Grandstream Networks GXW-410xv Manuel D’Utilisation

ADSL  Asymmetric Digital Subscriber Line: Modems attached to twisted pair copper wiring that transmit 
from 1.5 Mbps to 9 Mbps downstream (to the subscriber) and from 16 kbps to 800 kbps upstream, 
depending on line distance. 
 
AGC  Automatic Gain Control is an 

electronic

 

system

 found in many types of devices. Its purpose is to 

control the 

gain

 of a system in order to maintain some measure of performance over a changing range of 

real world conditions. 
 
ARP  Address Resolution Protocol is a protocol used by the 

Internet Protocol (IP)

 [

RFC826]

, specifically 

IPv4, to map 

IP network addresses

 to the hardware addresses used by a data link protocol. The protocol 

operates below the network layer as a part of the interface between the OSI network and OSI link layer. It 
is used when 

IPv4 is used over Ethernet

 
ATA  Analogue Telephone Adapter. Covert analogue telephone to be used in data network for VoIP, like 
Grandstream HT series products. 
 
CODEC  Abbreviation for Coder-Decoder. It's an analog-to-digital (A/D) and digital-to-analog (D/A) 
converter for translating the signals from the outside world to digital, and back again. 
 
CNG  Comfort Noise Generator, generate artificial background 

noise

 used in 

radio

 and 

wireless

 

communications to fill the 

silent

 time in a transmission resulting from 

voice activity detection

. 

DATAGRAM  A data packet carrying its own address information so it can be independently routed from 

ons of a signal in order to reduce the amount of information to be encoded or 

ompressed. Lossy compression algorithms ordinarily decimate while sub-sampling. 

andard Institute from 1988, governing pan-European digital mobile telephony. 

ECT covers wireless PBXs, telepoint, residential cordless telephones, wireless access to the public 

nd twelve full-duplex accesses per carrier, for a total 

f 120 possible combinations. A DECT base station (an RFP, Radio Fixed Part) can transmit all 12 

ted from the RFP within a multi-frame (16 frames). Voice signals are 

igitally encoded into a 32 Kbit/s signal using Adaptive Differential Pulse Code Modulation.  

its source to the destination computer 
 
DECIMATE  To discard porti
c
 
DECT  Digital Enhanced Cordless Telecommunications: A standard developed by the European 
Telecommunication St
D
switched telephone network, Closed User Groups (CUGs), Local Area Networks, and wireless local loop. 
The DECT Common Interface radio standard is a multi-carrier time division multiple access, time division 
duplex (MC-TDMA-TDD) radio transmission technique using ten radio frequency channels from 1880 to 
1930 MHz, each divided into 24 time slots of 10ms, a
o
possible accesses (time slots) simultaneously by using different frequencies or using only one frequency. 
All signaling information is transmit
d
 
DNS  Short for Domain Name System (or Service or Server), an 

Internet

 service that translates 

 into IP addresses 

going 

rough an attendant or auto-attendant.  

lized CPU used for digital signal processing.  Grandstream 

roducts all have DSP chips built inside. 

nals for dialing 

sing in-band signaling. The standards define 16 tone-pairs (0-9, #, * and A-F) although most terminals 

 
DID  Direct Inward Dialing.  The ability for an outside caller to dial to a PBX extension without 
th
 
DSP  Digital Signal Processor. A specia
p
 
DTMF  Dual Tone Multi Frequency.  The standard tone-pairs used on telephone termi
u
support only 12 of them (0-9, * and #).  
 

Grandstream Networks, Inc. 

GXW-410xv User’s Manual 

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