1. CPC Sections
  2. CPC Section H
  3. CPC Class H04
  4. CPC Subclass H04Q
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CPC
COOPERATIVE PATENT CLASSIFICATION
​​
H04Q
SELECTING (switches, relays, selectors H01H; wireless communication networks H04W) [2021-08]
NOTES

  • This subclass covers:
    • methods, circuits, or apparatus for stablishing selectively a connect ion between a desired number of stations (normally two), or between a main station and a desired number of substations (normally one) for the purpose of transferring information via this connection after it has been established;
    • selective calling arrangements over connections already established.
    In either case, the connection may be made by means of electric conductors or electromagnetic waves.
  • In this subclass, the following terms or expressions are used with the meanings indicated:
    • "subscriber" is a general term for terminal equipment, e.g. telephone for public use;
    • "substation" means a subscriber or monitoring equipment which may connect a single subscriber to a line without choice as to subscriber;
    • "satellite" is a kind of exchange the operation of which depends upon control signals received from a supervisory exchange;
    • "switching centres" includes exchanges and satellites.
WARNING

  • In this subclass non-limiting references (in the sense of paragraph 39 of the Guide to the IPC) may still be displayed in the scheme.
H04Q 1/00
Details of selecting apparatus or arrangements [2021-08]
H04Q 1/02
.
Constructional details [2013-01]
H04Q 1/021
. .
{using pivoting mechanisms for accessing the interior of the apparatus} [2013-01]
H04Q 1/023
. .
{using sliding mechanisms for accessing the interior of the apparatus} [2013-01]
H04Q 1/025
. .
{Cabinets} [2013-01]
H04Q 1/026
. . .
{characterized by door details} [2013-01]
H04Q 1/028
. .
{Subscriber network interface devices} [2021-08]
H04Q 1/03
. .
{Power distribution arrangements} [2013-01]
H04Q 1/032
. . .
{power failure protection} [2013-01]
H04Q 1/035
. .
{Cooling of active equipments, e.g. air ducts} [2013-01]
H04Q 1/04
. .
Frames or mounting racks for selector switches; Accessories therefor, e.g. frame cover [2013-01]
H04Q 1/06
. .
Cable ducts or mountings specially adapted for exchange installations [2021-08]
H04Q 1/062
. . .
{vertical management arrangements} [2013-01]
H04Q 1/064
. . .
{horizontal management arrangements} [2013-01]
H04Q 1/066
. . .
{arranged on the front side} [2013-01]
H04Q 1/068
. . .
{arranged on the rear side} [2013-01]
H04Q 1/08
. .
Frames or mounting racks for relays; Accessories therefor [2013-01]
H04Q 1/09
. .
{Frames or mounting racks not otherwise provided for} [2013-01]
H04Q 1/10
. .
Exchange station construction [2013-01]
H04Q 1/11
. .
{Protection against environment} [2013-01]
H04Q 1/112
. . .
{mechanical protection, e.g. resistance to earthquakes} [2013-01]
H04Q 1/114
. . .
{flooding protection, e.g. using water proof provision} [2013-01]
H04Q 1/116
. . .
{lightning or EMI protection, e.g. shielding or grounding} [2021-08]
H04Q 1/118
. . .
{heat or sun protection} [2013-01]
H04Q 1/12
. .
Arrangements of multiple bars with or without pivotable frames [2013-01]
H04Q 1/13
. .
{Patch panels for monitoring, interconnecting or testing circuits, e.g. patch bay, patch field or jack field; Patching modules} [2013-01]
H04Q 1/131
. . .
{being pivotable} [2013-01]
H04Q 1/133
. . .
{being slidable} [2013-01]
H04Q 1/135
. . .
{characterized by patch cord details} [2013-01]
H04Q 1/136
. . . .
{having patch field management or physical layer management arrangements} [2013-01]
H04Q 1/138
. . . . .
{using RFID} [2013-01]
H04Q 1/14
. .
Distribution frames [2013-01]
H04Q 1/141
. . .
{Details of connexions between cable and distribution frame} [2013-01]
H04Q 1/142
. . .
{Terminal blocks for distribution frames} [2013-01]
H04Q 1/143
. . .
{with contacts on circular surface} [2013-01]
H04Q 1/144
. . .
{Plugs used in distribution frames} [2013-01]
H04Q 1/145
. . .
{with switches arranged in a matrix configuration} [2013-01]
H04Q 1/146
. . .
{with line protection means} [2013-01]
H04Q 1/147
. . .
{using robots for distributing} [2013-01]
H04Q 1/148
. . .
{Identification strips for distribution frames} [2013-01]
H04Q 1/149
. . .
{Wireguides in connector blocks} [2013-01]
H04Q 1/15
. .
{Backplane arrangements} [2013-01]
H04Q 1/155
. . .
{characterised by connection features} [2013-01]
H04Q 1/16
. .
Wiring arrangements for selector switches or relays in frames [2013-01]
H04Q 1/18
.
Electrical details [2013-01]
H04Q 1/20
. .
Testing circuits or apparatus; Circuits or apparatus for detecting, indicating, or signalling faults or troubles [2013-01]
H04Q 1/22
. . .
Automatic arrangements [2013-01]
H04Q 1/24
. . . .
for connection devices [2013-01]
H04Q 1/245
. . . . .
{in time-division multiplex systems} [2013-01]
H04Q 1/26
. . . .
for signalling trouble in unoccupied sub-exchanges [2013-01]
H04Q 1/28
. .
Current-supply circuits or arrangements for selection equipment at exchanges [2013-01]
H04Q 1/30
. .
Signalling arrangements; Manipulation of signalling currents (multiplex systems providing for calling or supervisory signals H04J 1/14, H04J 3/12) [2021-08]
H04Q 1/32
. . .
using trains of dc pulses (H04Q 1/39 takes precedence) [2013-01]
H04Q 1/34
. . . .
Impulse regenerators with mechanical or other non-electrical marking arrangements [2013-01]
H04Q 1/36
. . . .
Pulse-correcting arrangements, e.g. for reducing effects due to interference [2013-01]
H04Q 1/38
. . .
using combinations of direct currents of different amplitudes or polarities over line conductors or combination of line conductors [2013-01]
H04Q 1/39
. . .
using coded pulse groups [2013-01]
H04Q 1/40
. . .
whereby duration of pulse or interval between two pulses is variable [2013-01]
H04Q 1/42
. . . .
involving the position of a pulse in a cycle [2013-01]
H04Q 1/44
. . .
using alternate current (H04Q 1/50 takes precedence) [2013-01]
H04Q 1/442
. . . .
with out-of-voice band signalling frequencies [2013-01]
H04Q 1/4423
. . . . .
{using one signalling frequency} [2013-01]
H04Q 1/4426
. . . . .
{using two or more signalling frequencies, transmitted in succession or simultaneously} [2013-01]
H04Q 1/444
. . . .
with voice-band signalling frequencies [2013-01]
H04Q 1/446
. . . . .
using one signalling frequency (H04Q 1/46 takes precedence) [2013-01]
H04Q 1/4465
. . . . . .
{the same frequency being used for all signalling information, e.g. A.C. nr.9 system} [2013-01]
H04Q 1/448
. . . . . .
with conversion of a single frequency signal into a digital signal [2013-01]
H04Q 1/4485
. . . . . . .
{which is transmitted in digital form} [2013-01]
H04Q 1/45
. . . . .
using multi-frequency signalling (H04Q 1/46 takes precedence) [2013-01]
H04Q 1/453
. . . . . .
in which m-out-of-n signalling frequencies are transmitted [2013-01]
H04Q 1/4535
. . . . . . .
{with an additional signal transmitted for voice protection} [2013-01]
H04Q 1/457
. . . . . .
with conversion of multifrequency signals into digital signals [2013-01]
H04Q 1/4575
. . . . . . .
{which are transmitted in digital form} [2013-01]
H04Q 1/46
. . . . .
comprising means for distinguishing between a signalling current of predetermined frequency and a complex current containing that frequency, e.g. speech current [2013-01]
H04Q 1/48
. . .
Induced-current signalling arrangements [2013-01]
H04Q 1/50
. . .
Conversion between different kinds of signals [2013-01]
H04Q 1/54
. .
Amplifier switched-on automatically in dependence on automatically-selected lines [2013-01]
H04Q 1/56
. .
Balancing circuitry switched-on automatically in dependence on automatically-selected lines [2013-01]
H04Q 3/00
Selecting arrangements (H04Q 5/00 - H04Q 11/00 take precedence) [2016-05]
H04Q 3/0004
.
{using crossbar selectors in the switching stages} [2013-01]
H04Q 3/0008
.
{using relay selectors in the switching stages} [2013-01]
H04Q 3/0012
. .
{in which the relays are arranged in a matrix configuration} [2013-01]
H04Q 3/0016
.
{Arrangements providing connection between exchanges} [2013-01]
H04Q 3/002
. .
{Details} [2013-01]
H04Q 3/0025
. .
{Provisions for signalling} [2021-08]
H04Q 3/0029
. .
{Provisions for intelligent networking} [2013-01]
H04Q 3/0033
. . .
{customer-controlled} [2013-01]
H04Q 3/0037
. . .
{involving call modelling techniques, e.g. modifications to the basic call state model [BCSM]} [2013-01]
H04Q 3/0041
. . .
{involving techniques for avoiding interaction of call service features} [2013-01]
H04Q 3/0045
. . .
{involving hybrid, i.e. a mixture of public and private, or multi-vendor systems} [2013-01]
H04Q 3/005
. . .
{Personal communication services, e.g. provisions for portability of subscriber numbers} [2021-08]
H04Q 3/0054
. . .
{Service creation techniques} [2013-01]
H04Q 3/0058
. . . .
{using service-independent building blocks (SIBBs) or "primitives"} [2013-01]
H04Q 3/0062
. .
{Provisions for network management} [2013-01]
H04Q 3/0066
. . .
{Bandwidth allocation or management} [2013-01]
H04Q 3/007
. . .
{customer-controlled} [2013-01]
H04Q 3/0075
. . .
{Fault management techniques} [2013-01]
H04Q 3/0079
. . . .
{involving restoration of networks, e.g. disaster recovery, self-healing networks} [2013-01]
H04Q 3/0083
. . .
{Network planning or design; Modelling of planned or existing networks} [2013-01]
H04Q 3/0087
. . .
{Network testing or monitoring arrangements} [2013-01]
H04Q 3/0091
. . .
{Congestion or overload control} [2013-01]
H04Q 3/0095
. . .
{Specification, development or application of network management software, e.g. software re-use} [2013-01]
H04Q 3/02
.
Circuit arrangements for selectors responsive to a permutation code [2013-01]
H04Q 3/04
.
Circuit arrangements for receivers of routing digits [2013-01]
H04Q 3/06
. .
for group or trunk group selectors [2013-01]
H04Q 3/08
. .
for local or long-distance selectors [2013-01]
H04Q 3/10
. .
for PBX selectors, i.e. private branch exchange selectors [2013-01]
H04Q 3/12
. .
for line selectors providing transfer of routing digits [2013-01]
H04Q 3/14
. .
for two-way operation selectors [2013-01]
H04Q 3/16
. .
for marking-switches [2013-01]
H04Q 3/18
.
Circuit arrangements for first stage of hunting switching [2013-01]
H04Q 3/20
. .
for preselectors [2013-01]
H04Q 3/22
. . .
comprising common calling and disconnecting circuit [2013-01]
H04Q 3/24
. .
for line finders [2013-01]
H04Q 3/26
. . .
comprising common calling and disconnecting circuit [2013-01]
H04Q 3/28
. . .
comprising main groups and subgroups [2013-01]
H04Q 3/30
. .
Selector finders, i.e. allotters [2013-01]
H04Q 3/32
.
Circuit arrangements for second or subsequent stages of hunting switching [2013-01]
H04Q 3/34
. .
for the second preselection stage [2013-01]
H04Q 3/36
. .
for the second line-finder stage [2013-01]
H04Q 3/38
. .
for stages after the group selector stage [2013-01]
H04Q 3/40
. .
for stages after the line selector, e.g. for extension selector [2013-01]
H04Q 3/42
.
Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker [2013-01]
H04Q 3/44
. .
using revertive control [2013-01]
H04Q 3/46
. .
using signals other than revertive impulses [2013-01]
H04Q 3/47
. .
using translators [2013-01]
H04Q 3/48
. .
using markers [2013-01]
H04Q 3/49
. . .
for end-to-end marking [2013-01]
H04Q 3/495
. . .
for routing connecting paths [2013-01]
H04Q 3/52
. .
using static devices in switching stages, e.g. electronic switching arrangements [2013-01]
H04Q 3/521
. . .
{using semiconductors in the switching stages} [2013-01]
H04Q 3/523
. . . .
{Details} [2013-01]
H04Q 3/525
. . .
{using tubes in the switching stages} [2013-01]
H04Q 3/526
. . .
{Optical switching systems} [2013-01]
H04Q 3/528
. . . .
{Details} [2013-01]
H04Q 3/54
. .
in which the logic circuitry controlling the exchange is centralised [2013-01]
H04Q 3/542
. . .
{Logic circuits or arrangements therefor} [2021-08]
H04Q 3/545
. . .
using a stored programme [2015-11]
H04Q 3/54508
. . . .
{Configuration, initialisation} [2021-08]
H04Q 3/54516
. . . . .
{Initialization, software or data downloading (G06F 9/445 takes precedence)} [2013-01]
H04Q 3/54525
. . . . .
{Features introduction} [2013-01]
H04Q 3/54533
. . . . .
{Configuration data, translation, passwords, databases} [2013-01]
H04Q 3/54541
. . . .
{using multi-processor systems} [2013-01]
H04Q 3/5455
. . . . .
{Multi-processor, parallelism, distributed systems} [2013-01]
H04Q 3/54558
. . . . .
{Redundancy, stand-by} [2013-01]
H04Q 3/54566
. . . . .
{Intelligent peripherals, adjunct processors} [2013-01]
H04Q 3/54575
. . . .
{Software application} [2013-01]
H04Q 3/54583
. . . . .
{Software development, e.g. procedural, object oriented, software generation, software testing} [2013-01]
H04Q 3/54591
. . . . .
{Supervision, e.g. fault localisation, traffic measurements, avoiding errors, failure recovery, monitoring, statistical analysis} [2013-01]
H04Q 3/55
. . .
using wired logic circuitry [2013-01]
H04Q 3/552
. . . .
{Wired circuits or arrangements therefor} [2013-01]
H04Q 3/555
. . . .
being comprised by electro-magnetic devices [2013-01]
H04Q 3/56
. .
in which the control signals are multiplexed [2013-01]
H04Q 3/58
.
Arrangements providing connection between main exchange and sub-exchange or satellite [2013-01]
H04Q 3/60
. .
for connecting to satellites or concentrators which connect one or more exchange lines with a group of local lines [2013-01]
H04Q 3/602
. . .
{Circuit arrangements therefor} [2013-01]
H04Q 3/605
. . .
{Arrangements in the satellite or concentrator} [2013-01]
H04Q 3/607
. . . .
{Details} [2013-01]
H04Q 3/62
. .
for connecting to private branch exchanges [2013-01]
H04Q 3/622
. . .
{Circuit arrangements therefor} [2013-01]
H04Q 3/625
. . .
{Arrangements in the private branch exchange} [2013-01]
H04Q 3/627
. . . .
{Details} [2013-01]
H04Q 3/64
.
Distributing or queueing [2013-01]
H04Q 3/645
. .
{Circuit arrangements therefor} [2013-01]
H04Q 3/66
. .
Traffic distributors [2013-01]
H04Q 3/665
. . .
{Circuit arrangements therefor} [2013-01]
H04Q 3/68
. .
Grouping or interlacing selector groups or stages [2013-01]
H04Q 3/685
. . .
{Circuit arrangements therefor} [2013-01]
H04Q 3/70
.
Identification of class of calling subscriber [2013-01]
H04Q 3/72
.
Finding out and indicating number of calling subscriber [2013-01]
H04Q 3/74
. .
Identification of subscriber calling from a party-line [2013-01]
H04Q 3/76
.
Translation from the called subscriber's number to the outgoing or incoming control information [2013-01]
H04Q 3/78
.
Temporary storage of information of calling or called subscriber (intermediate storage means for telegraphic communication H04L 13/08) [2013-01]
H04Q 5/00
Selecting arrangements wherein two or more subscriber stations are connected by the same line to the exchange [2013-01]
H04Q 5/02
.
with direct connection for all subscribers, i.e. party-line systems (H04Q 5/24 takes precedence) [2013-01]
H04Q 5/04
. .
Signalling by currents in one or other or both line wires or additional wires [2013-01]
H04Q 5/06
. .
Signalling by amplitude or polarity of dc [2013-01]
H04Q 5/08
. .
Signalling by continuous ac [2013-01]
H04Q 5/10
. . .
using single frequencies for different subscribers [2013-01]
H04Q 5/12
. . .
using combinations of frequencies [2013-01]
H04Q 5/14
. .
Signalling by pulses [2013-01]
H04Q 5/16
. . .
by predetermined number of pulses [2013-01]
H04Q 5/18
.
with indirect connection, i.e. through subordinate switching centre [2013-01]
H04Q 5/20
. .
the subordinate centre permitting interconnection of subscribers connected thereto [2013-01]
H04Q 5/22
. .
the subordinate centre not permitting interconnection of subscribers connected thereto [2013-01]
H04Q 5/24
.
for two-party-line systems [2013-01]
H04Q 5/245
. .
{Circuit arrangements in which for one subscriber low frequency speech and/or signalling signals proceed on the line, while for the other subscriber the low frequency speech and/or signalling signals are modulated upon a high frequency carrier signal} [2013-01]
H04Q 9/00
Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom [2013-01]
H04Q 9/02
.
Automatically-operated arrangements [2013-01]
H04Q 9/04
.
Arrangements for synchronous operation [2013-01]
H04Q 9/06
.
Calling by using amplitude or polarity of dc [2013-01]
H04Q 9/08
.
Calling by using continuous ac [2013-01]
H04Q 9/10
. .
using single different frequencies [2013-01]
H04Q 9/12
. .
using combinations of frequencies [2013-01]
H04Q 9/14
.
Calling by using pulses [2013-01]
H04Q 9/16
. .
by predetermined number of pulses [2013-01]
H04Q 11/00
Selecting arrangements for multiplex systems (multiplex systems H04J) [2013-01]
H04Q 11/0001
.
{using optical switching} [2013-01]
H04Q 11/0003
. .
{Details} [2013-01]
H04Q 11/0005
. .
{Switch and router aspects} [2013-01]
H04Q 2011/0007
. . .
{Construction} [2013-01]
H04Q 2011/0009
. . . .
{using wavelength filters} [2013-01]
H04Q 2011/0011
. . . .
{using wavelength conversion} [2013-01]
H04Q 2011/0013
. . . .
{using gating amplifiers} [2013-01]
H04Q 2011/0015
. . . .
{using splitting combining} [2013-01]
H04Q 2011/0016
. . . .
{using wavelength multiplexing or demultiplexing} [2013-01]
H04Q 2011/0018
. . . .
{using tunable transmitters or receivers} [2013-01]
H04Q 2011/002
. . . .
{using optical delay lines or optical buffers or optical recirculation} [2013-01]
H04Q 2011/0022
. . . .
{using fibre gratings} [2013-01]
H04Q 2011/0024
. . . .
{using space switching} [2013-01]
H04Q 2011/0026
. . . .
{using free space propagation (e.g. lenses, mirrors)} [2013-01]
H04Q 2011/0028
. . . . .
{using holograms} [2013-01]
H04Q 2011/003
. . . . .
{using switches based on microelectro-mechanical systems [MEMS]} [2017-08]
H04Q 2011/0032
. . . .
{using static wavelength routers (e.g. arrayed waveguide grating router [AWGR] )} [2013-01]
H04Q 2011/0033
. . . .
{using time division switching} [2013-01]
H04Q 2011/0035
. . . .
{using miscellaneous components, e.g. circulator, polarisation, acousto/thermo optical} [2013-01]
H04Q 2011/0037
. . .
{Operation} [2013-01]
H04Q 2011/0039
. . . .
{Electrical control} [2013-01]
H04Q 2011/0041
. . . .
{Optical control} [2013-01]
H04Q 2011/0043
. . . .
{Fault tolerance} [2013-01]
H04Q 2011/0045
. . . .
{Synchronisation} [2013-01]
H04Q 2011/0047
. . . .
{Broadcast; Multicast} [2013-01]
H04Q 2011/0049
. . . .
{Crosstalk reduction; Noise; Power budget} [2013-01]
H04Q 2011/005
. . . .
{Arbitration and scheduling} [2013-01]
H04Q 2011/0052
. . .
{Interconnection of switches} [2013-01]
H04Q 2011/0054
. . . .
{Distribute-route} [2013-01]
H04Q 2011/0056
. . . .
{Clos} [2013-01]
H04Q 2011/0058
. . . .
{Crossbar; Matrix} [2013-01]
H04Q 2011/006
. . . .
{Full mesh} [2013-01]
H04Q 11/0062
. .
{Network aspects} [2013-01]
H04Q 2011/0064
. . .
{Arbitration, scheduling or medium access control aspects} [2013-01]
H04Q 11/0066
. . .
{Provisions for optical burst or packet networks} [2013-01]
H04Q 11/0067
. . .
{Provisions for optical access or distribution networks, e.g. Gigabit Ethernet Passive Optical Network (GE-PON), ATM-based Passive Optical Network (A-PON), PON-Ring} [2013-01]
H04Q 2011/0069
. . .
{using dedicated optical channels} [2013-01]
H04Q 11/0071
. . .
{Provisions for the electrical-optical layer interface} [2013-01]
H04Q 2011/0073
. . .
{Provisions for forwarding or routing, e.g. lookup tables} [2013-01]
H04Q 2011/0075
. . .
{Wavelength grouping or hierarchical aspects} [2013-01]
H04Q 2011/0077
. . .
{Labelling aspects, e.g. multiprotocol label switching [MPLS], G-MPLS, MPAS} [2013-01]
H04Q 2011/0079
. . .
{Operation or maintenance aspects} [2013-01]
H04Q 2011/0081
. . . .
{Fault tolerance; Redundancy; Recovery; Reconfigurability} [2013-01]
H04Q 2011/0083
. . . .
{Testing; Monitoring} [2013-01]
H04Q 2011/0084
. . .
{Quality of service aspects} [2013-01]
H04Q 2011/0086
. . .
{Network resource allocation, dimensioning or optimisation} [2013-01]
H04Q 2011/0088
. . .
{Signalling aspects} [2013-01]
H04Q 2011/009
. . .
{Topology aspects} [2013-01]
H04Q 2011/0092
. . . .
{Ring} [2013-01]
H04Q 2011/0094
. . . .
{Star} [2013-01]
H04Q 2011/0096
. . . .
{Tree} [2013-01]
H04Q 2011/0098
. . . .
{Mesh} [2013-01]
H04Q 11/02
.
for frequency-division multiplexing {(H04Q 11/0001 takes precedence)} [2013-01]
H04Q 11/023
. .
{using a stored programme control} [2013-01]
H04Q 11/026
. . .
{Details} [2013-01]
H04Q 11/04
.
for time-division multiplexing {(H04Q 11/0001 takes precedence)} [2013-01]
H04Q 11/0407
. .
{using a stored programme control} [2013-01]
H04Q 11/0414
. . .
{Details} [2013-01]
H04Q 11/0421
. .
{Circuit arrangements therefor} [2013-01]
H04Q 11/0428
. .
{Integrated services digital network, i.e. systems for transmission of different types of digitised signals, e.g. speech, data, telecentral, television signals} [2013-01]
H04Q 11/0435
. . .
{Details} [2013-01]
H04Q 11/0442
. . . .
{Exchange access circuits} [2013-01]
H04Q 11/045
. . . .
{Selection or connection testing arrangements} [2013-01]
H04Q 11/0457
. . . .
{Connection protocols} [2013-01]
H04Q 11/0464
. . . .
{Primary rate access circuits} [2013-01]
H04Q 11/0471
. . . .
{Terminal access circuits} [2013-01]
H04Q 11/0478
. . .
{Provisions for broadband connections} [2013-01]
H04Q 11/0485
. . . .
{Circuit arrangements therefor} [2019-05]
H04Q 11/0492
. . . . .
{Details} [2013-01]
H04Q 11/06
. .
Time-space-time switching [2013-01]
H04Q 11/08
. .
Time only switching [2013-01]
H04Q 2201/00
Constructional details of selecting arrangements [2013-01]
H04Q 2201/02
.
Details of frames [2013-01]
H04Q 2201/04
.
Modular construction [2013-01]
H04Q 2201/06
.
Cooling arrangements [2013-01]
H04Q 2201/08
.
Pivotable parts [2013-01]
H04Q 2201/10
.
Housing details [2013-01]
H04Q 2201/12
.
Printed circuits [2013-01]
H04Q 2201/14
.
Screening, grounding or crosstalk reduction details [2013-01]
H04Q 2201/16
.
Coaxial cable connectors [2013-01]
H04Q 2201/18
.
Rails [2013-01]
H04Q 2201/80
.
in specific systems [2013-01]
H04Q 2201/802
. .
in data transmission systems [2013-01]
H04Q 2201/804
. .
in optical transmission systems [2013-01]
H04Q 2201/806
. .
in PBX or KTS systems [2013-01]
H04Q 2201/808
. .
in wireless transmission systems [2013-01]
H04Q 2209/00
Arrangements in telecontrol or telemetry systems [2013-01]
H04Q 2209/10
.
using a centralized architecture [2013-01]
H04Q 2209/20
.
using a distributed architecture [2013-01]
H04Q 2209/25
. .
using a mesh network, e.g. a public urban network such as public lighting, bus stops or traffic lights [2013-01]
H04Q 2209/30
.
using a wired architecture [2013-01]
H04Q 2209/40
.
using a wireless architecture [2013-01]
H04Q 2209/43
. .
using wireless personal area networks [WPAN], e.g. 802.15, 802.15.1, 802.15.4, Bluetooth or ZigBee [2013-01]
H04Q 2209/47
. .
using RFID associated with sensors [2013-01]
H04Q 2209/50
.
using a mobile data collecting device, e.g. walk by or drive by [2013-01]
H04Q 2209/60
.
for transmitting utility meters data, i.e. transmission of data from the reader of the utility meter [2013-01]
H04Q 2209/70
.
Arrangements in the main station, i.e. central controller [2013-01]
H04Q 2209/75
. .
by polling or interrogating the sub-stations [2013-01]
H04Q 2209/753
. . .
where the polling of the sub-stations is synchronous [2013-01]
H04Q 2209/756
. . .
where the polling of the sub-stations is cyclic, e.g. round-robin [2013-01]
H04Q 2209/80
.
Arrangements in the sub-station, i.e. sensing device [2013-01]
H04Q 2209/82
. .
where the sensing device takes the initiative of sending data [2013-01]
H04Q 2209/823
. . .
where the data is sent when the measured values exceed a threshold, e.g. sending an alarm [2013-01]
H04Q 2209/826
. . .
where the data is sent periodically [2013-01]
H04Q 2209/84
. .
Measuring functions [2013-01]
H04Q 2209/845
. . .
where the measuring is synchronized between sensing devices [2013-01]
H04Q 2209/86
. .
Performing a diagnostic of the sensing device [2013-01]
H04Q 2209/88
. .
Providing power supply at the sub-station [2013-01]
H04Q 2209/883
. . .
where the sensing device enters an active or inactive mode [2013-01]
H04Q 2209/886
. . .
using energy harvesting, e.g. solar, wind or mechanical [2013-01]
H04Q 2213/00
Indexing scheme relating to selecting arrangements in general and for multiplex systems [2013-01]
H04Q 2213/001
.
Motorselectors [2013-01]
H04Q 2213/002
.
Graphical representation [2013-01]
H04Q 2213/003
.
Constructional details [2013-01]
H04Q 2213/011
.
Periodic optical structures, e.g. gratings, holograms [2013-01]
H04Q 2213/012
.
Tunable opticalo systems [2013-01]
H04Q 2213/013
.
Optical shutters, e.g. LCD arrays [2013-01]
H04Q 2213/014
.
Optical storage, not delay lines [2013-01]
H04Q 2213/015
.
3D-optical arrangement [2013-01]
H04Q 2213/016
.
Optical subcarrier modulation [2013-01]
H04Q 2213/017
.
Optical polarisation [2013-01]
H04Q 2213/02
.
Relay switches [2013-01]
H04Q 2213/03
.
PAM [2013-01]
H04Q 2213/031
.
PCM [2013-01]
H04Q 2213/032
.
Delta modulation [2013-01]
H04Q 2213/033
.
Other modulation methods [2013-01]
H04Q 2213/034
.
Codec; PCM compression [2013-01]
H04Q 2213/036
.
Series parallel conversion; Parallel bit transmission [2013-01]
H04Q 2213/037
.
Resonant transfer; Sample and hold [2013-01]
H04Q 2213/038
.
Optical modulation [2013-01]
H04Q 2213/04
.
Coordinate switches; Crossbar switches [2013-01]
H04Q 2213/042
.
Elements placed in matrix relation, not serving as connection switch [2013-01]
H04Q 2213/046
.
Binary switch (Beta element) [2013-01]
H04Q 2213/05
.
Software aspects [2013-01]
H04Q 2213/052
.
Multi-tasking [2013-01]
H04Q 2213/053
.
Priority levels [2013-01]
H04Q 2213/054
.
Expert systems, e.g. neural networks [2013-01]
H04Q 2213/055
.
Linked lists [2013-01]
H04Q 2213/056
.
Software routines, e.g. finite state machines [2013-01]
H04Q 2213/058
.
IRQ [2013-01]
H04Q 2213/061
.
Preselector; Second line switch [2013-01]
H04Q 2213/062
.
Finder switch (e.g. line finder, call finder) [2013-01]
H04Q 2213/063
.
Strowger-switch as finder switch [2013-01]
H04Q 2213/064
.
Cascaded finder or preselector switches [2013-01]
H04Q 2213/065
.
Group selector [2013-01]
H04Q 2213/066
.
Switch with two or more wipersets [2013-01]
H04Q 2213/067
.
Finder switch serving as final selector [2013-01]
H04Q 2213/068
.
Final selector [2013-01]
H04Q 2213/069
.
Panel switches [2013-01]
H04Q 2213/07
.
Call distribution; Call detection; Call signalling by common apparatus [2013-01]
H04Q 2213/072
.
Sequence circuits [2013-01]
H04Q 2213/076
.
Distributing frame; Cross connect [2013-01]
H04Q 2213/08
.
Power supply [2013-01]
H04Q 2213/082
.
Phantom circuits [2013-01]
H04Q 2213/09
.
Subscriber related equipment; Analog terminal [2013-01]
H04Q 2213/091
.
Indication of kind/number of subscriber [2013-01]
H04Q 2213/092
.
Scanning of (subscriber) lines, registers, translators [2013-01]
H04Q 2213/093
.
Personal computer [2013-01]
H04Q 2213/094
.
Range extender [2013-01]
H04Q 2213/095
.
User access; PIN code [2013-01]
H04Q 2213/096
.
Digital subscriber terminal [2013-01]
H04Q 2213/097
.
Numbering [2013-01]
H04Q 2213/098
.
Mobile subscriber [2013-01]
H04Q 2213/099
.
Loop multiplexer (not ISDN BRI/PRI; not 381), e.g. loop splitter [2013-01]
H04Q 2213/10
.
Register [2013-01]
H04Q 2213/101
.
Discriminating selectors [2013-01]
H04Q 2213/102
.
Common translator [2013-01]
H04Q 2213/103
.
Memories [2013-01]
H04Q 2213/104
.
Central control; Computer control [2013-01]
H04Q 2213/106
.
Microcomputer; Microprocessor [2013-01]
H04Q 2213/107
.
Control equipment for part of the connection [2013-01]
H04Q 2213/109
.
Initialising; Downloading of parameters or program routines [2013-01]
H04Q 2213/11
.
Sequence switches [2013-01]
H04Q 2213/12
.
Call indicator, e.g. number indicator [2013-01]
H04Q 2213/121
.
Marker [2013-01]
H04Q 2213/124
.
Pulse distributor [2013-01]
H04Q 2213/13
.
Charging [2013-01]
H04Q 2213/13001
.
Step by step switches [2013-01]
H04Q 2213/13003
.
Constructional details of switching devices [2013-01]
H04Q 2213/1301
.
Optical transmission, optical switches [2013-01]
H04Q 2213/13012
.
Hybrid fiber coax, HFC [2013-01]
H04Q 2213/13016
.
Optical subcarrier modulation [2013-01]
H04Q 2213/1302
.
Relay switches [2013-01]
H04Q 2213/1303
.
Pulse amplitude modulation, PAM [2013-01]
H04Q 2213/13031
.
Pulse code modulation, PCM [2013-01]
H04Q 2213/13034
.
A/D conversion, code compression/expansion [2013-01]
H04Q 2213/13036
.
Serial/parallel conversion, parallel bit transmission [2013-01]
H04Q 2213/13038
.
Optical modulation [2013-01]
H04Q 2213/13039
.
Asymmetrical two-way transmission, e.g. ADSL, HDSL [2013-01]
H04Q 2213/1304
.
Coordinate switches, crossbar, 4/2 with relays, coupling field [2013-01]
H04Q 2213/13046
.
Binary switch, β-element [2017-08]
H04Q 2213/1305
.
Software aspects [2013-01]
H04Q 2213/13051
.
Software generation [2013-01]
H04Q 2213/13052
.
Multitasking [2013-01]
H04Q 2213/13053
.
Priority levels [2013-01]
H04Q 2213/13054
.
Expert system [2013-01]
H04Q 2213/13056
.
Routines, finite state machines [2013-01]
H04Q 2213/13057
.
Object-oriented software [2013-01]
H04Q 2213/13058
.
Interrupt request [2013-01]
H04Q 2213/1307
.
Call setup [2013-01]
H04Q 2213/13072
.
Sequence circuits for call signaling, ACD systems [2013-01]
H04Q 2213/13076
.
Distributing frame, MDF, cross-connect switch [2013-01]
H04Q 2213/1308
.
Power supply [2013-01]
H04Q 2213/13082
.
Power supply via phantom line [2013-01]
H04Q 2213/1309
.
Apparatus individually associated with a subscriber line, line circuits [2013-01]
H04Q 2213/13091
.
CLI, identification of calling line [2013-01]
H04Q 2213/13092
.
Scanning of subscriber lines, monitoring [2013-01]
H04Q 2213/13093
.
Personal computer, PC [2013-01]
H04Q 2213/13094
.
Range extender [2013-01]
H04Q 2213/13095
.
PIN / Access code, authentication [2013-01]
H04Q 2213/13096
.
Digital apparatus individually associated with a subscriber line, digital line circuits [2013-01]
H04Q 2213/13097
.
Numbering, addressing [2013-01]
H04Q 2213/13098
.
Mobile subscriber [2013-01]
H04Q 2213/13099
.
Loop multiplexer [2013-01]
H04Q 2213/131
.
Register [2013-01]
H04Q 2213/13102
.
Common translator [2013-01]
H04Q 2213/13103
.
Memory [2013-01]
H04Q 2213/13104
.
Central control, computer control [2013-01]
H04Q 2213/13106
.
Microprocessor, CPU [2013-01]
H04Q 2213/13107
.
Control equipment for a part of the connection, distributed control, co-processing [2013-01]
H04Q 2213/13109
.
Initializing, personal profile [2013-01]
H04Q 2213/13121
.
Marker [2013-01]
H04Q 2213/13124
.
Pulse distributor [2013-01]
H04Q 2213/1313
.
Metering, billing [2013-01]
H04Q 2213/13134
.
Coin boxes, payphone, prepaid [2013-01]
H04Q 2213/13136
.
Collect call (information service H04Q 2213/13376) [2013-01]
H04Q 2213/13138
.
Least cost routing, LCR [2013-01]
H04Q 2213/13139
.
Fraud detection/prevention [2013-01]
H04Q 2213/13141
.
Hunting for free outlet, circuit or channel [2013-01]
H04Q 2213/13144
.
Searching path through number of switching stages or nodes, e.g. revertive blocking [2013-01]
H04Q 2213/13145
.
Rerouting upon failure [2013-01]
H04Q 2213/13146
.
Rerouting upon blocking/overload, rearrangement [2013-01]
H04Q 2213/13148
.
Maximum profit routing [2013-01]
H04Q 2213/13149
.
Change of provider, e.g. network or service [2013-01]
H04Q 2213/1315
.
Call waiting [2013-01]
H04Q 2213/13152
.
Callback [2013-01]
H04Q 2213/13156
.
Automatic digit redialling, automatic call retry [2013-01]
H04Q 2213/1316
.
Service observation, testing [2013-01]
H04Q 2213/13162
.
Fault indication and localisation [2013-01]
H04Q 2213/13163
.
Fault alarm [2013-01]
H04Q 2213/13164
.
Traffic (registration, measurement,...) [2013-01]
H04Q 2213/13166
.
Fault prevention [2013-01]
H04Q 2213/13167
.
Redundant apparatus [2013-01]
H04Q 2213/13168
.
Error Correction [2013-01]
H04Q 2213/13172
.
Supervisory signals [2013-01]
H04Q 2213/13173
.
Busy signals [2013-01]
H04Q 2213/13174
.
Data transmission, file transfer [2013-01]
H04Q 2213/13175
.
Graphical user interface [GUI], WWW interface, visual indication [2013-01]
H04Q 2213/13176
.
Common channel signaling, CCS7 [2013-01]
H04Q 2213/13178
.
Control signals [2013-01]
H04Q 2213/13179
.
Fax, still picture [2013-01]
H04Q 2213/1318
.
Ringing [2013-01]
H04Q 2213/1319
.
Amplifier, attenuation circuit, echo suppressor [2013-01]
H04Q 2213/13191
.
Repeater [2013-01]
H04Q 2213/13194
.
Four wire connection, transmission [2013-01]
H04Q 2213/13196
.
Connection circuit/link/trunk/junction, bridge, router, gateway [2013-01]
H04Q 2213/13199
.
Modem, modulation [2013-01]
H04Q 2213/132
.
Multiple-zone-metering [2013-01]
H04Q 2213/13201
.
Change-over of service during connection [2013-01]
H04Q 2213/13202
.
Network termination [NT] [2013-01]
H04Q 2213/13203
.
Exchange termination [ET] [2015-10]
H04Q 2213/13204
.
Protocols [2013-01]
H04Q 2213/13205
.
Primary rate access, PRI [2013-01]
H04Q 2213/13206
.
User-to-user signaling, UUS [2013-01]
H04Q 2213/13208
.
Inverse multiplexing, channel bonding, e.g. TSSI aspects [2013-01]
H04Q 2213/13209
.
ISDN [2013-01]
H04Q 2213/13213
.
Counting, timing circuits [2013-01]
H04Q 2213/13214
.
Clock signals [2013-01]
H04Q 2213/13215
.
Code checking, CRC [2013-01]
H04Q 2213/13216
.
Code signals, frame structure [2013-01]
H04Q 2213/13217
.
Cranckback in routing, trombone connection, loopback circuit [2013-01]
H04Q 2213/1322
.
PBX [2013-01]
H04Q 2213/13222
.
PBX circuits in public exchange, centrex [2013-01]
H04Q 2213/13224
.
Off-net subscriber, dial in to/out from network, teleworking [2013-01]
H04Q 2213/1323
.
Party line [2013-01]
H04Q 2213/1324
.
Conference call [2013-01]
H04Q 2213/13242
.
Broadcast, diffusion, multicast, point-to-multipoint (1 : N) [2013-01]
H04Q 2213/13246
.
Instant speaker's algorithm [ISA] [2013-01]
H04Q 2213/13248
.
Multimedia [2013-01]
H04Q 2213/1325
.
Priority service [2013-01]
H04Q 2213/13251
.
Restricted service, class of service [2013-01]
H04Q 2213/13256
.
Call screening [2013-01]
H04Q 2213/1326
.
Consultation call, broker's call, call hold, toggling [2013-01]
H04Q 2213/1327
.
Release and resetting of connection [2013-01]
H04Q 2213/13271
.
Forced release [2013-01]
H04Q 2213/13272
.
Premature release [2013-01]
H04Q 2213/13274
.
Call rejection, call barring [2013-01]
H04Q 2213/1328
.
Call transfer, e.g. in PBX [2013-01]
H04Q 2213/13281
.
Call transfer/forward at night [2013-01]
H04Q 2213/13282
.
Call forward, follow-me, call diversion [2013-01]
H04Q 2213/13284
.
Call tracing [2013-01]
H04Q 2213/13286
.
Direct in-dialling in PBX, DDI [2013-01]
H04Q 2213/13287
.
Wake-up call service [2013-01]
H04Q 2213/13288
.
Closed user groups, CUG [2013-01]
H04Q 2213/1329
.
Asynchronous transfer mode, ATM [2013-01]
H04Q 2213/13291
.
Frequency division multiplexing, FDM [2013-01]
H04Q 2213/13292
.
Time division multiplexing, TDM [2013-01]
H04Q 2213/13293
.
TASI, irregular time division, burst switching [2013-01]
H04Q 2213/13294
.
CDMA, code division multiplexing, i.e. combinations of H04Q 2213/13291 and/or H04Q 2213/13292 with space division [2013-01]
H04Q 2213/13295
.
Wavelength multiplexing, WDM [2013-01]
H04Q 2213/13296
.
Packet switching, X.25, frame relay [2013-01]
H04Q 2213/13297
.
Coupling different rates in TDM systems, data rate adaptation [2013-01]
H04Q 2213/13298
.
Local loop systems, access network [2013-01]
H04Q 2213/13299
.
Bus [2013-01]
H04Q 2213/133
.
Multiple-time-metering [2013-01]
H04Q 2213/13302
.
Magnetic elements [2013-01]
H04Q 2213/13305
.
Transistors, semiconductors in general [2013-01]
H04Q 2213/13306
.
Ferro-electric elements [2013-01]
H04Q 2213/1331
.
Delay elements, shift registers [2013-01]
H04Q 2213/1332
.
Logic circuits [2013-01]
H04Q 2213/13322
.
Integrated circuits [2013-01]
H04Q 2213/1333
.
Random systems [2013-01]
H04Q 2213/13331
.
Abbreviated dialling [2013-01]
H04Q 2213/13332
.
Broadband, CATV, dynamic bandwidth allocation [2013-01]
H04Q 2213/13333
.
Earth satellites [2013-01]
H04Q 2213/13334
.
Key telephone systems [2013-01]
H04Q 2213/13335
.
Simulation, emulation [2013-01]
H04Q 2213/13336
.
Store & forward, messaging systems (email H04Q 2213/13375) [2013-01]
H04Q 2213/13337
.
Picturephone, videotelephony [2013-01]
H04Q 2213/13338
.
Do-not-disturb [2013-01]
H04Q 2213/13339
.
Ciphering, encryption, security [2013-01]
H04Q 2213/1334
.
Configuration within the switch [2013-01]
H04Q 2213/13341
.
Connections within the switch [2013-01]
H04Q 2213/13342
.
Arrangement of switches in the network [2013-01]
H04Q 2213/13343
.
Neural networks [2013-01]
H04Q 2213/13344
.
Overflow [2013-01]
H04Q 2213/13345
.
Intelligent networks, SCP [2013-01]
H04Q 2213/13348
.
Channel/line reservation [2013-01]
H04Q 2213/13349
.
Network management [2013-01]
H04Q 2213/13352
.
Self-routing networks, real-time routing [2013-01]
H04Q 2213/13353
.
Routing table, map memory [2013-01]
H04Q 2213/1336
.
Synchronisation [2013-01]
H04Q 2213/13361
.
Synchronous systems [2013-01]
H04Q 2213/13362
.
Asynchronous systems [2013-01]
H04Q 2213/13363
.
Pulse stuffing, bit stuffing [2013-01]
H04Q 2213/13367
.
Hierarchical multiplexing, add-drop multiplexing [2013-01]
H04Q 2213/1337
.
Operator, emergency services [2013-01]
H04Q 2213/13372
.
Intercepting operator [2013-01]
H04Q 2213/13374
.
Paging [2013-01]
H04Q 2213/13375
.
Electronic mail [2013-01]
H04Q 2213/13376
.
Information service, downloading of information, 0800/0900 services [2013-01]
H04Q 2213/13377
.
Recorded announcement [2013-01]
H04Q 2213/13378
.
Speech recognition, speech analysis [2013-01]
H04Q 2213/1338
.
Inter-exchange connection [2013-01]
H04Q 2213/13381
.
Pair-gain system, digital loop carriers [2013-01]
H04Q 2213/13383
.
Hierarchy of switches, main and subexchange, e.g. satellite exchange [2013-01]
H04Q 2213/13384
.
Inter-PBX traffic, PBX networks, e.g. corporate networks [2013-01]
H04Q 2213/13385
.
Off-net subscriber [2013-01]
H04Q 2213/13386
.
Line concentrator [2013-01]
H04Q 2213/13387
.
Call gapping [2013-01]
H04Q 2213/13388
.
Saturation signaling systems [2013-01]
H04Q 2213/13389
.
LAN, internet [2013-01]
H04Q 2213/1339
.
Fixed association of channels [2013-01]
H04Q 2213/13391
.
Channel assigned to connections [2013-01]
H04Q 2213/13392
.
Channels assigned according to rules [2013-01]
H04Q 2213/13393
.
Time slot switching, T-stage, time slot interchanging, TSI [2013-01]
H04Q 2213/13395
.
Permanent channel, leased line [2013-01]
H04Q 2213/13396
.
Signaling in general, in-band signalling [2013-01]
H04Q 2213/13399
.
Virtual channel/circuits [2013-01]
H04Q 2213/134
.
Coin box [2013-01]
H04Q 2213/13402
.
Data transmission out of voice frequency band (ADSL H04Q 2213/13039) [2013-01]
H04Q 2213/13405
.
Dual frequency signaling, DTMF [2013-01]
H04Q 2213/13407
.
Detection of data transmission mode [2013-01]
H04Q 2213/135
.
Service creation [2013-01]
H04Q 2213/13501
.
Feature interactions [2013-01]
H04Q 2213/13502
.
primitives - inc. service-independent building blocks [SIBBs] [2013-01]
H04Q 2213/13503
.
object-oriented systems [2013-01]
H04Q 2213/13504
.
client/server architectures [2013-01]
H04Q 2213/13505
.
management information base [MIB] [2013-01]
H04Q 2213/13511
.
reservation [2013-01]
H04Q 2213/13512
.
800 - freefone [2013-01]
H04Q 2213/13513
.
UPT - personal as opposed to terminal mobility, inc. number portability [2013-01]
H04Q 2213/13514
.
quality of service - inc. grade of service [2013-01]
H04Q 2213/13515
.
authentication, authorisation - fraud prevention [2013-01]
H04Q 2213/13516
.
agents or brokers - user, terminal etc., also OSI agent/managers [2013-01]
H04Q 2213/13517
.
SLEE - service logic execution [2013-01]
H04Q 2213/13521
.
fault management [2013-01]
H04Q 2213/13522
.
traffic management [2013-01]
H04Q 2213/13523
.
bandwidth management, e.g. capacity management [2013-01]
H04Q 2213/13524
.
cost management (least cost H04Q 2213/13138) [2013-01]
H04Q 2213/13525
.
GUI - graphical user interface, inc. for service creation [2013-01]
H04Q 2213/13526
.
resource management [2013-01]
H04Q 2213/13527
.
protocols - X.25, TCAP etc. [2013-01]
H04Q 2213/13528
.
SCP architecture [2013-01]
H04Q 2213/13531
.
virtual networks - inc. PVN [2013-01]
H04Q 2213/13532
.
mobile networks [2013-01]
H04Q 2213/13533
.
multivendor and hybrid, e.g. public/private, networks, inc. international [2013-01]
H04Q 2213/13534
.
Internet - WWW, HTML, browsers etc. [2013-01]
H04Q 2213/13535
.
distributed systems - also domains in service creation [2013-01]
H04Q 2213/13541
.
routing [2013-01]
H04Q 2213/13542
.
numbering plans, e.g. number re-allocation [2013-01]
H04Q 2213/13543
.
network planning, configuration management, e.g. for growth [2013-01]
H04Q 2213/13544
.
modeling or simulation, particularly of networks [2013-01]
H04Q 2213/13545
.
monitoring of signaling messages, intelligent network [2013-01]
H04Q 2213/13546
.
Intelligent Peripheral [2013-01]
H04Q 2213/13547
.
subscriber, e.g. profile, database, database access [2013-01]
H04Q 2213/13548
.
call modeling, e.g. Basic Call State Model [2013-01]
H04Q 2213/13561
.
congestion - inc. overflow [2013-01]
H04Q 2213/13562
.
blocking [2013-01]
H04Q 2213/13563
.
call gapping, e.g. to prevent congestion [2013-01]
H04Q 2213/13564
.
load balancing [2013-01]
H04Q 2213/13565
.
restoration, e.g. disaster recovery, self-healing networks [2013-01]
H04Q 2213/13566
.
mediation [2013-01]
H04Q 2213/13567
.
negotiation, management policy, goals [2013-01]
H04Q 2213/136
.
Collect call, e.g. 800 service [2013-01]
H04Q 2213/138
.
Least cost routing [2013-01]
H04Q 2213/14
.
Busy test, e.g. marking busy [2013-01]
H04Q 2213/141
.
Hunting for free outlet, circuit, channel [2013-01]
H04Q 2213/144
.
Searching a free path through cascaded switching stages [2013-01]
H04Q 2213/145
.
Rerouting, e.g. on failure [2013-01]
H04Q 2213/146
.
Rearrangement [2013-01]
H04Q 2213/15
.
Waiting [2013-01]
H04Q 2213/152
.
Automatic call retry [2013-01]
H04Q 2213/156
.
Automatic redialling [2013-01]
H04Q 2213/16
.
Service observation; Fault circuit; Testing [2013-01]
H04Q 2213/161
.
Blocking or cutoff of faulty apparatus, e.g. timed out [2013-01]
H04Q 2213/162
.
Fault indication, e.g. localisation [2013-01]
H04Q 2213/163
.
Fault alarm [2013-01]
H04Q 2213/164
.
Traffic registration; Adaptation of traffic possibilities [2013-01]
H04Q 2213/166
.
Prevention of faults [2013-01]
H04Q 2213/167
.
Redundancy [2013-01]
H04Q 2213/171
.
Number indicating signals (no dial signals) [2013-01]
H04Q 2213/172
.
Supervisory signals [2013-01]
H04Q 2213/173
.
Busy signal [2013-01]
H04Q 2213/174
.
Data transmission [2013-01]
H04Q 2213/175
.
Other signals [2013-01]
H04Q 2213/176
.
Common channel signalling [2013-01]
H04Q 2213/177
.
Number sending signals, e.g. dialling tone, proceed to send [2013-01]
H04Q 2213/178
.
Control signals, e.g. also service connection [2013-01]
H04Q 2213/179
.
Facsimile; Fax, e.g. still picture [2013-01]
H04Q 2213/18
.
Ringing [2013-01]
H04Q 2213/182
.
Ring trip [2013-01]
H04Q 2213/19
.
Echo-cancelling; Hybrid; Amplifier; Attenuator [2013-01]
H04Q 2213/191
.
Repeater [2013-01]
H04Q 2213/192
.
Common amplifier for bidirectional traffic [2013-01]
H04Q 2213/194
.
Four-wire connection or transmission [2013-01]
H04Q 2213/196
.
Connection-circuit; Trunk; Junction circuit [2013-01]
H04Q 2213/197
.
Ping-pong transmission [2013-01]
H04Q 2213/198
.
Temporary associated devices; Pooled adapters [2013-01]
H04Q 2213/199
.
Modem [2013-01]
H04Q 2213/20
.
ISDN [2013-01]
H04Q 2213/201
.
Change-over service [2013-01]
H04Q 2213/202
.
Network termination [NT] [2013-01]
H04Q 2213/203
.
Exchange termination [ET] [2013-01]
H04Q 2213/204
.
ISDN protocol; ISO 7 [2013-01]
H04Q 2213/205
.
Primary rate access [2013-01]
H04Q 2213/206
.
User-to-user signalling [2013-01]
H04Q 2213/208
.
Inverse multiplexing; Time slot sequence integrity [TSSI] aspects [2013-01]
H04Q 2213/21
.
Impulse transmission [2013-01]
H04Q 2213/211
.
Impulse correction or reshaping [2013-01]
H04Q 2213/212
.
Absorbing of digits [2013-01]
H04Q 2213/214
.
Phase shifted impulses; Clock signals; Timing [2019-05]
H04Q 2213/215
.
Code checking [2013-01]
H04Q 2213/216
.
Code signals; Framing (not synchronizing) [2013-01]
H04Q 2213/217
.
Setting of switch by means of pulses [2013-01]
H04Q 2213/218
.
Bistable relays, e.g. Ferreed [2013-01]
H04Q 2213/22
.
PBX [2013-01]
H04Q 2213/222
.
PBX circuits in public exchange (Centrex) [2013-01]
H04Q 2213/23
.
Partyline [2013-01]
H04Q 2213/24
.
Conference circuit [2013-01]
H04Q 2213/242
.
Broadcast and multicast (1:N) [2013-01]
H04Q 2213/243
.
Con-cast, e.g. multipoint-point (N:1) [2013-01]
H04Q 2213/246
.
Instant speaker's algorithm [ISA] [2013-01]
H04Q 2213/25
.
Preferential service [2013-01]
H04Q 2213/251
.
Restricted service [2013-01]
H04Q 2213/252
.
Breaking-in on existing connection [2013-01]
H04Q 2213/256
.
Call screening [2013-01]
H04Q 2213/26
.
Call-back [2013-01]
H04Q 2213/27
.
Release [2013-01]
H04Q 2213/271
.
Forced release [2013-01]
H04Q 2213/272
.
Premature release [2013-01]
H04Q 2213/274
.
Call rejection [2013-01]
H04Q 2213/28
.
Call transfer [2013-01]
H04Q 2213/281
.
Prepared call transfer, e.g. night service, intercepting service [2013-01]
H04Q 2213/282
.
Call forwarding [2013-01]
H04Q 2213/284
.
Call tracing [2013-01]
H04Q 2213/286
.
Direct inward dialling [PBX] [2013-01]
H04Q 2213/287
.
Call service, e.g. morning call service [2013-01]
H04Q 2213/29
.
ATM [2013-01]
H04Q 2213/291
.
Frequency division multiplex [2013-01]
H04Q 2213/292
.
Time (de)multiplexing [2013-01]
H04Q 2213/293
.
Irregular time switching, e.g. TASI; Burst switching [2013-01]
H04Q 2213/294
.
Other multiplexing systems, e.g. codemultiplex, TDM, FDM, FDM and Space division, TDM and Space division [2013-01]
H04Q 2213/295
.
Wavelength division multiplex [2013-01]
H04Q 2213/296
.
Packet switching [2013-01]
H04Q 2213/297
.
Coupling circuits between different (rate) TDM systems [2013-01]
H04Q 2213/298
.
Loop or ring system [2013-01]
H04Q 2213/299
.
Bus [2013-01]
H04Q 2213/301
.
Tubes and other non-linear elements with 2 electrodes, e.g. diodes [2013-01]
H04Q 2213/302
.
Magnetic elements [2013-01]
H04Q 2213/303
.
Tubes and other non-linear elements with more than two electrodes [2013-01]
H04Q 2213/304
.
Superconductors; Thermistors; Varistors [2018-01]
H04Q 2213/305
.
Transistors [2013-01]
H04Q 2213/306
.
Ferro-electric elements [2013-01]
H04Q 2213/307
.
Hall elements [2013-01]
H04Q 2213/308
.
Photo conductors; Photo elements [2013-01]
H04Q 2213/31
.
Delay devices; Circuits, e.g. shift memories [2013-01]
H04Q 2213/32
.
Logic elements [2013-01]
H04Q 2213/322
.
Integrated circuit [2013-01]
H04Q 2213/33
.
Special systems; Special service [2013-01]
H04Q 2213/331
.
Abbreviated dialing [2013-01]
H04Q 2213/332
.
Broadband system [2013-01]
H04Q 2213/333
.
Systems with earth-satellites [2013-01]
H04Q 2213/334
.
Key telephone system [2013-01]
H04Q 2213/335
.
Simulation [2013-01]
H04Q 2213/336
.
Store and forward, e.g. message switching [2013-01]
H04Q 2213/337
.
Picturephone [2013-01]
H04Q 2213/338
.
Do not disturb [2013-01]
H04Q 2213/339
.
Ciphering/encryption [2013-01]
H04Q 2213/34
.
General scheme; Position of components in an exchange [2013-01]
H04Q 2213/341
.
Contactbank connections [2013-01]
H04Q 2213/342
.
General scheme; Position of exchanges [2013-01]
H04Q 2213/343
.
Neural network [2013-01]
H04Q 2213/344
.
Overflow [2013-01]
H04Q 2213/345
.
Intelligent network [2013-01]
H04Q 2213/346
.
Switch with inverted grouping [2013-01]
H04Q 2213/347
.
Nodal network [2013-01]
H04Q 2213/348
.
Reservation of lines/channels [2013-01]
H04Q 2213/349
.
Network management; Expert system [2013-01]
H04Q 2213/35
.
Separate control and speech paths, e.g. route-searching planes [2013-01]
H04Q 2213/352
.
Self-routing switch [2013-01]
H04Q 2213/353
.
Map memory [2013-01]
H04Q 2213/36
.
Synchronisation [2013-01]
H04Q 2213/361
.
Synchronous system [2013-01]
H04Q 2213/362
.
Asynchronous system [2013-01]
H04Q 2213/363
.
Bit or pulse stuffing [2013-01]
H04Q 2213/366
.
Integrated systems, e.g. transparency [2013-01]
H04Q 2213/367
.
Multiple multiplexing; Hierarchical multiplexing [2013-01]
H04Q 2213/37
.
Operator [2013-01]
H04Q 2213/372
.
Intervention by operator; Intercepting operator [2013-01]
H04Q 2213/374
.
Paging [2013-01]
H04Q 2213/375
.
Electronic mail [2013-01]
H04Q 2213/376
.
Information service [2013-01]
H04Q 2213/377
.
Recorded announcement [2013-01]
H04Q 2213/378
.
Speech recognition; Speech analysis [2013-01]
H04Q 2213/38
.
Interexchange connections, e.g. connections of different kinds of networks [2013-01]
H04Q 2213/381
.
Pair gain system [2013-01]
H04Q 2213/382
.
Provisions for interexchange traffic in the local exchange [2013-01]
H04Q 2213/383
.
Main and subexchange, e.g. satellite exchanges [2013-01]
H04Q 2213/384
.
Inter-PBX traffic; PBX networks [2013-01]
H04Q 2213/385
.
Traffic in PBX to and from public exchange [2013-01]
H04Q 2213/386
.
Line concentrator [2013-01]
H04Q 2213/388
.
Saturation signalling system [2013-01]
H04Q 2213/39
.
Channels assigned to subscribers [2013-01]
H04Q 2213/391
.
Channel allocation to connections [2013-01]
H04Q 2213/392
.
Channel allocation - special rules [2013-01]
H04Q 2213/393
.
Channel interchanging, e.g. time slot switching [2013-01]
H04Q 2213/394
.
Channel assignment without time slot switching [2013-01]
H04Q 2213/395
.
(Semi)permanent channels, e.g. leased lines [2013-01]
H04Q 2213/396
.
Signalling in general; Special register channel [2013-01]
H04Q 2213/399
.
Virtual channel allocation [2013-01]
H04Q 2213/401
.
DC and voltages of different kinds or values [2013-01]
H04Q 2213/402
.
AC outside voice band [2013-01]
H04Q 2213/403
.
Voice frequency [2013-01]
H04Q 2213/405
.
Voice frequency current used for digit selection [2013-01]
H04Q 2213/407
.
Push-button dialling (not H04Q 2213/405) [2015-07]