Telephonic Communications Patents (Class 379)
- Of audio message storage and retrieval (Class 379/1.02)
- Of data transmission (Class 379/1.03)
- Including fault responsive disconnection of tested component (Class 379/2)
- Of hybrid or echo suppressor or canceller (Class 379/3)
- Of repeater (Class 379/4)
- For detection of eavesdropping device (Class 379/7)
- With blocking of normal usage (Class 379/8)
- Of centralized switching system (Class 379/9)
- Using portable test set (e.g., handset type) (Class 379/21)
- Of trunk or long line (Class 379/22)
- Testing of network terminating interface, subscriber trunk interface, or service function (Class 379/26.01)
- Testing of subscriber loop or terminal (Class 379/27.01)
- Monitoring (Class 379/32.01)
- Personal monitoring (e.g., for the ill or infirm) (Class 379/38)
- Responsive to sensed nonsystem condition (Class 379/39)
- Central office responsive to emergency call or alarm (e.g., "911", operator position display) (Class 379/45)
- Called line or station condition responsive (e.g., recall if busy) (Class 379/46)
- Plural alarms over single line (Class 379/47)
- Announcement or alarm received at terminal station (e.g., "butt-in", alarm) (Class 379/48)
- Central station with plural substations (Class 379/49)
- By pulse or digital signal (Class 379/50)
- With automatic dialing or transmission of recorded audio message (Class 379/51)
- Dynamic audio signal recording or reproduction (Class 379/68)
- Voice activation or recognition (Class 379/88.01)
- Multilingual system or operation (Class 379/88.05)
- Digital signal processing (DSP) (Class 379/88.07)
- Message signal analysis (Class 379/88.08)
- Display of message related information (Class 379/88.11)
- Indication or notification of message (Class 379/88.12)
- Multimedia system (e.g., voice output combined with fax, video, text, etc.) (Class 379/88.13)
- Voice message synthesis (Class 379/88.16)
- Interaction with an external nontelephone network (e.g., Internet) (Class 379/88.17)
- Interacting voice message systems (Class 379/88.18)
- Call source identification (Class 379/88.19)
- Message management (Class 379/88.22)
- Credit authorization (Class 379/91.01)
- Polling (Class 379/92.01)
- Having transmission of a digital message signal over a telephone line (Class 379/93.01)
- To produce visual-graphic copy (e.g., facsimile) (Class 379/100.01)
- Audio program distribution (Class 379/101.01)
- Remote control (Class 379/102.01)
- Remote indication over telephone line (e.g., telemetry) (Class 379/106.01)
- Telegraphy (Class 379/108.01)
- Blocking caller ID transmission (Class 379/142.02)
- Extracting call ID from transmitted signal (Class 379/142.04)
- Routing an incoming call on multiple lines to a particular appliance (e.g., facsimile, computer, or telephone) (Class 379/142.07)
- Call waiting associated with caller ID information (Class 379/142.08)
- Non-assigned telephone number indication (Class 379/142.09)
- Caller location indication (e.g., city, state, etc.) (Class 379/142.1)
- Caller local time indication (Class 379/142.11)
- Including master-slave modules, parent-child terminals, or controller-adjunct units (Class 379/142.12)
- Adaptive module coupled to telephone line or telephone device (Class 379/142.13)
- Connecting to an external information processing terminal (e.g., computer) (Class 379/142.15)
- Having broadband premise equipment (e.g., TV) (Class 379/142.16)
- Having display unit (Class 379/142.17)
- Including DTMF signal (Class 379/142.18)
- With special service (Class 379/157)
- With intercom system (Class 379/159)
- With exclusion or priority feature (e.g., lockout or privacy) (Class 379/161)
- Detail of hold circuitry (Class 379/162)
- Line status indication or call alerting (Class 379/164)
- Switching or supervision feature (e.g., common control, digital) (Class 379/165)
- Detail of line circuit or line card (Class 379/166)
- At collective house (Class 379/167.02)
- At booth (e.g., at theater, gas station, etc.) (Class 379/167.03)
- Doorbell system (Class 379/167.05)
- Having telephone adaptor system (Class 379/167.13)
- Two-way voice channel (Class 379/167.14)
- Having transducer circuitry (Class 379/167.15)
- Lockout (Class 379/168)
- With paging (Class 379/170)
- Having plural stations with selective calling (e.g., master) (Class 379/171)
- With call addressing (Class 379/173)
- Including body or apparel supported terminal (e.g., headgear) (Class 379/174)
- With central power source (Class 379/176)
- Service profile (e.g., calling service) (Class 379/201.02)
- Locating using diverse technology (e.g., using infrared badge, sensor, card reader) (Class 379/201.06)
- Anonymous party (e.g., protection of called or calling party's identity, privacy) (Class 379/201.11)
- Provisioning (Class 379/201.12)
- Conferencing (Class 379/202.01)
- Three-way calling (Class 379/207.01)
- Service trigger (activation or deactivation) (Class 379/207.02)
- Priority override (e.g., butt-in) (Class 379/208.01)
- Repetitive call attempts (e.g., camp-on-busy, retry) (Class 379/209.01)
- Reserved call (e.g., return call, call back, scheduled call, reestablished call) (Class 379/210.01)
- Call blocking (Class 379/210.02)
- Call diversion (e.g., call capture) (Class 379/211.01)
- Call Waiting (Class 379/215.01)
- Abbreviated dialing or direct call (e.g., hot line) (Class 379/216.01)
- Audible paging (Class 379/217.01)
- Automatic directory service (e.g., on-line) (Class 379/218.01)
- Performed by operator (e.g., butt-in, busy verification) (Class 379/218.02)
- With interexchange network routing (Class 379/220.01)
- Routing parameter (e.g., area code, address, service provider identifier) (Class 379/221.14)
- Connection call model (e.g., virtual network, displayed models) (Class 379/221.15)
- Toll center (Class 379/222)
- Tandem switching center (Class 379/224)
- Multi-PBX interconnection (Class 379/225)
- Having a manual exchange (Class 379/226)
- Interexchange signalling (Class 379/229)
- Class of service determination or transmission (Class 379/243)
- Identification (Class 379/245)
- Four-wire switching (Class 379/250)
- With generating of call associated substation signal (Class 379/251)
- Call distribution to operator (Class 379/265.01)
- Switching controlled in response to called station addressing signal (Class 379/258)
- Switching apparatus for connecting calling line to operator's position (Class 379/308)
- Divided central (e.g., communication between switchboards) (Class 379/310)
- Having multiple answering jacks for multiplied line (Class 379/312)
- Multiple section switchboard (Class 379/313)
- With line-signal control (Class 379/315)
- Single switchboard (e.g., cord circuit) (Class 379/319)
- Power supply (Class 379/322)
- Structure of equipment (Class 379/325)
- Having protective circuit (Class 379/331)
- Plug and socket (Class 379/332)
- With signal conversion (e.g., dial to DTMF, analog to PCM) (Class 379/339)
- Having line length compensation or equalization (Class 379/340)
- Pulse or tone repeater (e.g., electromechanical relay) (Class 379/341)
- Controlled by a pilot or reference signal (Class 379/343)
- Component processes bidirectional signals (Class 379/344)
- With frequency discriminator or negative impedance element (Class 379/346)
- With gain or attenuation control (Class 379/347)
- Transmission of power to distant repeater (Class 379/348)
- Having voice frequency transformer (Class 379/349)
- Conversion of signal form (e.g., A/D, frequency or phase) (Class 379/387.02)
- For loudspeaking terminal (Class 379/388.01)
- Sidetone control or hybrid circuit (e.g., induction coil) (Class 379/391)
- Noise suppression (Class 379/392.01)
- Hold circuit (Class 379/393)
- Impedance matching or line equalizing (Class 379/394)
- Amplifying (e.g., AGC or AVC) (Class 379/395)
- Power control or detection circuit (Class 379/395.01)
- Visual signalling (e.g., lamp) (Class 379/396)
- Wire distribution (Class 379/397)
- With circuit connection to terminal (Class 379/442)
- Including coupler (e.g., inductive) (Class 379/443)
- Locking device (Class 379/445)
- Telephone receiver support (Class 379/446)
- Attachable to terminal housing (Class 379/447)
- Protective structure (Class 379/451)
- Hood or enclosure (e.g., booth) (Class 379/453)
- Support or stand (Class 379/454)
- Dialing tool (Class 379/456)
Cross-Reference Art Collections
Foreign Patent Art Collections
- Credit authorization (379/91) (Class 379/FOR113)
- Polling (e.g., audience survey) (379/92) (Class 379/FOR114)
- With transmission of a digital message signal over a telephone line (379/93) (Class 379/FOR115)
- To produce visual-graphic copy reproduction (e.g., facsimile) (379/100) (Class 379/FOR122)
- Audio program distribution (379/101) (Class 379/FOR123)
- Remote control (379/102) (Class 379/FOR124)
- Remote indication over telephone line (e.g., telemetry) (379/106) (Class 379/FOR128)
- Telegraphy (379/108) (Class 379/FOR130)
- Stored in digital form (379/88) (Class 379/FOR134)
- DIAGNOSTIC TESTING, MALFUNCTION, INDICATION, OR ELECTRICAL CONDITION MEASUREMENT (379/1) (Class 379/FOR136)
- Of automatic switching equipment (379/15) (Class 379/FOR140)
- Of subscriber loop or terminal (379/27) (Class 379/FOR142)
- Indication of nonstandard condition of telephone equipment (379/32) (Class 379/FOR144)
- Computer or processor control (379/112) (Class 379/FOR146)
- Other than coin (379/144) (Class 379/FOR153)
- PRIVATE (E.G., HOUSE OR INTERCOM) OR SINGLE LINE SYSTEM (379/167) (Class 379/FOR154)
- SPECIAL SERVICES (379/201) (Class 379/FOR155)
- Subscriber control (379/204) (Class 379/FOR158)
- Abbreviated dialing or direct call (e.g., hot line) (379/216) (Class 379/FOR170)
- With interexchange network routing (379/220) (Class 379/FOR173)
- Alternate routing (379/221) (Class 379/FOR174)
- Incoming call alerting (e.g., ringing) (379/373) (Class 379/FOR180)
- With music or audible message generation (379/374) (Class 379/FOR181)
