About: Line signaling

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Line signaling is a class of telecommunications signaling protocols. Line signaling is responsible for off-hook, ringing signal, answer, ground start, on-hook unidirectional supervision messaging in each direction from calling party to called party and vice versa. After an off-hook, line signaling initiates register signaling to accomplish the exchange of telephone numbers of called party and in more modern line-signaling protocols, the calling party as well. While register signaling occurs, line signaling remains quiescent unless the calling party goes on-hook or an abnormal cessation of the call occurs, such as due to equipment malfunction or shutdown or due to network outage upstream in that call-attempt's series of spanned trunks.

Attributes	Values
rdf:type	company yago:WikicatTelephonySignals yago:Abstraction100002137 yago:Communication100033020 yago:Signal106791372
rdfs:label	Line signaling (en) Sinalização acústica (pt)
rdfs:comment	A sinalização acústica em telefonia, consiste em uma série de sinais audíveis emitidos da central para o assinante.Como exemplos: tom de discar e tom de ocupado. (pt) Line signaling is a class of telecommunications signaling protocols. Line signaling is responsible for off-hook, ringing signal, answer, ground start, on-hook unidirectional supervision messaging in each direction from calling party to called party and vice versa. After an off-hook, line signaling initiates register signaling to accomplish the exchange of telephone numbers of called party and in more modern line-signaling protocols, the calling party as well. While register signaling occurs, line signaling remains quiescent unless the calling party goes on-hook or an abnormal cessation of the call occurs, such as due to equipment malfunction or shutdown or due to network outage upstream in that call-attempt's series of spanned trunks. (en)
dcterms:subject	Telephony signals
Wikipage page ID	2950225 (xsd:integer)
Wikipage revision ID	1122765829 (xsd:integer)
Link from a Wikipage to another Wikipage	E-carrier Telephony signals Telecommunications network Telephone number On-hook Pulse-code modulation Communications protocol Called party Calling party Digital Signal 1 Register signaling Robbed-bit signaling Telecommunications Ground start DS0 In-band signaling Trunking Superframe Off-hook Ringing signal Signaling (telecommunication)
sameAs	Line signaling Line signaling Line signaling Line signaling Line signaling
dbp:wikiPageUsesTemplate	dbt:Main dbt:Reflist dbt:Telecommunications dbt:Unreferenced
has abstract	Line signaling is a class of telecommunications signaling protocols. Line signaling is responsible for off-hook, ringing signal, answer, ground start, on-hook unidirectional supervision messaging in each direction from calling party to called party and vice versa. After an off-hook, line signaling initiates register signaling to accomplish the exchange of telephone numbers of called party and in more modern line-signaling protocols, the calling party as well. While register signaling occurs, line signaling remains quiescent unless the calling party goes on-hook or an abnormal cessation of the call occurs, such as due to equipment malfunction or shutdown or due to network outage upstream in that call-attempt's series of spanned trunks. Line signaling can be conveyed in a single DS0 channel of a trunk. In modern PCM telecommunications, line signaling is represented by the ABCD bits in DS0 #16 of an E1 or a selected DS0 within a T1. Line signaling can also be conveyed within the channels being supervised, as in the original T1 scheme which used one out of every eight bits for supervision, or with robbed bits of a superframe format, or as in-band signaling, e.g. as in L1 signaling where 2280 Hz tone pulses are used. (en) A sinalização acústica em telefonia, consiste em uma série de sinais audíveis emitidos da central para o assinante.Como exemplos: tom de discar e tom de ocupado. (pt)
gold:hypernym	Telecommunications
prov:wasDerivedFrom	wikipedia-en:Line_signaling?oldid=1122765829&ns=0
page length (characters) of wiki page	1681 (xsd:nonNegativeInteger)
foaf:isPrimaryTopicOf	wikipedia-en:Line_signaling
is Link from a Wikipage to another Wikipage of	On- and off-hook Number Five Crossbar Switching System Number One Electronic Switching System Analog telephone adapter Panel switch Supervision (telephony) Digital Signal 1 Register signaling Ringtone Robbed-bit signaling Signaling System No. 5 Automatic switching system In-band signaling Nominal impedance Signaling (telecommunications) Single-frequency signaling Signaling System No. 6 Signalling System R2 Line signalling
is Wikipage redirect of	Line signalling
is foaf:primaryTopic of	wikipedia-en:Line_signaling

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