IPC-Stelle: H04M 9/02 [Version 2017.01]

SymbolTypTitel
HSKELECTRICITY
H04KLELECTRIC COMMUNICATION TECHNIQUE
H04MUKLTELEPHONIC COMMUNICATION (circuits for controlling other apparatus via a telephone cable and not involving telephone switching apparatus G08)
H04M 1/00HGRSubstation 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) [1, 7, 2006.01]
H04M 1/02UGR1
.Constructional features of telephone sets [1, 2006.01]
H04M 1/03UGR2
. .Constructional features of telephone transmitters or receivers, e.g. telephone hand-sets [2, 2006.01]
H04M 1/04UGR2
. .Supports for telephone transmitters or receivers [1, 2006.01]
H04M 1/05UGR3
. . .specially adapted for use on head, throat or breast [1, 2006.01]
H04M 1/06UGR3
. . .Hooks; Cradles [1, 2006.01]
H04M 1/08UGR4
. . . .associated with switches operated by the weight of the receiver or hand-set [1, 2006.01]
H04M 1/10UGR4
. . . .associated with switches operated by magnetic effect due to proximity of receiver or hand-set [1, 2006.01]
H04M 1/11UGR2
. .Supports for sets, e.g. incorporating armrests [1, 2006.01]
H04M 1/12UGR3
. . .Adjustable supports, e.g. extensible [1, 2006.01]
H04M 1/13UGR4
. . . .pantographic [1, 2006.01]
H04M 1/14UGR3
. . .with resilient means to eliminate extraneous vibrations [1, 2006.01]
H04M 1/15UGR2
. .Protecting or guiding telephone cords [1, 5, 2006.01]
H04M 1/17UGR2
. .Hygienic or sanitary devices on telephone equipment (for mouthpieces or earpieces H04R 1/12) [2, 2006.01]
H04M 1/18UGR2
. .Telephone sets specially adapted for use in ships, mines, or other places exposed to adverse environment (H04M 1/19 takes precedence) [1, 2006.01]
H04M 1/19UGR2
. .Arrangements of transmitters, receivers, or complete sets to prevent eavesdropping, to attenuate local noise or to prevent undesired transmission; Mouthpieces or receivers specially adapted therefor (circuit arrangements for preventing eavesdropping H04M 1/68; telephone cabinets E04H 1/14) [1, 2006.01]
H04M 1/20UGR2
. .Arrangements for preventing acoustic feedback (H04M 1/62 takes precedence) [1, 2006.01]
H04M 1/21UGR2
. .Combinations with auxiliary equipment, e.g. with clocks or memoranda pads [1, 2006.01]
H04M 1/215UGR3
. . .by non-intrusive coupling means, e.g. acoustic couplers [7, 2006.01]
H04M 1/22UGR2
. .Illumination; Arrangements for improving the visibility of characters on dials [1, 2006.01]
H04M 1/23UGR2
. .Construction or mounting of dials or of equivalent devices; Means for facilitating the use thereof (by improving visibility H04M 1/22) [1, 2006.01]
H04M 1/24UGR1
.Arrangements for testing [1, 2006.01]
H04M 1/247UGR1
.Telephone sets including user guidance or feature selection means facilitating their use [7, 2006.01]
H04M 1/253UGR1
.Telephone sets using digital voice transmission [7, 2006.01]
H04M 1/26UGR1
.Devices for calling a subscriber (H04M 1/66 takes precedence) [1, 7, 2006.01]
H04M 1/27UGR2
. .Devices whereby a plurality of signals may be stored simultaneously [2, 2006.01]
H04M 1/272UGR3
. . .with provision for storing only one subscriber number at a time, e.g. by keyboard or dial [2, 2006.01]
H04M 1/274UGR3
. . .with provision for storing more than one subscriber number at a time [2, 2006.01]
H04M 1/2745UGR4
. . . .using static electronic memories, i.e. memories whose operation does not require relative movement between storage means and a transducer, e.g. chips [7, 2006.01]
H04M 1/275UGR5
. . . . .implemented by means of portable electronic directories [7, 2006.01]
H04M 1/2755UGR5
. . . . .whose contents are provided by optical scanning [7, 2006.01]
H04M 1/276UGR4
. . . .using magnetic recording, e.g. on tape [2, 2006.01]
H04M 1/278UGR4
. . . .using punched cards or tapes [2, 2006.01]
H04M 1/30UGR2
. .Devices which can set up and transmit only one digit at a time [1, 2006.01]
H04M 1/31UGR3
. . .by interrupting current to generate trains of pulses; by periodically opening and closing contacts to generate trains of pulses [2, 2006.01]
H04M 1/315UGR4
. . . .Clutches; Spring assemblies; Speed regulators, e.g. centrifugal brakes (H04M 1/32-H04M 1/40 take precedence) [3, 2006.01]
H04M 1/32UGR4
. . . .Locking setting devices during transmission to prevent interference by user [1, 2006.01]
H04M 1/34UGR4
. . . .Lost-motion or other arrangements for ensuring a pause between successive digit transmissions [1, 2006.01]
H04M 1/38UGR4H04M 1/64
. . . .Pulses transmitted by a movement variably limited by the setting of a stop [1, 2006.01]UGR1
.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, 2006.01]
H04M 1/65UGR2
. .Recording arrangements [2, 7, 2006.01]
H04M 1/652UGR3
. . .Means for playing back the recorded messages by remote control over a telephone line (H04M 1/658 takes precedence) [7, 2006.01]
H04M 1/654UGR3
. . .Telephone line monitoring circuits therefor, e.g. ring detectors [7, 2006.01]
H04M 1/656UGR3
. . .for recording conversations [7, 2006.01]
H04M 1/658UGR3
. . .Means for redirecting recorded messages to other extensions or equipment [7, 2006.01]
H04M 1/66UGR1
.with means for preventing unauthorised or fraudulent calling (verifying user identity or authority in secret or secure digital communications H04L 9/32) [1, 7, 2006.01]
H04M 1/663UGR2
. .Preventing unauthorised calls to a telephone set [7, 2006.01]
H04M 1/665UGR3
. . .by checking the validity of a code [7, 2006.01]
H04M 1/667UGR2
. .Preventing unauthorised calls from a telephone set (H04M 1/677 takes precedence) [7, 2006.01]
H04M 1/67UGR3
. . .by electronic means [7, 2006.01]
H04M 1/673UGR4
. . . .the user being required to key in a code [7, 2006.01]
H04M 1/675UGR4
. . . .the user being required to insert a coded card, e.g. a smart card carrying an integrated circuit chip [7, 2006.01]
H04M 1/677UGR2
. .Preventing the dialling or sending of predetermined telephone numbers or selected types of telephone numbers, e.g. long distance numbers [7, 2006.01]
H04M 1/68UGR1
.Circuit arrangements for preventing eavesdropping [1, 2006.01]
H04M 1/70UGR2
. .Lock-out or secrecy arrangements in party-line systems [1, 2006.01]
H04M 1/72UGR1
.Substation extension arrangements; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selecting [1, 7, 2006.01]
H04M 1/723UGR2
. .using two or more extensions per line (H04M 1/725 takes precedence) [7, 2006.01]
H04M 1/725UGR2
. .Cordless telephones [7, 2006.01]
H04M 1/727UGR3
. . .Identification code transfer arrangements [7, 2006.01]
H04M 1/73UGR3
. . .Battery saving arrangements [7, 2006.01]
H04M 1/733UGR3
. . .with a plurality of base stations connected to a plurality of lines [7, 2006.01]
H04M 1/737UGR3
. . .characterised by transmission of electromagnetic waves other than radio waves, e.g. infra-red waves [7, 2006.01]
H04M 1/738UGR1
.Interface circuits for coupling substations to external telephone lines (H04M 1/78 takes precedence) [7, 2006.01]
H04M 1/74UGR2
. .with means for reducing interference; with means for reducing effects due to line faults [1, 2006.01]
H04M 1/76UGR2
. .Compensating for differences in line impedance [1, 2006.01]
H04M 1/78UGR1
.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 [2, 2006.01]
H04M 1/80UGR1
.Telephone line holding circuits [7, 2006.01]
H04M 1/82UGR1
.Line monitoring circuits for call progress or status discrimination [7, 2006.01]
H04M 3/00HGRAutomatic or semi-automatic exchanges [1, 2006.01]
H04M 3/02UGR1
.Calling substations, e.g. by ringing (selective calling H04Q) [1, 2006.01]
H04M 3/04UGR2
. .the calling signal being supplied from the final selector [1, 2006.01]
H04M 3/06UGR2
. .the calling signal being supplied from the subscriber's line circuit [1, 2006.01]
H04M 3/08UGR1
.Indicating faults in circuits or apparatus [1, 2006.01]
H04M 3/10UGR2
. .Providing fault- or trouble-signals [1, 2006.01]
H04M 3/12UGR2
. .Marking faulty circuits "busy"; Enabling equipment to disengage itself from faulty circuits [1, 2006.01]
H04M 3/14UGR2
. .Signalling existence of persistent "off-hook" condition [1, 2006.01]
H04M 3/16UGR1
.with lock-out or secrecy provision in party-line systems [1, 2006.01]
H04M 3/18UGR1
.with means for reducing interference; with means for reducing effects due to line faults [1, 2006.01]
H04M 3/20UGR1
.with means for interrupting existing connections; with means for breaking-in on conversations [1, 2006.01]
H04M 3/22UGR1
.Arrangements for supervision, monitoring or testing [1, 2006.01]
H04M 3/24UGR2
. .with provision for checking the normal operation [1, 2006.01]
H04M 3/26UGR2
. .with means for applying test signals [1, 2006.01]
H04M 3/28UGR3
. . .Automatic routine testing [1, 2006.01]
H04M 3/30UGR4
. . . .for subscribers' lines [1, 2006.01]
H04M 3/32UGR4
. . . .for lines between exchanges [1, 2006.01]
H04M 3/34UGR3
. . .Testing for cross-talk [1, 2006.01]
H04M 3/36UGR2
. .Statistical metering, e.g. recording occasions when traffic exceeds capacity of trunks [1, 2006.01]
H04M 3/38UGR1
.Graded-service arrangements, i.e. some subscribers prevented from establishing certain connections (queuing arrangements H04Q 3/64) [1, 2006.01]
H04M 3/40UGR1
.Applications of speech amplifiers [1, 2006.01]
H04M 3/42UGR1
.Systems providing special services or facilities to subscribers (specially adapted for wireless communication networks H04W 4/00) [1, 2006.01]
H04M 3/424UGR2
. .Arrangements for automatic redialling (at the subscriber's set H04M 1/27) [7, 2006.01]
H04M 3/428UGR2
. .Arrangements for placing incoming calls on hold [7, 2006.01]
H04M 3/432UGR2
. .Arrangements for calling a subscriber at a specific time, e.g. morning call service [7, 2006.01]
H04M 3/436UGR2
. .Arrangements for screening incoming calls [7, 2006.01]
H04M 3/44UGR2
. .Additional connecting arrangements for providing access to frequently-wanted subscribers, e.g. abbreviated dialling (at the subscriber's set H04M 1/27; automatic redialling H04M 3/424) [1, 7, 2006.01]
H04M 3/46UGR2
. .Arrangements for calling a number of substations in a predetermined sequence until an answer is obtained [1, 2006.01]
H04M 3/48UGR2
. .Arrangements for recalling a calling subscriber when the wanted subscriber ceases to be busy [1, 2006.01]
H04M 3/487UGR2
. .Arrangements for providing information services, e.g. recorded voice services or time announcements [7, 2006.01]
H04M 3/493UGR3
. . .Interactive information services, e.g. directory enquiries [7, 2006.01]
H04M 3/50UGR2
. .Centralised arrangements for answering calls; Centralised arrangements for recording messages for absent or busy subscribers (H04M 3/487 takes precedence; centralised dictation systems H04M 11/10) [1, 7, 2006.01]
H04M 3/51UGR3
. . .Centralised call answering arrangements requiring operator intervention [7, 2006.01]
H04M 3/52UGR4
. . . .Arrangements for routing dead number calls to operators [1, 2006.01]
H04M 3/523UGR4
. . . .with call distribution or queuing [7, 2006.01]
H04M 3/527UGR3
. . .Centralised call answering arrangements not requiring operator intervention [7, 2006.01]
H04M 3/53UGR3
. . .Centralised arrangements for recording incoming messages [7, 2006.01]
H04M 3/533UGR4
. . . .Voice mail systems [7, 2006.01]
H04M 3/537UGR4
. . . .Arrangements for indicating the presence of a recorded message [7, 2006.01]
H04M 3/54UGR2
. .Arrangements for diverting calls for one subscriber to another predetermined subscriber [1, 2006.01]
H04M 3/56UGR2
. .Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities (video conference systems H04N 7/15) [1, 2006.01]
H04M 3/58UGR2
. .Arrangements for transferring received calls from one subscriber to another; Arrangements affording interim conversations between either the calling or the called party and a third party (substation line holding circuits H04M 1/80) [1, 7, 2006.01]
H04M 3/60UGR1
.Semi-automatic systems, i.e. systems in which the numerical selection of the outgoing line is under the control of an operator [1, 2006.01]
H04M 3/62UGR2
. .Keyboard equipment [1, 2006.01]
H04M 3/64UGR2
. .Arrangements for signalling the number or class of the calling line to the operator (between operators in inter-exchange working H04M 5/18) [1, 2006.01]
H04M 5/00HGRManual exchanges (substation equipment in general H04M 1/00) [1, 2006.01]
H04M 5/02UGR1
.Constructional details (jacks, jack-plugs H01R 24/58) [1, 2006.01]
H04M 5/04UGR1
.Arrangements for indicating calls or supervising connections for calling or clearing [1, 2006.01]
H04M 5/06UGR2
. .affording automatic call distribution [1, 2006.01]
H04M 5/08UGR1
.using connecting means other than cords [1, 2006.01]
H04M 5/10UGR1
.using separate plug for each subscriber [1, 2006.01]
H04M 5/12UGR1
.Calling substations, e.g. by ringing [1, 2006.01]
H04M 5/14UGR1
.Applications of speech amplifiers [1, 2006.01]
H04M 5/16UGR1
.with means for reducing interference; with means for reducing effects due to line faults [1, 2006.01]
H04M 5/18UGR1
.Arrangements for signalling the class or number of called or calling line from one exchange to another [1, 2006.01]
H04M 5/20UGR2
. .Arrangements for indicating the numbers of the incoming lines [1, 2006.01]
H04M 7/00HGRArrangements for interconnection between switching centres [1, 2006.01]
H04M 7/02UGR1
.for compensating differences of ground potential [1, 2006.01]
H04M 7/04UGR1
.for compensating differences of line impedance [1, 2006.01]
H04M 7/06UGR1
.using auxiliary connections for control or supervision [1, 2006.01]
H04M 7/08UGR1
.for phantom working [1, 2006.01]
H04M 7/10UGR1
.for two-way working, i.e. calls may be set-up in either direction over the same connection [1, 2006.01]
H04M 7/12UGR1
.for working between exchanges having different types of switching equipment, e.g. power-driven and step by step or decimal and non-decimal [1, 2006.01]
H04M 7/14UGR1
.in systems involving main and subordinate switching centres (current supply source at subordinate switching centre charged from main exchange H04M 19/06) [1, 2006.01]
H04M 7/16UGR1
.in systems employing carrier frequencies [1, 2006.01]
H04M 9/00HGRArrangements for interconnection not involving centralised switching [1, 2006.01]
H04M 9/02UGR1
.involving a common line for all parties [1, 2006.01]
H04M 9/04UGR1
.involving a separate line for each pair of parties [1, 2006.01]
H04M 9/06UGR1
.involving combinations of interconnecting lines [1, 2006.01]
H04M 9/08UGR1
.Two-way loud-speaking telephone systems with means for conditioning the signal, e.g.  for suppressing echoes for one or both directions of traffic [1, 2006.01]
H04M 9/10UGR2
. .with switching of direction of transmission by voice frequency [1, 2006.01]
H04M 11/00HGRTelephonic communication systems specially adapted for combination with other electrical systems [1, 2006.01]
H04M 11/02UGR1
.with bell or annunciator systems [1, 2006.01]
H04M 11/04UGR1
.with alarm systems, e.g. fire, police or burglar alarm systems [1, 2006.01]
H04M 11/06UGR1
.Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors [1, 2006.01]
H04M 11/08UGR1
.specially adapted for optional reception of entertainment or informative matter [1, 2006.01]
H04M 11/10UGR1
.with dictation recording and playback systems [1, 2006.01]
H04M 13/00HGRParty-line systems (substation equipment H04M 1/00; exchange equipment H04M 3/00, H04M 5/00; metering arrangements H04M 15/36) [1, 2006.01]
H04M 15/00HGRArrangements for metering, time-control or time-indication [1, 2006.01]
H04M 15/02UGR1
.Severing connection after a predetermined time [1, 2006.01]
H04M 15/04UGR1
.Recording calls in printed, perforated, or other permanent form [1, 2006.01]
H04M 15/06UGR2
. .Recording class or number of calling party or called party [1, 2006.01]
H04M 15/08UGR1
.Metering calls to called party [1, 2006.01]
H04M 15/10UGR1
.Metering calls from calling party [1, 2006.01]
H04M 15/12UGR2
. .Discriminative metering [1, 2006.01]
H04M 15/14UGR3
. . .according to class of calling party [1, 2006.01]
H04M 15/16UGR3
. . .according to connection obtained [1, 2006.01]
H04M 15/18UGR3
. . .according to duration of call [1, 2006.01]
H04M 15/20UGR4
. . . .Operator's time recording or indicating arrangements [1, 2006.01]
H04M 15/22UGR3
. . .according to time of day [1, 2006.01]
H04M 15/24UGR3
. . .preventing metering of tax-free calls to certain lines, e.g. to fire or ambulance stations [1, 2006.01]
H04M 15/26UGR2
. .with a meter at the exchange controlled by an operator [1, 2006.01]
H04M 15/28UGR1
.with meter at substation [1, 2006.01]
H04M 15/30UGR2
. .the meter not being controlled from an exchange [1, 2006.01]
H04M 15/32UGR1
.Metering arrangements for satellites or concentrators which connect one or more exchange lines with a group of local lines [1, 2006.01]
H04M 15/34UGR1
.Metering arrangements for private branch exchanges [1, 2006.01]
H04M 15/36UGR1
.Metering arrangements for party-lines [1, 2006.01]
H04M 15/38UGR1
.Metering by apparatus other than mechanical step-by-step counter type [1, 2006.01]
H04M 17/00HGRPrepayment telephone systems (using a coded card to authorise calls from a telephone set H04M 1/675) [1, 7, 2006.01]
H04M 17/02UGR1
.Coin-freed or check-freed systems [1, 2006.01]
H04M 19/00HGRCurrent supply arrangements for telephone systems (for selecting equipment H04Q 1/28) [1, 2006.01]
H04M 19/02UGR1
.providing ringing current or supervisory tones, e.g. dialling tone or busy tone [1, 2006.01]
H04M 19/04UGR2
. .the ringing-current being generated at the substations [1, 2006.01]
H04M 19/06UGR1
.in which current supply sources at subordinate switching centres are charged from the main exchange [1, 2006.01]
H04M 19/08UGR1
.with current supply sources at the substations (generating ringing current H04M 19/04) [1, 7, 2006.01]
H04M 99/00HGRSubject matter not provided for in other groups of this subclass [2006.01]