Intel 05-2065-002 User Manual

Page of 48
IP Media Server (Global Call) Demo Guide — November 2003
43
Glossary
Codec: see COder/DECoder
COder/DECoder: A circuit used on Dialogic boards to convert analog voice data to digital and digital voice data 
to analog audio.
Computer Telephony (CT): Adding computer intelligence to the making, receiving, and managing of 
telephone calls.
DTMF: See Dual-Tone Multi-Frequency
Dual-Tone Multi-Frequency: A way of signaling consisting of a push-button or touch-tone dial that sends out a 
sound consisting of two discrete tones that are picked up and interpreted by telephone switches (either PBXs or 
central offices).
Emitting Gateway: called by a G3FE. It initiates IFT service for the calling G3FE and connects to a Receiving 
Gateway.
E1: The 2.048 Mbps digital carrier system common in Europe.
FCD file: An ASCII file that lists any non-default parameter settings that are necessary to configure a DM3 
hardware/firmware product for a particular feature set. The downloader utility reads this file, and for each 
parameter listed generates and sends the DM3 message necessary to set that parameter value.
Frame: A set of SCbus/CT bus timeslots which are grouped together for synchronization purposes. The period of 
a frame is fixed (at 125 µsec) so that the number of time slots per frame depends on the SCbus/CT bus data rate. In 
the context of DSP programming (e.g. DM3 component development), the period defined by the sample rate of the 
signal data.
G3FE: Group 3 Fax Equipment. A traditional fax machine with analog PSTN interface.
Gatekeeper: An H.323 entity on the Internet that provides address translation and control access to the network 
for H.323 Terminals and Gateways. The Gatekeeper may also provide other services to the H.323 terminals and 
Gateways, such as bandwidth management and locating Gateways.
Gateway: A device that converts data into the IP protocol. It often refers to a voice-to-IP device that converts an 
analog voice stream, or a digitized version of the voice, into IP packets. 
H.323: A set of International Telecommunication Union (ITU) standards that define a framework for the 
transmission of real-time voice communications through Internet protocol (IP)-based packet-switched networks. 
The H.323 standards define a gateway and a gatekeeper for customers who need their existing IP networks to 
support voice communications.
IAF: Internet Aware Fax. The combination of a G3FE and a T.38 gateway.
IFP: Internet Facsimile Protocol