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• Remote_concentrator abstract "In modern telephony a remote concentrator, remote concentrator unit (RCU), or remote line concentrator (RLC) is a concentrator at the lowest level in the telephone switch hierarchy.Subscribers' analogue telephone/PSTN lines are terminated on concentrators. They have three main functions, namely: Digitize, that is, turn voice, and sometimes data, from analogue into a digital form. Connect off-hook lines through to the local exchange — the concentration function. Multiplex, interleaving many calls together on a single wire or optical fiber.Only a few hundred telephone lines attach to each remote concentrator. In North America concentrators are located in an SAI or other enclosure in each neighborhood. In Europe the buildings which once contained local Strowger switch telephone exchanges are now usually empty except for a remote concentrator.Only call packets from or destined to a phone serviced by the concentrator actually are processed by the concentrator — nonlocal phones' time slots just pass through the concentrator unchanged. If the concentrator malfunctions, a fail-safe relay connects the \"in\" wires to the \"out\" wires, and nonlocal phones detect no difference. The central switch periodically counts concentrators, and schedules maintenance, probably before users notice the failure. Concentrators for several hundred customers can be threaded on this loop like pearls.The interface between remote concentrators and their parent telephone switches has been standardised by ETSI as the V5 protocol.When a user picks up their phone, the concentrator produces the dial tone. When the user dials, it reads the tones. Once the user has completed dialing, the concentrator's microcomputer sends the dialing data to the central switch, which allocates a time slot for the dialing phone on the wire pairs that pass through the concentrator and through the switch. After the central switch tells the concentrator which time slot to use, the concentrator \"opens\" a time-slot on the loop to a local phone. The allocated time slot on the wiring into the concentrator is used to send data from the remote telephone's microphone to the local telephone's speaker. The allocated time slot on the wiring out of the concentrator (with the same time slot number) carries data from the local microphone to the remote speaker.To arrange a connection, the switch just completes the circle between the user's phone and the remote phone. It interchanges the data from one to the other. In this limited sense, telephone \"exchange\" is exactly correct terminology.".
• Remote_concentrator thumbnail VZ_SAI_workers_Secaucus_jeh.JPG?width=300.
• Remote_concentrator wikiPageID "61136".
• Remote_concentrator wikiPageLength "4155".
• Remote_concentrator wikiPageOutDegree "21".
• Remote_concentrator wikiPageRevisionID "684074545".
• Remote_concentrator wikiPageWikiLink Access_network.
• Remote_concentrator wikiPageWikiLink Asymmetric_digital_subscriber_line.
• Remote_concentrator wikiPageWikiLink Category:Local_loop.
• Remote_concentrator wikiPageWikiLink Concentrator.
• Remote_concentrator wikiPageWikiLink Dial_tone.
• Remote_concentrator wikiPageWikiLink Digital_subscriber_line_access_multiplexer.
• Remote_concentrator wikiPageWikiLink Distributed_switching.
• Remote_concentrator wikiPageWikiLink ETSI.
• Remote_concentrator wikiPageWikiLink Enclosure_(electrical).
• Remote_concentrator wikiPageWikiLink Local_loop.
• Remote_concentrator wikiPageWikiLink Network_packet.
• Remote_concentrator wikiPageWikiLink Pair_gain.
• Remote_concentrator wikiPageWikiLink Public_switched_telephone_network.
• Remote_concentrator wikiPageWikiLink Remote_Digital_Terminal.
• Remote_concentrator wikiPageWikiLink Serving_area_interface.
• Remote_concentrator wikiPageWikiLink Strowger_switch.
• Remote_concentrator wikiPageWikiLink Telephone_exchange.
• Remote_concentrator wikiPageWikiLink Telephone_line.
• Remote_concentrator wikiPageWikiLink Telephony.
• Remote_concentrator wikiPageWikiLink V5_interface.
• Remote_concentrator wikiPageWikiLink File:VZ_SAI_workers_Secaucus_jeh.JPG.
• Remote_concentrator wikiPageWikiLinkText "Remote concentrator".
• Remote_concentrator wikiPageWikiLinkText "concentration".
• Remote_concentrator wikiPageWikiLinkText "remote concentrator".
• Remote_concentrator wikiPageUsesTemplate Template:Citation_needed.
• Remote_concentrator wikiPageUsesTemplate Template:Refimprove.
• Remote_concentrator wikiPageUsesTemplate Template:Reflist.
• Remote_concentrator subject Category:Local_loop.
• Remote_concentrator hypernym Concentrator.
• Remote_concentrator type Circuit.
• Remote_concentrator comment "In modern telephony a remote concentrator, remote concentrator unit (RCU), or remote line concentrator (RLC) is a concentrator at the lowest level in the telephone switch hierarchy.Subscribers' analogue telephone/PSTN lines are terminated on concentrators. They have three main functions, namely: Digitize, that is, turn voice, and sometimes data, from analogue into a digital form. Connect off-hook lines through to the local exchange — the concentration function.".
• Remote_concentrator label "Remote concentrator".
• Remote_concentrator sameAs Q7312137.
• Remote_concentrator sameAs RSU.
• Remote_concentrator sameAs m.0glcc.
• Remote_concentrator sameAs Q7312137.
• Remote_concentrator wasDerivedFrom Remote_concentrator?oldid=684074545.
• Remote_concentrator depiction VZ_SAI_workers_Secaucus_jeh.JPG.
• Remote_concentrator isPrimaryTopicOf Remote_concentrator.