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IPC-Stelle: H04M 1/658 3-Punkt Untergruppe [Version 2006.01, Sprache EN - English]

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Symbol		Titel
A Hierarchieinformationen		SECTION A — HUMAN NECESSITIES
B Hierarchieinformationen		SECTION B — PERFORMING OPERATIONS; TRANSPORTING
C Hierarchieinformationen		SECTION C — CHEMISTRY; METALLURGY
D Hierarchieinformationen		SECTION D — TEXTILES; PAPER
E Hierarchieinformationen		SECTION E — FIXED CONSTRUCTIONS
F Hierarchieinformationen		SECTION F — MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
G Hierarchieinformationen		SECTION G — PHYSICS
H Hierarchieinformationen		SECTION H — ELECTRICITY
H01 Hierarchieinformationen		BASIC ELECTRIC ELEMENTS
H02 Hierarchieinformationen		GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
H03 Hierarchieinformationen		BASIC ELECTRONIC CIRCUITRY
H04 Hierarchieinformationen		ELECTRIC COMMUNICATION TECHNIQUE
H04B Hierarchieinformationen		TRANSMISSION (transmission systems for measured values, control or similar signals G08C; speech analysis or synthesis G10L; coding, decoding or code conversion, in general H03M; broadcast communication H04H; multiplex systems H04J; secret communication H04K; transmission of digital information H04L) [4]
H04H Hierarchieinformationen		BROADCAST COMMUNICATION (transmission in general H04B; multiplex communication H04J)
H04J Hierarchieinformationen		MULTIPLEX COMMUNICATION (transmission in general H04B; peculiar to transmission of digital information H04L 5/00; systems for the simultaneous or sequential transmission of more than one television signal H04N 7/08; in exchanges H04Q 11/00; stereophonic systems H04S)
H04K Hierarchieinformationen		SECRET COMMUNICATION; JAMMING OF COMMUNICATION
H04L Hierarchieinformationen		TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (typewriters B41J; order telegraphs, fire or police telegraphs G08B; visual telegraphy G08B, G08C; teleautographic systems G08C; ciphering or deciphering apparatus per seG09C; coding, decoding or code conversion, in general H03M; arrangements common to telegraphic and telephonic communication H04M; selecting H04Q) [4]
H04M Hierarchieinformationen		TELEPHONIC COMMUNICATION (counting mechanisms G06M; circuits for controlling other apparatus via a telephone cable and not involving telephone switching apparatus G08; reels or other take-up devices for cords H02G 11/00; multiplex transmission between switching centres H04J; selecting arrangements H04Q; loudspeakers, microphones, gramophone pick-ups or like electromechanical transducers H04R)
H04M 1/00 Hierarchieinformationen		Substation equipment, e.g. for use by subscribers (subscriber services or facilities provided at exchanges H04M 3/00; prepayment telephone coin boxes H04M 17/00; current supply arrangements H04M 19/08; keyboard switches in general H01H 13/70, H03K 17/94) [1, 7]
H04M 1/02 Hierarchieinformationen		. Constructional features of telephone sets
H04M 1/03 Hierarchieinformationen		. . Constructional features of telephone transmitters or receivers, e.g. telephone hand-sets (transducers in general H04R 1/00) [2]
H04M 1/04 Hierarchieinformationen		. . Supports for telephone transmitters or receivers (for transducers in general H04R 1/00)
H04M 1/05 Hierarchieinformationen		. . . adapted for use on head, throat, or breast
H04M 1/06 Hierarchieinformationen		. . . Hooks; Cradles
H04M 1/08 Hierarchieinformationen		. . . . associated with switches operated by weight of receiver or hand-set
H04M 1/10 Hierarchieinformationen		. . . . associated with switches operated by magnetic effect due to proximity of receiver or hand-set
H04M 1/11 Hierarchieinformationen		. . Supports for sets, e.g. incorporating armrests
H04M 1/12 Hierarchieinformationen		. . . Adjustable supports, e.g. extensible
H04M 1/13 Hierarchieinformationen		. . . . pantographic
H04M 1/14 Hierarchieinformationen		. . . with resilient means to eliminate extraneous vibrations
H04M 1/15 Hierarchieinformationen		. . Protection or guiding telephone cords (devices specially adapted or mounted for storing and repeatedly paying-out and restoring lengths of material B65H 75/34; in general H02G 11/00) [5]
H04M 1/17 Hierarchieinformationen		. . Hygienic or sanitary devices on telephone equipment (for mouthpieces or earpieces H04R 1/12) [2]
H04M 1/18 Hierarchieinformationen		. . Telephone sets modified for use in ships, mines, or other places exposed to adverse environment (H04M 1/19 takes precedence; telephone cabinets E04H 1/14)
H04M 1/19 Hierarchieinformationen		. . Arrangements of transmitters, receivers, or complete sets to prevent eavesdropping, to attenuate local noise or to prevent undesired transmission; Special mouthpieces or receivers therefor (circuit arrangements for preventing eavesdropping H04M 1/68; telephone cabinets E04H 1/14)
H04M 1/20 Hierarchieinformationen		. . Arrangements for preventing acoustic feedback (H04M 1/62 takes precedence)
H04M 1/21 Hierarchieinformationen		. . Combinations with auxiliary equipment, e.g. with clock, with memoranda pad
H04M 1/215 Hierarchieinformationen		. . . by non-intrusive coupling means, e.g. acoustic couplers [7]
H04M 1/22 Hierarchieinformationen		. . Illuminating; Arrangements for improving visibility of characters on dials
H04M 1/23 Hierarchieinformationen		. . Construction or mounting of dials or of equivalent devices; Means for facilitating the use thereof (by improving visibility H04M 1/22)
H04M 1/24 Hierarchieinformationen		. Arrangements for testing (measuring electric values G01R; testing transducers H04R 29/00)
H04M 1/247 Hierarchieinformationen		. Telephone sets including user guidance or feature selection means facilitating their use [7]
H04M 1/253 Hierarchieinformationen		. Telephone sets using digital voice transmission (simultaneous speech and data transmission H04M 11/06) [7]
H04M 1/26 Hierarchieinformationen		. Devices for calling a subscriber (H04M 1/66 takes precedence; coding in connection with keyboards or like devices, in general H03M 11/00) [1, 7]
H04M 1/27 Hierarchieinformationen		. . Devices whereby a plurality of signals may be stored simultaneously [2]
H04M 1/272 Hierarchieinformationen		. . . with provision for storing only one subscriber number at a time, e.g. by keyboard or dial [2]
H04M 1/274 Hierarchieinformationen		. . . with provision for storing more than one subscriber number at a time, e.g. using toothed disc [2]
H04M 1/2745 Hierarchieinformationen		. . . . using static electronic memories, i.e. memories whose operation does not require relative movement between storage means and a transducer, e.g. chip [7]
H04M 1/275 Hierarchieinformationen		. . . . . implemented by means of portable electronic directories [7]
H04M 1/2755 Hierarchieinformationen		. . . . . whose contents are provided by optical scanning [7]
H04M 1/276 Hierarchieinformationen		. . . . using magnetic recording, e.g. on tape [2]
H04M 1/278 Hierarchieinformationen		. . . . using punched cards or tapes [2]
H04M 1/30 Hierarchieinformationen		. . Devices which can set up and transmit only one digit at a time
H04M 1/31 Hierarchieinformationen		. . . by interrupting current to generate trains of pulses; by periodically opening and closing contacts to generate trains of pulses [2]
H04M 1/315 Hierarchieinformationen		. . . . Clutches, spring assemblies, speed regulators, e.g. centrifugal brakes (H04M 1/32-H04M 1/40 take precedence) [3]
H04M 1/32 Hierarchieinformationen		. . . . Locking setting devices during transmission to prevent interference by user
H04M 1/34 Hierarchieinformationen		. . . . Lost-motion or other arrangements for ensuring a pause between successive digit transmissions
H04M 1/38 Hierarchieinformationen		. . . . Pulses transmitted by a movement variably limited by the setting of a stop
H04M 1/40 Hierarchieinformationen		. . . . wherein the setting-operation short-circuits or open-circuits the transmitting mechanism during a variable part of a cycle
H04M 1/50 Hierarchieinformationen		. . . by generating or selecting currents of predetermined frequencies or combinations of frequencies [2]
H04M 1/515 Hierarchieinformationen		. . by generating or selecting other signals than trains of pulses of similar shape or other signals than currents of one or more different frequencies, e.g. generation of dc signals of alternating polarity, coded pulses, impedance dialling [2]
H04M 1/52 Hierarchieinformationen		. . Arrangements wherein a dial or equivalent is mechanically coupled to a line selector
H04M 1/53 Hierarchieinformationen		. . Generation of additional signals, e.g. additional pulses [2]
H04M 1/54 Hierarchieinformationen		. . . Arrangements wherein a dial or equivalent generates identifying signals, e.g. in party-line systems [2]
H04M 1/56 Hierarchieinformationen		. Arrangements for indicating or recording the called number at the calling subscriber's set
H04M 1/57 Hierarchieinformationen		. Arrangements for indicating or recording the number of the calling subscriber at the called subscriber's set (at the operator set in a manual exchange H04M 5/20) [2]
H04M 1/58 Hierarchieinformationen		. Anti-side-tone circuits (hybrid circuits for carrier-frequency operation H04B 1/00)
H04M 1/60 Hierarchieinformationen		. including speech amplifiers
H04M 1/62 Hierarchieinformationen		. . Constructional arrangements
H04M 1/64 Hierarchieinformationen		. Automatic arrangements for answering calls; Automatic arrangements for recording messages for absent subscribers; Arrangements for recording conversations (centralised dictation systems H04M 11/10) [1, 7]
H04M 1/65 Hierarchieinformationen		. . Recording arrangements [2, 7]
H04M 1/652 Hierarchieinformationen		. . . Means for playing back the recorded messages by remote control over a telephone line (H04M 1/658 takes precedence) [7]
H04M 1/654 Hierarchieinformationen		. . . Telephone line monitoring circuits therefor, e.g. ring detectors [7]
H04M 1/656 Hierarchieinformationen		. . . for recording conversations [7]
H04M 1/658 Hierarchieinformationen		. . . Means for redirecting recorded messages to other extensions or equipment [7]
H04M 1/66 Hierarchieinformationen		. with means for preventing unauthorised or fraudulent calling (verifying user identity or authority in secret or secure digital communications H04L 9/32) [1, 7]
H04M 1/663 Hierarchieinformationen		. . Preventing unauthorised calls to a telephone set [7]
H04M 1/665 Hierarchieinformationen		. . . by checking the validity of a code [7]
H04M 1/667 Hierarchieinformationen		. . Preventing unauthorised calls from a telephone set (H04M 1/677 takes precedence) [7]
H04M 1/67 Hierarchieinformationen		. . . by electronic means [7]
H04M 1/673 Hierarchieinformationen		. . . . the user being required to key in a code [7]
H04M 1/675 Hierarchieinformationen		. . . . the user being required to insert a coded card, e.g. a smart card carrying an integrated circuit chip [7]
H04M 1/677 Hierarchieinformationen		. . Preventing the dialling or sending of predetermined telephone numbers or selected types of telephone numbers, e.g. long distance [7]
H04M 1/68 Hierarchieinformationen		. Circuit arrangements for preventing eavesdropping
H04M 1/70 Hierarchieinformationen		. . Lock-out or secrecy arrangements in party-line systems
H04M 1/72 Hierarchieinformationen		. Substation extension arrangements; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selecting [1, 7]
H04M 1/723 Hierarchieinformationen		. . using two or more extensions per line (H04M 1/725 takes precedence) [7]
H04M 1/725 Hierarchieinformationen		. . Cordless telephones [7]
H04M 1/727 Hierarchieinformationen		. . . Identification code transfer arrangements [7]
H04M 1/73 Hierarchieinformationen		. . . Battery saving arrangements [7]
H04M 1/733 Hierarchieinformationen		. . . with a plurality of base stations connected to a plurality of lines [7]
H04M 1/737 Hierarchieinformationen		. . . characterised by transmission of electromagnetic waves other than radio waves, e.g. infra-red [7]
H04M 1/738 Hierarchieinformationen		. Interface circuits for coupling substations to external telephone lines (H04M 1/78 takes precedence) [7]
H04M 1/74 Hierarchieinformationen		. . with means for reducing interference; with means for reducing effects due to line faults
H04M 1/76 Hierarchieinformationen		. . Compensating for differences in line impedance (in general H04B)
H04M 1/78 Hierarchieinformationen		. Circuit arrangements in which low-frequency speech signals proceed in one direction on the line, while speech signals proceeding in the other direction on the line are modulated on a high-frequency carrier signal (repeater circuits H04B 3/38) [2]
H04M 1/80 Hierarchieinformationen		. Telephone line holding circuits [7]
H04M 1/82 Hierarchieinformationen		. Line monitoring circuits for call progress or status discrimination [7]
H04M 3/00 Hierarchieinformationen		Automatic or semi-automatic exchanges
H04M 5/00 Hierarchieinformationen		Manual exchanges (substation equipment in general H04M 1/00)
H04M 7/00 Hierarchieinformationen		Interconnection arrangements between switching centres (transmission arrangements in general H04B)
H04M 9/00 Hierarchieinformationen		Interconnection arrangements not involving centralised switching
H04M 11/00 Hierarchieinformationen		Telephonic communication systems adapted for combination with other electrical systems
H04M 13/00 Hierarchieinformationen		Party-line systems (substation equipment H04M 1/00; exchange equipment H04M 3/00, H04M 5/00; metering arrangements H04M 15/36)
H04M 15/00 Hierarchieinformationen		Metering arrangements; Time-controlling arrangements; Time-indicating arrangements
H04M 17/00 Hierarchieinformationen		Prepayment telephone systems (using a coded card to authorise calls from a telephone set H04M 1/675) [1, 7]
H04M 19/00 Hierarchieinformationen		Current supply arrangements for telephone systems (for selecting equipment H04Q 1/28)
H04M 99/00 Hierarchieinformationen		Subject matter not provided for in other groups of this subclass [2006.01]
H04N Hierarchieinformationen		PICTORIAL COMMUNICATION, e.g. TELEVISION (measuring, testing G01; systems for autographic writing, e.g. writing telegraphy, which involve following an outline G08; information storage based on relative movement between record carrier and transducer G11B; coding, decoding or code conversion, in general H03M; broadcast distribution or the recording of use made thereof H04H) [4]
H04Q Hierarchieinformationen		SELECTING (switches, relays, selectors H01H; electronic switches H03K 17/00)
H04R Hierarchieinformationen		LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS (generating mechanical vibrations in general B06B; transducers for measuring particular variables G01; transducers in clocks G04; producing sounds with frequency not determined by supply frequency G10K; transducers in recording or reproducing heads G11B; transducers in motors H02) [6]
H04S Hierarchieinformationen		STEREOPHONIC SYSTEMS (information storage on discs or tapes G11B; broadcast systems for the distribution of stereophonic information H04H 5/00; multiplex systems in general H04J) [3]
H05 Hierarchieinformationen		ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
H99 Hierarchieinformationen		SUBJECT MATTER NOT OTHERWISE PROVIDED FOR IN THIS SECTION [2006.01]

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