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ISDN
Communications
Q.931
Q.931 is an ISDN connection control protocol, roughly comparable to TCP in the Internet protocol stack. Q.931 doesn’t provide flow...
Webopedia Staff
Communications
QSIG
Short for [Q (point of the ISDN model) Signaling]. QSIG is a common channel signaling protocol based on ISDN Q.931...
Vangie Beal
Definitions
PaDSL – Private Access DSL
Acronym for “Private Access DSL”. PaDSL is a solution for creating secure private broadband VPNs (virtual private network). PaDSL is...
Webopedia Staff
Communications
Set-Top Box
Often abbreviated STB, an electronic device that is connected to a communication channel, such as a phone, ISDNor cable television...
Webopedia Staff
Communications
D-Channel
Short for Delta-channel, the channel in an ISDN connection that carries control and signaling information. Basic Rate ISDN (BRI) service...
Webopedia Staff
Communications
2B1Q
Short for 2 Binary 1 Quaternary, a full duplex physical layer encoding method used in ISDN and other digital communication...
Webopedia Staff
Definitions
1xRTT
Short for single carrier (1x) radio transmission technology, a 3G wireless technology based on the CDMA platform. 1xRTT has the...
Webopedia Staff
Communications
ICS – Internet connection sharing
Internet connection sharing (ICS) is a method for connecting multiple computers in a LAN to the Internet through a single...
Webopedia Staff
Definitions
MLPPP
Short for MultiLink PPP, an extension of the PPP that allows the B-channels of ISDN lines to be used in...
Webopedia Staff
Communications
CO – central office
CO is short for central office. In telephony, a CO is a telecommunications office centralized in a specific locality to...
Webopedia Staff
Communications
Local Loop
In telephony, a local loop refers to the connection between a telecommunication company’s CO to the lines in the service...
Webopedia Staff
Definitions
G.SHDSL
Also known as G.991.2, G.SHDSL is an international standard for symmetric DSL developed by the ITU. G.SHDSL provides for sending...
Webopedia Staff
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