AU700045B2 - Telecommunications network terminating unit - Google Patents

Telecommunications network terminating unit Download PDF

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Publication number
AU700045B2
AU700045B2 AU33015/95A AU3301595A AU700045B2 AU 700045 B2 AU700045 B2 AU 700045B2 AU 33015/95 A AU33015/95 A AU 33015/95A AU 3301595 A AU3301595 A AU 3301595A AU 700045 B2 AU700045 B2 AU 700045B2
Authority
AU
Australia
Prior art keywords
network
terminating equipment
termination
terminal
equipment
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
AU33015/95A
Other versions
AU3301595A (en
Inventor
Bagher Aschrafi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Alcatel Lucent NV
Original Assignee
Alcatel NV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Alcatel NV filed Critical Alcatel NV
Publication of AU3301595A publication Critical patent/AU3301595A/en
Application granted granted Critical
Publication of AU700045B2 publication Critical patent/AU700045B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • H04Q11/0428—Integrated services digital network, i.e. systems for transmission of different types of digitised signals, e.g. speech, data, telecentral, television signals
    • H04Q11/0435—Details
    • H04Q11/0471—Terminal access circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M19/00—Current supply arrangements for telephone systems
    • H04M19/08—Current supply arrangements for telephone systems with current supply sources at the substations
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/08—Power supply
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/1308—Power supply
    • 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
    • H04Q2213/13202—Network termination [NT]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13209—ISDN
    • 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
    • H04Q2213/23—Partyline

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Telephonic Communication Services (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Description

01- P//0 128/5/91 Regulation 3.2
AUSTRALIA
Patents Act 1990
ORIGINAL
COMPLETE SPECIFICATION STANDARD PATENT .a I I *aa I aIsles
I
I a .1 II a I a a 5 sa# a a a v a at a.
a a 1*51 Invention Title: "TELECOMMUNICATION NET WORK TERMINATING UNIT" The following statement is a full description of this invention, including the best method of performing it known to us: 2 This invention relates to a network terminating equipment for connecting at least one subscriber terminal to a telecommunication network, comprising a network termination and at least one terminal line by which the at least one subscriber terminal is connectable to the network termination.
A network terminating equipment for the ISDN main line is described in the article "Economical Access to ISDN" from the telecom report 12 (1989), issue 1-2, pages 14-17. The network terminating equipment comprises a DC voltage converter to feed the internal circuits and to provide an emergency distribution voltage, as well as a local area supply to feed terminal equipment via the S 0 bus. The local area supply has a 220 Volt input, which is fed from a power source located at the subscriber end. The network terminating equipment must therefore be installed at and connected to a 220 volt outlet at the subscriber.
It is an objedct of the invention to supply a network terminating equipment which enables network terminations to be installed and/or manufactured with less technical expenditure.
According to the invention, there is provided a network terminating equipment of the aforementioned type, wherein the at least one terminal line can be powered via a separate power supply which is independent of the network termination.
A particular advantage of the invention is that with a network termination :2d designed for several subscribers, the supply for the terminals of the individual *4*.t subscribers is conducted separately.
In order that the invention may be readily carried into effect, embodiments i' thereof will now be described in relation to the accompanying drawings, in which: S.Figure 1 a schematic display of a first practical example of a network S terminating equipment according to the invention Figure 2 a schematic display of a second practical example of a network S terminating equipment according to the invention.
The two practical examples of the invention are now described with the help of Figures 1 and 2. Both practical examples show an integrated services digital network ISDN as the telecommunication network. The invention can also be implemented with r a network other than an ISDN.
Figure 1 shows the first practical example of a network terminating equipment NTE of a telecommunication network according to the invention. The network terminating equipment NTE comprises a network termination NT, a terminal line BUS with telecommunication connection units TAE and an AC/DC -converter AC/DC.
The network termination NT has an Uo-interface U 0 and an So.interface S0, which are connected via an internal bus IBUS, and therefore corresponds with the basic-access configuration for the ISDN. The U 0 interface U 0 is furthermore connected, via branch cable VK, with a front-end equipment not shown. The So.
interface So, is connected to the terminals TEl, TE2 of a subscriber TN via the terminal line BUS. The network termination NT further comprises a DC/DC converter DC/DC, a switch S and a voltage control unit APS. The DC/DC-converter DC/DC receives its input DC voltage by remote supply via the branch cable VK. It supplies the U 0 interface U 0 and the So.interface S o with power and supplies an emergency distribution voltage The voltage control unit APS monitors the voltage at the terminal line BUS and controls the position of switch S. The emergency distribution voltage of the DC/DCconverter DC/DC serves as emergency supply of a subscriber terminal in the case of a distribution voltage failure on the terminal line BUS detected by the voltage control unit APS. It is switched to the terminal line BUS by switch S which is triggered by the voltage control unit APS.
The terminal line BUS is an S o bus BUS in the practical example. It connects S.1 subscriber terminals TEl, TE2 with the So.interface S 0 The So.Bus BUS comprises U. telecommunication connection units TAE to conned subscriber terminals TEl, TE2. A random telecommunication connection unit TAE is connected with the AC/DC converter AC/DC. The AC/DC converter is arranged outside of the network termination NT. It has an AC input voltage and a DC output voltage. The AC input voltage is a voltage in the 220 230 V range, which is supplied by subscriber TN.
l. For this reason, the AC/DC-converter AC/DC is installed at the subscriber TN premises. The DC output voltage is in the 40 volt range -20% accord. to CCITT I 430) and supplies approx. 4.5 watt. It is switched to the So.bus BUS via a 4 telecommunication connection unit TAE and is used to supply at least one subscriber terminal TEl, TE2. Only in the case of a failure of the DC output voltage of the AC/DC-converter AC/DC will a subscriber terminal receive emergency supply from the DC/DC- converter DC/DC of the network termination NT, and where the DC/DC converter is activated by the voltage control equipment APS.
Figure 2 shows a second network terminating equipment NTE of a telecommunication network, according to the invention. The network terminating equipment NTE comprises a network termination NT, two terminal lines BUS 1, BUS 2, with telecommunication connection units TAE and two AC/DC-converters AC/DC1, AC/DC2.
The network termination NT comprises a Uo-interface Uo, two So.interfaces Sol, So2 and a control unit CPU, which are interconnected via an internal bus IBUS. The Uo.interface Uo is furthermore connected, via a branch cable VK, to a front-end equipment not shown. The So.interfaces Sol, S 0 2 are connected with the terminals TE 1, TE 21 of two subscribers TN1, TN2 via separate terminal lines BUS 1, BUS2.
Two B-channels (64 kbit/s each) and one D-channel (16 k/bit) are available for transmission of digital information, resp. signalling at the Uo.interface U o The control unit CPU distributes the two B-channels to the two So.interfaces, so that each subscriber TN1, TN2 has one B-channel available for transmission. The network termination NT further comprises a DC/DC converter DC/DC, two switches S1, S2 'I and two voltage control units APS1, APS2. The DC/DC-converter DC/DC receives its 4 DC input voltage by remote supply via branch cable VK. It supplies the Uo.interface Uo, the two So.interfaces Sol, So2, and the control unit CPU with power and makes two emergency distribution voltages available. As in the case of network termination :925: NT in Figure 1, the emergency distribution voltages are switched to the corresponding o" terminal lines BUS1, BUS 2 by switches S1, S2 which are triggered by the voltage control units APS1, APS2 when the distribution voltage fails in one of the terminal lines BUS 1, BUS2.
to
A
ml **w In the practical example the terminal lines BUS1, BUS2, are So-buses. They connect the subscriber terminals TEl 1, TE21 with the corresponding So interface Sol, So2. Each So-Bus Sol, So2 is equipped with telecommunication connection units TAE for the connection of subscriber terminals. On each So-bus Sol, So2, a random telecommunication connedion unit TAE is conneded with an AC/DC converter AC/DC1, AC/DC2. The AC/DC converters AC/DC1, AC/DC2 are arranged outside of the network termination NT. They have an AC input voltage and a DC output voltage. The AC input voltage is a voltage in the 220 -230 volt range, which is supplied by the corresponding subscriber. For this reason, the AC/DC converters AC/DC1, AC/DC2 are located at the premises of subscribers TN 1, TN2. The DC output voltage is in the 40 volt range and supplies approx. 4.5 Watt. It is switched to the appropriate SO-Bus BUS1, BUS2 via a telecommunications connection unit TAE and is used to supply at least one subscriber terminal TEl 1, TE21. Only in the case of a failure of the DC output voltage of one and/or the other AC/DC converter AC/DC1, AC/DC2 will one terminal per subscriber receive emergency supply from the DC/DC-converter DC/DC of the network termination. The two subscriber terminals TEl 1, TE21 can be supplied with emergency supply independently of each other via the two voltage control units APS1 and APS2.
In the practical examples, the network terminations are arranged outside of the i: 20 subscriber premises. This has the advantage, that several network terminations of S different subscribers can be arranged at a central location, which can result in further technical simplifications of the circuit for the individual network terminations. The B network terminations can also as previously, be arranged within the subscriber premises. It is however no longer necessary to conned them to a 230 Volt outlet.
'225; When using this allocation, it is ensured that network termination NT remains in the network range up to the S o interface So and that the services of the network operator are no longer necessary for the AC/DC-converter AC/DC. This makes the supply costs for the network terminations lower for the network operator.
a tt S *4J4 ti 7 1. 1 1 1111 I- I ft 6 In both practical examples an AC/DC converter is used to feed at least one subscriber terminal TE. Instead of an AC/DC-converter, any power supply can now be used.
For example, the already available power supply of a fax or a printer can be used to supply the 40 volt DC voltage on the terminal line BUS to supply one or more subscriber terminals, e.g. ISDN terminals analog or digital telephones.
I
4 t4 I* t
S
t *f i s

Claims (11)

1. Network terminating equipment for connecting at least one subscriber terminal to a telecommunication network, comprising a network termination and at least one terminal line by which the at least one subscriber terminal is connectable to the network termination, wherein the at least one terminal line can be powered via a separate power supply which is independent of the network termination.
2. Network terminating equipment as claimed in claim 1, wherein the power supply is connectable to the associated terminal line via a telecommunication connection unit.
3. Network terminating equipment as claimed in claim 1, wherein the telecommunication network is an integrated services digital network, and wherein the network termination is a network termination for the basic-access configuration with an So interface, the terminal line being an So bus.
4. Network terminating equipment as claimed in claim 1, wherein the 1 5 telecommunication network is an integrated services digital network, the network termination having two So, interfaces, and the terminal lines being So buses.
Network terminating equipment as claimed in claim 4, wherein the network terminating equipment includes a control unit, which includes means for transmitting frame-structured information, in the form of a network-side frame containing two or more information-carrying channels and at least one signalling channel, only a part of the information-carrying channels available on the network side being assignable by the control unit to the So interfaces according to a predetermined distribution.
6. Network terminating equipment as claimed in claim 1, wherein the power supply contains an AG/DC converter.
7. Network terminating equipment ais claimed in claim 6, wherein the AC voltage is in the 220-230 v range.
8. Network terminating equipment as claimed in claim 6, wherein the DC voltage is in the 40-V range.
9. Network terminat'ing equipment as claimed in claim 1, wherein the network termination is spatially separated from the subscriber equipment.
Network terminating equipment as claimed in claim 1, wherein the power supply forms part of a subscriber terminal.
11. Network terminating equipment substantially as herein described with reference to Figures 1 2 of the accompanying drawings. DATED THIS TWENY-EIGHTH DAY OF OCTOBER 1998 ALCATEL N.V. SQ S S 0 *S505S 0 5555 C 0 5055 Sc S S S 0 *c n S S S 55 S 55 CS *55055 S *500SS o 55 A 5 5S S I \N4
AU33015/95A 1994-10-18 1995-10-03 Telecommunications network terminating unit Ceased AU700045B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4437215 1994-10-18
DE19944437215 DE4437215A1 (en) 1994-10-18 1994-10-18 Network termination device of a telecommunications network

Publications (2)

Publication Number Publication Date
AU3301595A AU3301595A (en) 1996-05-02
AU700045B2 true AU700045B2 (en) 1998-12-17

Family

ID=6531076

Family Applications (1)

Application Number Title Priority Date Filing Date
AU33015/95A Ceased AU700045B2 (en) 1994-10-18 1995-10-03 Telecommunications network terminating unit

Country Status (3)

Country Link
EP (1) EP0708575A3 (en)
AU (1) AU700045B2 (en)
DE (1) DE4437215A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19638268A1 (en) * 1996-09-19 1998-04-02 Deutsche Telekom Ag Electrical power supply system for analogue terminal
DE19750863C2 (en) * 1997-11-10 2000-06-29 Deutsche Telekom Ag Method and circuit arrangement for supplying power to bus-powered ISDN terminals
DE19756438A1 (en) 1997-12-18 1999-06-24 Cit Alcatel Arrangement for wired digital message transmission
DE19938124C1 (en) * 1999-08-12 2001-07-19 Siemens Ag Method for managing the energy transmitted from a central network component via a line to a decentralized network component and network termination device
SE9903476L (en) * 1999-09-24 2001-03-25 Ericsson Telefon Ab L M Device and method relating to power supply in a communication network

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4984267A (en) * 1990-01-29 1991-01-08 Nynex Corporation Backup power supply at subscriber terminal
DE4203477A1 (en) * 1992-02-07 1993-08-12 Bosch Telecom Emergency operation circuitry for communication terminal devices - forms direct connection between mains and device with digital line when device current supply fails

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3316470A1 (en) * 1983-05-05 1984-11-08 Siemens AG, 1000 Berlin und 8000 München CIRCUIT ARRANGEMENT FOR A SUBSCRIBER CONNECTION IN A SERVICE-INTEGRATING DIGITAL NETWORK (ISDN)
DE3706253A1 (en) * 1987-02-26 1988-09-08 Siemens Ag Circuit arrangement for telecommunications systems, in particular telephone switching systems, with DC voltage feed of switching devices via connection lines
DE4038749C1 (en) * 1990-12-05 1992-02-20 Bosch Telecom Oeffentliche Vermittlungstechnik Gmbh, 6236 Eschborn, De Subscriber peripheral circuit for ISDN - has coupling device to connect one of subscriber peripherals to digital network line
DE4204517C2 (en) * 1991-06-25 1994-02-24 Rutenbeck Wilhelm Gmbh & Co Microprocessor controlled telecommunication device
DE4124118A1 (en) 1991-07-18 1993-01-21 Entwicklungs Und Vertriebsgese Communications network with local exchange connected to integrated services digital network - has multiplexer between analogue subscribers and two-wire terminal coupled to digital exchange
DE4206426C1 (en) * 1992-02-29 1993-01-14 Neumann Elektronik Gmbh, 4330 Muelheim, De
DE4405037A1 (en) * 1994-02-17 1995-08-24 Sel Alcatel Ag Network and apron termination device of a telecommunications network

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4984267A (en) * 1990-01-29 1991-01-08 Nynex Corporation Backup power supply at subscriber terminal
DE4203477A1 (en) * 1992-02-07 1993-08-12 Bosch Telecom Emergency operation circuitry for communication terminal devices - forms direct connection between mains and device with digital line when device current supply fails

Also Published As

Publication number Publication date
EP0708575A3 (en) 1999-09-22
DE4437215A1 (en) 1996-04-25
EP0708575A2 (en) 1996-04-24
AU3301595A (en) 1996-05-02

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MK14 Patent ceased section 143(a) (annual fees not paid) or expired