WO1999038352A1 - Multiple-channel subscriber line card - Google Patents
Multiple-channel subscriber line card Download PDFInfo
- Publication number
- WO1999038352A1 WO1999038352A1 PCT/US1999/001372 US9901372W WO9938352A1 WO 1999038352 A1 WO1999038352 A1 WO 1999038352A1 US 9901372 W US9901372 W US 9901372W WO 9938352 A1 WO9938352 A1 WO 9938352A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- signals
- telecommunications
- channel unit
- wideband
- unit card
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/04—Selecting arrangements for multiplex systems for time-division multiplexing
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
- H04Q2213/13003—Constructional details of switching devices
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
- H04Q2213/13103—Memory
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
- H04Q2213/13106—Microprocessor, CPU
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
- H04Q2213/13292—Time division multiplexing, TDM
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
- H04Q2213/13299—Bus
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
- H04Q2213/1332—Logic circuits
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
- H04Q2213/13322—Integrated circuits
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
- H04Q2213/13381—Pair-gain system, digital loop carriers
Definitions
- a multiple-channel subscriber line card includes a subscriber bus interface for communicating subscriber bus signals with a digital loop carrier matrix, a mapping circuit for mapping between subscriber bus signals and wideband telecommunications signals, a plurality of spans for communicating wideband telecommumcations signals with an external network, and a processor node for controlling operation of the mapping circuit and the plurality of span interfaces.
- the spans can recover the wideband telecommunications signals from incoming signals received from the external network.
- the spans can perform framing and formatting functions for wideband telecommunications signals to be sent over the external network.
- the wideband telecommunications signals can comprise El or Tl signals.
- the digital loop carrier matrix can comprise a bandwidth, processor and timing (BPT) card.
- the wideband telecommunications signals can comprise El or Tl signals.
- FIG. 3 is a functional block diagram of a channel unit card.
- FIG. 4 is a functional block diagram of a span interface.
- FIG. 5 is a functional block diagram of a processor node.
- FIG. 6 is a functional block diagram of an application specific integrated circuit (ASIC).
- ASIC application specific integrated circuit
- an El card receives signals in the El format and remaps them into subscriber bus interface (SBI) format and vice versa.
- the El card includes an application specific integrated circuit (ASIC) 100 which serves as the standard El interface between a subscriber bus interface(SBI) 110, 108, a processor node 116, and a span interface 114.
- ASIC application specific integrated circuit
- "Span” refers to that portion of a high-speed digital system that connects one central office to another central office or one terminal office to another terminal office.
- Each card can support up to three El spans, utilizing up to either four single density SBIs or two double density SBIs.
- the card has an outbound SBI bus 102 and an inbound SBI bus 104 to transmit and receive El signals accordingly.
- the timeslot mux/demux block 412 maps the internal TDM paths, as shown in Fig. 6, using a combination of channel counters and software provisional control. For example, a customer's voice/data travels the path in the following order: El Proper 120, 122, El data 436, SBI data 438, and SBI proper 440.
- the signaling bus 434, 444, carrying El and SBI signaling bits, and the communications bus 130, 442, carrying the El and SBI communications bits are inserted translated as needed.
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Telephonic Communication Services (AREA)
- Interface Circuits In Exchanges (AREA)
- Time-Division Multiplex Systems (AREA)
- Sub-Exchange Stations And Push- Button Telephones (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP99904201A EP1051877A1 (en) | 1998-01-27 | 1999-01-21 | Multiple-channel subscriber line card |
AU24651/99A AU2465199A (en) | 1998-01-27 | 1999-01-21 | Multiple-channel subscriber line card |
JP2000529103A JP2002502167A (en) | 1998-01-27 | 1999-01-21 | Multi-channel subscriber line card |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US1442798A | 1998-01-27 | 1998-01-27 | |
US09/014,427 | 1998-01-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1999038352A1 true WO1999038352A1 (en) | 1999-07-29 |
Family
ID=21765423
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US1999/001372 WO1999038352A1 (en) | 1998-01-27 | 1999-01-21 | Multiple-channel subscriber line card |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1051877A1 (en) |
JP (1) | JP2002502167A (en) |
AU (1) | AU2465199A (en) |
TW (1) | TW407414B (en) |
WO (1) | WO1999038352A1 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001091506A1 (en) * | 2000-05-21 | 2001-11-29 | Surf Communication Solutions, Ltd. | Back-to-back modem repeater |
US7355735B1 (en) | 2000-06-14 | 2008-04-08 | Yona Sivan | Real time fax over packet based network |
US7406072B1 (en) | 2000-05-21 | 2008-07-29 | Surf Communication Solutions | Modem relay over packet based network |
US7420960B2 (en) | 2000-05-21 | 2008-09-02 | Surf Communication Solutions Ltd. | Modem relay over packet based network |
US7420961B2 (en) | 2000-06-14 | 2008-09-02 | Abraham Fisher | Distributed modem |
US9432124B2 (en) | 2014-09-16 | 2016-08-30 | Mitsubishi Electric Research Laboratories, Inc. | Inter-channel interference management for optical super-channels |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4993019A (en) * | 1989-12-15 | 1991-02-12 | Alcatel Na | Line unit interface circuit |
US5355362A (en) * | 1992-10-26 | 1994-10-11 | Nec America, Inc. | Digital loop carrier system |
WO1998000941A1 (en) * | 1996-06-28 | 1998-01-08 | Alcatel Usa Sourcing, L.P. | Apparatus and method for mapping e1 telecommunications signals onto a subscriber bus |
WO1998000942A1 (en) * | 1996-07-01 | 1998-01-08 | Dsc Telecom L.P. | Apparatus and method for mapping e1 signals into a digital cross-connect matrix space |
-
1999
- 1999-01-21 EP EP99904201A patent/EP1051877A1/en not_active Withdrawn
- 1999-01-21 JP JP2000529103A patent/JP2002502167A/en not_active Withdrawn
- 1999-01-21 AU AU24651/99A patent/AU2465199A/en not_active Abandoned
- 1999-01-21 WO PCT/US1999/001372 patent/WO1999038352A1/en not_active Application Discontinuation
- 1999-02-06 TW TW88101924A patent/TW407414B/en not_active IP Right Cessation
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4993019A (en) * | 1989-12-15 | 1991-02-12 | Alcatel Na | Line unit interface circuit |
US5355362A (en) * | 1992-10-26 | 1994-10-11 | Nec America, Inc. | Digital loop carrier system |
WO1998000941A1 (en) * | 1996-06-28 | 1998-01-08 | Alcatel Usa Sourcing, L.P. | Apparatus and method for mapping e1 telecommunications signals onto a subscriber bus |
WO1998000942A1 (en) * | 1996-07-01 | 1998-01-08 | Dsc Telecom L.P. | Apparatus and method for mapping e1 signals into a digital cross-connect matrix space |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001091506A1 (en) * | 2000-05-21 | 2001-11-29 | Surf Communication Solutions, Ltd. | Back-to-back modem repeater |
US7230977B1 (en) | 2000-05-21 | 2007-06-12 | Surf Communication Solutions Ltd. | Back-to-back modem repeater |
US7406072B1 (en) | 2000-05-21 | 2008-07-29 | Surf Communication Solutions | Modem relay over packet based network |
US7420960B2 (en) | 2000-05-21 | 2008-09-02 | Surf Communication Solutions Ltd. | Modem relay over packet based network |
US7355735B1 (en) | 2000-06-14 | 2008-04-08 | Yona Sivan | Real time fax over packet based network |
US7420961B2 (en) | 2000-06-14 | 2008-09-02 | Abraham Fisher | Distributed modem |
US9432124B2 (en) | 2014-09-16 | 2016-08-30 | Mitsubishi Electric Research Laboratories, Inc. | Inter-channel interference management for optical super-channels |
Also Published As
Publication number | Publication date |
---|---|
AU2465199A (en) | 1999-08-09 |
JP2002502167A (en) | 2002-01-22 |
TW407414B (en) | 2000-10-01 |
EP1051877A1 (en) | 2000-11-15 |
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