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| You are viewing a USPC Schedule. |
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| Class 379 | TELEPHONIC COMMUNICATIONS |
| Click here for a printable version of this file | |
![[List of Pre Grant Publications for class 379 subclass 1.01]](../as.gif) | ![[List of Patents for class 379 subclass 1.01]](../ps.gif) | 1.01 | DIAGNOSTIC TESTING, MALFUNCTION INDICATION, OR ELECTRICAL CONDITION MEASUREMENT |
| | 1.02 |  Of audio message storage and retrieval |
| | 1.03 | Of data transmission |
| | 2 | Including fault responsive disconnection of tested component |
| | 3 | Of hybrid or echo suppressor or canceller |
| | 4 | Of repeater |
| | 7 | For detection of eavesdropping device |
| | 8 | With blocking of normal usage |
| | 9 | Of centralized switching system |
| | 9.01 |  Software compatibility |
| | 9.02 | Maintenance console |
| | 9.03 | Trouble ticket reporting |
| | 9.04 | Record or report generation |
| | 9.05 | Backup system |
| | 9.06 | Of line interface circuitry |
| | 14 | Of plural exchange network |
| | 10.01 | By automatic testing sequence |
| | 12 | With dedicated testing line or trunk |
| | 13 | Of call timing or charging equiment |
| | 15.01 | Of switching equipment or network element |
| | 15.02 |  Advanced intelligent network (AIN) |
| | 16 | Of switching path |
| | 17 | Of switching selector |
| | 18 | By use of call address signal |
| | 19 | Rapid manual connecting structure for test equipment |
| | 20 | Of switchboard element condition (e.g., lamp) |
| | 21 | Using portable test set (e.g., handset type) |
| | 22 | Of trunk or long line |
| | 22.01 | By loopback |
| | 22.02 | By analysis of injected tone signal |
| | 22.03 | Fault detection or fault location on telephone link (e.g., continuity, leakage) |
| | 22.04 | Of digital loop carrier |
| | 22.06 | Having special connector |
| | 22.07 | Telephone multiconducting wires (e.g., tip, ring and ground wires) |
| | 22.08 | Noise |
| | 23 | Of line signalling |
| | 24 | Electrical parameter measurement (e.g., attenuation) |
| | 25 | Conductor identification or location |
| | 26.01 | Testing of network terminating interface, subscriber trunk interface, or service function |
| | 27.01 | Testing of subscriber loop or terminal |
| | 27.02 | By generating call signal |
| | 27.03 | By analysis of testing signal |
| | 27.04 | By automatic testing sequence (e.g., programmable, test, script or test call generation program) |
| | 27.05 | Having protection circuit (e.g., surge or short circuit protector) |
| | 27.06 | Having electromechanical switch or relay |
| | 27.07 | Having plugging maintenance or test module |
| | 27.08 | Including sampling measurement technique |
| | 28 | Of data transmission instrument |
| | 29.01 | Terminal arrangement to enable remote testing (e.g., testing interface) |
| | 29.02 | By simulator (e.g., computer simulates testing personnel) |
| | 29.03 | Voltage or current determination |
| | 29.04 | Voltage or current detector |
| | 29.05 | Metallic loop testing |
| | 29.06 | By dialing back the calling terminal |
| | 29.07 | For a fault caused by an off-hook status |
| | 29.08 | For a fault caused by new added service or equipment (e.g., software compatible) |
| | 29.09 | With historical operating information database |
| | 29.1 | Visual output (e.g., printing, displaying) |
| | 29.11 | Having telephone maintenance termination unit (e.g., MTU) |
| | 30 | Loop impedance (e.g., resistance, capacitance) |
| | 31 | Of line signalling generator (e.g., dial, tone code generator) |
| | 32.01 | Monitoring |
| | 36 | FREE CALLING FROM PAYSTATION |
| | 37 | EMERGENCY OR ALARM COMMUNICATIONS (E.G., WATCHMAN'S CIRCUIT) |
| | 38 | Personal monitoring (e.g., for the ill or infirm) |
| | 39 | Responsive to sensed nonsystem condition |
| | 40 | Automatic dialing |
| | 41 | Transmission of recorded audio message |
| | 42 | Plural conditions |
| | 43 | Fire |
| | 44 | Intrusion |
| | 45 | Central office responsive to emergency call or alarm (e.g., "911", operator position display) |
| | 46 | Called line or station condition responsive (e.g., recall if busy) |
| | 47 | Plural alarms over single line |
| | 48 | Announcement or alarm received at terminal station (e.g., "butt-in", alarm) |
| | 49 | Central station with plural substations |
| | 50 | By pulse or digital signal |
| | 51 | With automatic dialing or transmission of recorded audio message |
| | 52 | INCLUDING AID FOR HANDICAPPED USER (E.G., VISUAL, TACTILE, HEARING AID COUPLING) |
| | 55.1 | HAVING NEAR FIELD LINK (E.G., CAPACITIVE, INDUCTIVE) |
| | 56.1 | HAVING LIGHT WAVE OR ULTRASONIC LINK FOR SPEECH OR PAGING SIGNAL |
| | 56.2 | Including fiber optic link within telephone network |
| | 56.3 | Including infra-red link with landline telephone network |
| | 67.1 | AUDIO MESSAGE STORAGE, RETRIEVAL, OR SYNTHESIS |
| | 68 | Dynamic audio signal recording or reproduction |
| | 69 | Call originating |
| | 70 | Call intercept or answering |
| | 71 | Consecutive use of recorded phrases or words to form message |
| | 72 | Sequential or repeated announcement during single call initiated cycle |
| | 73 | Plural record carrier channels |
| | 74 | Remote control over telephone line |
| | 78 | Acoustic coupling |
| | 79 | With specified call initiated cycle control circuitry |
| | 80 |  Voice signal presence responsive |
| | 81 | Call termination responsive (e.g., hang-up) |
| | 82 | Having specified call initiation (e.g., ringing) responsive circuitry |
| | 83 | Structural detail of storage medium drive |
| | 84 | At switching facility (e.g., central office, switchboard) |
| | 85 | Recording of telephone signal during normal operation |
| | 87 | Reproduced signal distributed over telephone line |
| | 88.01 | Voice activation or recognition |
