CPC Definition - Subclass H04Q
This place covers:
Methods, circuits, or apparatus for selectively establishing a connection 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; and
Selective calling arrangements over connections already established.
As the scope of H04Q covers a diversity of subject matter, the user is referred to the IPC definitions for the main groups of H04Q.
The following list is intended to assist the user:
- Details of selecting apparatus arrangements, see definition for group H04Q 1/00.
- Selecting arrangements, see definition for group H04Q 3/00.
- For subscriber stations connected by the same line to the exchange, see definition for group H04Q 5/00.
- Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, see definition for H04Q 9/00.
- Selecting arrangements for multiplex systems, see definition for group H04Q 11/00.
This place does not cover:
Attention is drawn to the following places, which may be of interest for search:
In this place, the following terms or expressions are used with the meaning indicated:
Satellite | A kind of exchange the operation of which depends upon control signals received from a supervisory exchange. |
Subscriber | General term for terminal equipment, e.g. telephone for public use. |
Substation | Subscriber or monitoring equipment which may connect a single subscriber to a line without choice as to subscriber. |
Switching centres | Include exchanges and satellites. |
This place covers:
- Constructional details of selecting apparatuses or arrangements, especially and only used for telecommunications applications. Examples of such arrangements are frames, mounting racks. Examples of such details are doors, panels, pivoting parts;
- Distribution frames, provided or not with patch panels and terminal blocks;
- Methods for detection and sensing of connection of patch cables into patch panels;
- Details of cabling management for the above mentioned arrangements;
- Devices used as interface to network subscribers;
- Electrical details of selecting apparatuses, such as testing circuits for telephone line or subscriber line and arrangements for signalling troubles in unoccupied sub exchanges.
Attention is drawn to the following places, which may be of interest for search:
Cables; Conductors | |
Details of selector switches | |
Installation of communication cables or lines | |
Multiplex systems providing for calling or supervisory signals | |
Telephone substation equipment | |
Current supply arrangements for telephone systems |
In patent documents, the following abbreviations are often used:
MDF | main distribution frame |
Attention is drawn to the following places, which may be of interest for search:
Lines interfacing in the subscriber set |
Attention is drawn to the following places, which may be of interest for search:
Suppression of noise or interference in transmission systems |
This place covers:
This is a subgroup of H04Q 1/18 for electrical details of selecting apparatus or arrangements. Its scope is clear from the title. It is basically for consultation only as it is little used nowadays.
Attention is drawn to the following places, which may be of interest for search:
Power supply means for computers | |
Systems for transmission via power distribution lines | |
Current supply arrangements over Ethernet | |
Generation of signalling current at the telephone sub station | |
Subscriber line interface circuits (SLIC) | |
Over voltage protection in line interface circuits | |
Subscriber line supervision circuits e.g. off hook detection | |
Current supply arrangements for telephone systems |
In this place, the following terms or expressions are used with the meaning indicated:
BORSCHT | Battery, Over voltage, Ringing, Signalling, Coding, Hybrid, Testing |
SLIC | Subscriber Line Interface Circuit |
CPE | Customer Premise Equipment: any phone equipment (key systems, PBX's, answering machines, etc.) which reside on the customers premises |
DTMF | Dual Tone Multi Frequency |
This place covers:
This is a subgroup of H04Q 1/18 for electrical details of selecting apparatus or arrangements. It covers arrangements for providing signalling currents to telephone substations from Central Office Exchange.
This group covers the arrangements at the exchanger for providing signalling current to substation. A SLIC should provide the so called BORSCHT (Battery, Over voltage, Ringing, Signalling, Coding, Hybrid, Testing) functions: this group covers the "S" function. SLIC in general covered by H04M 3/005.Over voltage covered by H04M 3/18. Off hook detection covered by H04M 3/2272
Subgroups H04Q 1/32 - H04Q 1/50 define the type of signalling involved. Their scope is clear from the title and nevertheless are nowadays very little used. The only relevant subgroup still active is H04Q 1/4575 that covers DTMF signalling.
This place does not cover:
Attention is drawn to the following places, which may be of interest for search:
Power supply means for computers | |
Systems for transmission via power distribution lines | |
Current supply arrangements over Ethernet | |
Telephone substation equipment | |
Generation of signalling current at the telephone substation | |
Subscriber line interface circuits (SLIC) | |
Over voltage protection in line interface circuits | |
Subscriber line supervision circuits e.g. off hook detection | |
Current supply arrangements for telephone systems |
In this place, the following terms or expressions are used with the meaning indicated:
BORSCHT | Battery, Over voltage, Ringing, Signalling, Coding, Hybrid, Testing |
SLIC | Subscriber Line Interface Circuit |
CPE | Customer Premise Equipment: any phone equipment (key systems, PBX's, answering machines, etc.) which reside on the customers premises |
DTMF | Dual Tone Multi Frequency |
This place covers:
This is a subgroup of H04Q 1/18 for electrical details of selecting apparatus or arrangements. Its scope is clear from the title. It is basically for consultation only as it is little used nowadays.
Attention is drawn to the following places, which may be of interest for search:
Power supply means for computers | |
Systems for transmission via power distribution lines | |
Current supply arrangements over Ethernet | |
Generation of signaling current at the telephone substation | |
Subscriber line interface circuits (SLIC) | |
Over voltage protection in line interface circuits | |
Subscriber line supervision circuits e.g. off hook detection | |
Current supply arrangements for telephone systems |
In this place, the following terms or expressions are used with the meaning indicated:
BORSCHT | Battery, Over voltage, Ringing, Signalling, Coding, Hybrid, Testing |
SLIC | Subscriber Line Interface Circuit |
CPE | Customer Premise Equipment:any phone equipment (key systems, PBX's, answering machines, etc.) which reside on the customers premises |
DTMF | Dual Tone Multi Frequency |
This place covers:
This is a subgroup of H04Q 1/18 for electrical details of selecting apparatus or arrangements. Its scope is clear from the title. It is basically for consultation only as it is little used nowadays.
Attention is drawn to the following places, which may be of interest for search:
Power supply means for computers | |
Systems for transmission via power distribution lines | |
Current supply arrangements over Ethernet | |
Generation of signalling current at the telephone substation | |
Subscriber line supervision circuits e.g. off hook detection | |
Current supply arrangements for telephone systems |
In this place, the following terms or expressions are used with the meaning indicated:
BORSCHT | Battery, Over voltage, Ringing, Signalling, Coding, Hybrid, Testing |
SLIC | Subscriber Line Interface Circuit |
CPE | Customer Premise Equipment:any phone equipment (key systems, PBX's, answering machines, etc.) which reside on the customers premises |
DTMF | Dual Tone Multi Frequency |
This place covers:
Selecting arrangements to which subscribers are connected via wired circuit-based links.
This place does not cover:
Selecting arrangements wherein two or more subscriber stations are connected by the same line to the exchange | |
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 | |
Selecting arrangements for multiplex systems |
Attention is drawn to the following places, which may be of interest for search:
Signalling arrangements | |
Multiplex communication | |
Intermediate storage means for telegraphic communication | |
Subscriber services provided at exchanges | |
Wireless communications networks |
In this place, the following terms or expressions are used with the meaning indicated:
Narrowband | Transmission of up to 2 Mbps |
Broadband | Transmission above 2 Mbps |
In patent documents, the following abbreviations are often used:
BCSM | Basic call state model |
SIBBS | Service-independent building blocks |
PBX | Private branch exchange |
Attention is drawn to the following places, which may be of interest for search:
Circuitry specially adapted for provisions for signalling |
Attention is drawn to the following places, which may be of interest for search:
Subscriber services provided at exchanges |
Attention is drawn to the following places, which may be of interest for search:
Optical cross connects, their architectures, operation, maintenance and control, as well as their optical buffering and optical signal processing means. | |
Optical coupling means having switching means | |
Physical details of controlling the light using movable or deformable optical means | |
Physical details of light controlling devices |
Attention is drawn to the following places, which may be of interest for search:
Logic circuits in general |
Attention is drawn to the following places, which may be of interest for search:
For establishing connections among stations for the purpose of transferring information via these connections |
This place covers:
Monitoring/supervising of remote device/systems.
Collecting data from sensors
Apparatus comprising RFID in combination with sensors.
Attention is drawn to the following places, which may be of interest for search:
Toy vehicles | |
Electric circuits specially adapted for vehicles | |
Applications of remote control devices for cranes | |
Electric permutation locks | |
Electric programme-control systems | |
Input and output arrangements for digital data processing | |
Individual entry or exit registers | |
Transmission systems for measured values, control signal | |
Circuit arrangements for providing remote control of switching means in a power distribution network | |
Remote-control of tuned circuits | |
Data switching networks | |
Telephonic communication systems adapted for combination with other electrical systems | |
Receiver circuitry of television systems |
This place does not cover:
Multiplex systems |
Attention is drawn to the following places, which may be of interest for search:
Wireless communications networks |
In this place, the following terms or expressions are used with the meaning indicated:
Narrowband | Transmission of up to 2 Mbps |
Broadband | Transmission above 2 Mbps |
This place covers:
- Optical cross connects, their architectures, operation, maintenance and control, as well as their optical buffering and optical signal processing means;
- Optical signal distribution, networking, network architectures, operation, maintenance and control, wherein the optical nature of the signal is relevant to the network layers extending above the physical and data link layers;
- Networking equipment of optical distribution networks such as passive optical networks, insofar as it is relevant to the planning, design, operation, administration and maintenance of the optical distribution network (e.g. optical network units details).
- H04J 14/02 covers wavelength division optical multiplex systems, neither group takes precedence above the other for classification;
- H04L 12/56 covers packet switching systems in general. In packet switching networks where the optical property of the signal is relevant, groups from the H04L 12/56 can be used to complement the classification where relevant;
- H04L 41/00 covers the management of networks in general. When the subject-matter deals with the management of optical network, where it is relevant that the network is, groups from the H04L 41/00 can be used to complement the classification where relevant;
- H04J 3/00 covers time division multiplex systems in general, including SONET/SDH.
Attention is drawn to the following places, which may be of interest for search:
Optical coupling means having switching means | |
Physical details of controlling the light using movable or deformable optical means | |
Physical details of light controlling devices | |
Transmission and reception of optical signals per se | |
Optical time-division multiplex systems | |
WDM optical network architectures | |
WDM data center network [DCN] architectures | |
Mode multiplex optical systems | |
Using multicore fibre | |
Fibre channel networks switches |
All Indexing Codes within the group are used as an indexing system, therefore all codes should be given when relevant.
This place covers:
Details not classified in the groups H04Q 11/0005 and H04Q 11/0062, for example:
- The construction, usage and control of optical packet buffers for optical routing and switching;
- Arrangements to compress optical packets in the time domain;
- Optical packet header processing arrangements for optical routing and switching.
This place covers:
Optical cross connects, their architectures, operation, maintenance and control.
This place covers:
- Optical signal distribution, networking, network architectures, operation, maintenance and control, wherein the optical nature of the signal is relevant to the network layers extending above the physical and data link layers;
- Networking equipment of optical distribution networks such as passive optical networks, insofar as it is relevant to the planning, design, operation, administration and maintenance of the optical distribution network (e.g. optical network units details).
This place covers:
- Optical burst switching networking, network architectures, operation, maintenance and control;
- Optical networking, network architectures, operation, maintenance and control, insofar as special arrangements or techniques for processing the optical packets in the optical signal are used.
This place covers:
Interaction between the electrical and optical part of the network insofar as special arrangements or techniques are used that take advantage of the optical nature of the signals within the optical network.