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  • 专利说明
  • 权利要求
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    • 专利摘要:
    1519806 Trunking in TDM exchanges SIEMENS AG 13 Oct 1975 [14 Nov 1974] 41778/75 Heading H4K The switching network of a PCM t.d.m. exchange system employs four-wire switching and possesses multi-stage inverse grouping. In the first stage A 1-channel LF connection lines are arranged in groups, one such group being the lines AL111 to ALlvb. The groups are divided into subgroups, e.g. lines AL111 to AL11a. Each sub-group is characterized by a plurality of connection coupling circuits AS 111 each of which comprises a PCM codec NF/PCM, a PCM word register Z and a time channel switch ZS which is operated according to the transmission direction along line AL 111. The second stage B comprises a plurality of network modules M 1 each of which is assigned to one of the first stage groups. Each module comprises a multiplexer Mull, a demultiplexer Dem 1 and a store S1 which can be addressed for time slot conversion. A store may be assigned to a given multiplexer/demultiplexer pair as shown or respective stores may be allocated to such pairs, via a switching matrix, on a demand basis. The coupling circuits of each sub-group of stage A are connected by a t.d.m. line Lab 11 to the multiplexer and demultiplexer of a module. All the sub-groups of a given stage A group are connected to the same module by respective t.d.m. lines. The third stage C includes a further plurality of network modules Mc whose multiplexers and demultiplexers are connected to those of the second stage modules by intermediate t.d.m. lines Lbc.
    公开号:SU812198A3
    申请号:SU752189618
    申请日:1975-11-14
    公开日:1981-03-07
    发明作者:Ойлер Карл
    申请人:Сименс Аг (Фирма)；
    IPC主号:
    专利说明:

    set 7, and the time switch of the channels through a line with a temporary seal 8-1-8-n is connected to a switching stage, which consists of modules 9-ti switching fields, each of which contains an addressable storage 10 temporary switching, controlled by a holding set 11 and connected at the input with the multiplexer 12, and at the output with the demultiplexer 13, the other inputs and outputs of which are connected to the module 15-1 with a temporary seal via the intermediate lines 14-1-14-p with the following switching stage. In addition, single-subscriber lines 16-1-16-p are connected to the input of subscriber switching circuits.
    The proposed switching field works as follows.
    For the 1mmutation field shown in the drawing, this is a four-wire, having a multi-stage reverse grouping, switching the switching field for single-channel subscriber lines 16-1-16-n, connected to subscriber switching schemes, which through the switching grouping field are divided into groups and subgroups, the magnitude of which can be selected as the flow of messages in the individual lines occurs.
    In the case of single-channel subscriber lines x 16-1-16-n, we can talk about four-wire low-frequency (LF) -subscriber lines, which, if necessary, can also be connected via a fork scheme with a two-wire LF-subscriber line. A switching field is formed as a switching field with PCM and a time multiplex, which contains a certain number of subgroups 4 1-4-n subscriber switching circuits corresponding to a certain number of low-frequency subscriber lines 16-1-16-n connected in the switching field, which individually belong LF-subscriber line and have PCM-kbdek with PCM-register 5 and time switch channels 6, as shown in the drawing for the subscriber switching scheme 4-1-1 subgroups 4-1 subscriber switching schemes.
    In the drawing, for the subgroup 4-1-1 of the subscriber switching circuit, it is further indicated that the PCM-register 5, belonging to the PCM-codec, and the time switch of channels 6 can be controlled from the so-called holding (blocking) set 7 in the form of a cyclic storage device followed by a control decoder every time at the right time, corresponding to a time interval allocated to the corresponding connection, each subscriber switching scheme may have such a retention set, or it may even be provided dynes holding set, then making it possible to appropriately manage two simultaneous subscriber circuits for switching a whole subgroup subscriber switching circuits.
    Every time, subscriber circuits that form a subgroup are connected to a four-wire line with a temporary seal belonging to the corresponding subgroup.
    Similarly, in the switching field with PCM and time multiplexing shown in the drawing, a subgroup of 4-1 subscriber switching circuits is connected to a line with a temporary seal 8-1, a subgroup of 4-2 subscriber switching circuits is connected to a line with a temporary seal 8-, subgroup 4- 3 subscriber switching schemes - with a line with a temporary seal 8-3 and a subgroup of 4-n subscriber switching schemes - with a line with a temporary seal 8-p. Each of the four-wire lines with a temporary seal 8-1-8-p is connected on the one hand to the input of a multiplexer belonging to the corresponding subgroup 4-1-4-2, 4-3-4-n subscriber switching circuits, and on the other hand - With the output of the demultiplexer belonging to the corresponding group, one module of the switching field, switching stage 2, this module switching field contains the addressed temporary switching storage 10, which is connected on the one hand to the output of the multiplexer 12, and on the other hand to the input of the demultiplexer 13 directly or through a switching matrix connecting a number of multi / plexers (demultiplexers) with a number of addressable drives 10 time switching.
    So, in the switching field with PCM and time multiplexing shown in the drawing, the lines with temporary compaction 8-1 and 8-2 are connected on one side to the input of multiplexer 12 belonging to the subgroup- / - - subscriber switching circuits, and on the other hand - With the release of de-Multikeler 13, belonging to the subgroup LIKE 41-4-2 subscriber switching circuits; switching floor module
    9-1 contains, in this case, an addressable storage unit 10 of time switching, connected to the input side with the output of multiplexer 12, and from the output side to the input of the demultiplexer 13, which is addressed and controlled from the retention set // to convert the time positions. In a corresponding manner, in the switching field shown in the drawing, four-wire lines with an iM seal time of 8-3 and 8-p are connected to a correspondingly constructed switch field module.
    With the remaining inputs of the multiplexer 12 and the outputs of the demultiplexer 13 mode.
    l switching fields are connected (exactly
    same four-wire intermediate lines with temporary sealing, like an intermediate line with temporary sealing, 14-1-14-n, intermediate connecting lines with temporary sealing are connected to the module switching floor 9-1 of switching level 2. These intermediate lines are connected, in addition, on the one hand, with the input of the multiplexer, and on the other hand, with the output of the demultiplexer, the switching field module of the subsequent stage of the switching field module. So, in the drawing, for example, the intermediate line 14-1 with a temporary seal is thus connected to the module of the switching field 15-1 of the switching stage 3.
    The corresponding connecting paths take place in the switching field with PCM and temporary compression shown in the drawing, known mainly for switching fields with reversible grouping: subscriber lines that are connected through their 4-switching commutation circuitry 4-1-1-4- 1-n to the same. Research institutes with a temporary seal 8-1, i.e., which belong to the same subgroup of subscriber lines, can be connected to each other, if necessary, through a line with a temporary seal 8-1, i.e., a short path passing only within the subgroup of subscriber switching schemes. In this case, the time switch of the channels of one or another subscriber switching line causes crossing of the lines to switch the transmission direction. On the other hand, they, like subscriber lines that belong to the same group, but not to the same subgroup of subscriber lines, are connected to each other through temporary compressed lines belonging to the respective groups, and through the module field switching 9-1, belonging to the respective groups, subscriber lines. Connections between two subscriber lines that do not belong to the same group of subscriber lines pass through the corresponding line every time with a temporary seal 8-2-8-3 to the corresponding module of the switching field 9-1-9 - the switching stage 2 and from there further to the switching field module (for example, 15-1) switching stage 3, through the addressed storage unit 10 of the temporary switching of which the intermediate lines with a temporary seal used for the corresponding connection are intermittent. The ki are connected to each other at time intervals reserved for the corresponding connection.
    权利要求:
    Claims (1)
    [1]
    Invention Formula
    15
    A four-wire switching switching field with pulse-code modulation and temporal multiplexing with multi-stage reversing grouping for single-channel subscriber lines divided by grouping switching fields into groups and subgroups, in order to simplify the switching field.
    groups and subgroups of subscriber switching circuits are provided, each of which contains an PCM codec with an PCM register and a channel time switch, the control inputs of the channel time switch and the PCM register are connected to the corresponding outputs of the holding set, and the time switch of the channels through a line with a temporary seal belonging
    corresponding subgroup is connected to one switching stage, which consists of switching field modules belonging to individual groups, and each of which contains an addressable drive
    temporal switching, controlled by a retention kit and connected at the input to a multiplexer, and at the output - with a demultiplexer.
    The source of information taken into account in the examination:
    I. For the application of the Federal Republic of Germany No. 2309890, cl. 21 a, 46/10, 1972 (prototype).
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    同族专利:
    公开号 | 公开日
    BE835598A|1976-05-14|
    FR2291674B1|1981-06-19|
    SE403240B|1978-07-31|
    AU8597775A|1977-04-28|
    LU72812A1|1975-09-29|
    GB1519806A|1978-08-02|
    DE2454144B2|1977-04-14|
    IT1051373B|1981-04-21|
    JPS5173310A|1976-06-25|
    AT354527B|1979-01-10|
    FR2291674A1|1976-06-11|
    US4025725A|1977-05-24|
    SE7512841L|1976-05-17|
    CH593597A5|1977-12-15|
    NL7512664A|1976-05-18|
    JPS5619794B2|1981-05-09|
    DE2454144A1|1976-05-20|
    ATA651975A|1979-06-15|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    BE791917A|1971-11-25|1973-03-16|Post Office|IMPROVEMENTS TO ADIVISION MULTIPLEX TELECOMMUNICATION SYSTEMS OVER TIME|US4071888A|1977-02-16|1978-01-31|Bell Telephone Laboratories, Incorporated|Telephone multiline automatic voice answer system|
    US4201891A|1978-03-17|1980-05-06|International Telephone And Telegraph Corporation|Expandable digital switching network|
    US4201889A|1978-03-17|1980-05-06|International Telephone And Telegraph|Distributed control digital switching system|
    DE2819126C2|1978-04-29|1979-11-22|Telefonbau Und Normalzeit Gmbh, 6000 Frankfurt|Multi-level switching network with reverse grouping for a PCM switching system|
    WO1980000211A1|1978-06-30|1980-02-07|Waddleton N|Multiplex time division switching network unit of the"time-time"type|
    US4287590A|1979-06-25|1981-09-01|International Standard Electric Corporation|Time division multiplex communication system|
    GB2071462B|1980-03-04|1984-03-21|Standard Telephones Cables Ltd|Digital concentrator switch|
    US4355384A|1980-03-19|1982-10-19|Digital Switch Corporation|Non-blocking expandable switching matrix for a telecommunication system|
    FR2495413B1|1980-11-28|1988-02-19|Cochennec Jean Yves|SYSTEM FOR CONNECTING SUBSCRIBER LINES TO A TEMPORAL TELEPHONE SWITCH|
    JPH0454438B2|1983-03-31|1992-08-31|Hitachi Ltd|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE19742454144|DE2454144C3|1974-11-14|Four-wire switching, a multi-level reverse grouping having coupling field|
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