise and vibration on the line to a minimum.

LED Light Emitting Diode—Semiconductor device that emits light. Status lights on hardware devices are typically LEDs.