H04M3/26

СПИСОК патентов США - подгруппа МПК¹⁶ H04M3/26

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№ п/п	Номер патента	Название патента
2017
1	9553984	Systems and methods for remotely tuning hearing devices
2016
2	9491283	Apparatus, systems and methods of common mode based diagnostics
3	9485353	Method and device for detecting a bridged tap within a telecommunication line
4	9439012	Method and apparatus for audio testing
5	9380152	Systems and methods for providing back power to a service unit
2011
6	7978613	Test signalling
2009
7	7623855	Sustainable wireless service testing
2007
8	7242178	Digital cable toning apparatus and method
2005
9	6959069	Method for testing subscriber line of private automatic branch exchange using dual-tone multi-frequency signal
10	6944132	Transmission apparatus, order wire transmission system and order wire monitoring method
11	6940849	System and method for IP telephony ping
2004
12	6816575	Single ended loop loss measurement by frequency domain reflectometry-based signal processing
13	6798183	Method of and apparatus for simultaneously providing tone and intermittent link onto a cable to assist identifying the cable
14	6744888	Line interface circuit with event detection signaling
15	6744854	Detection of bridge taps by frequency domain reflectometry-based signal processing with precursor signal conditioning
16	6721279	Method and apparatus for adaptive PCM level estimation and constellation training
2003
17	6671760	Switching system for controlling internal apparatuses in an exchange system
18	6650732	Telephony testing system
19	6633631	Digital key telephone system and extension terminal device thereof
20	6594343	Splitter bypass architecture for testing multiple ports
21	6553098	Apparatus and method for assessing leakage from cable networks
2002
22	6496576	Digital key telephone system and extension terminal device thereof
23	6466649	Detection of bridged taps by frequency domain reflectometry
24	6456705	Digital key telephone system and extension terminal device thereof
25	6453015	Telephony testing system
26	6408060	Digital key telephone system and extension terminal device thereof
27	6405149	System and method for testing a telecommunication system
28	6396914	Method and system for transmitting activation codes to a communication device
29	6377671	Digital key telephone system and extension terminal device thereof
30	6373924	Digital key telephone system and extension terminal device thereof
2001
31	6295339	Audio verification of digital subscriber line connection
32	6279124	Method and system for testing hardware and/or software applications
33	6263061	Digital button telephone system and extension terminal for the same
34	6194909	Constructive module of an electronic telecommunications equipment, with an interface towards a testing and diagnosing system
2000
35	6049591	Grievance call processing system
36	6014369	Method and apparatus for testing subscribers accommodated to service node in loop system
1999
37	5940473	Testing apparatus for testing signaling of a switching system
1997
38	5615225	Remote measurement unit containing integrated line measurement and conditioning functionality for performing remotely commanded testing and conditioning of telephone line circuits
1996
39	5548222	Method and apparatus for measuring attenuation and crosstalk in data and communication channels
1994
40	5375166	Communication apparatus with cross-talk protection
1993
41	5193108	Portable telecommunications test instrument with inductive probe circuit
1989
42	4870675	Remote testing of metallic loops with a trans hybrid signal
43	4845736	Cross-connect switch and method for providing test access thereto
1988
44	4746855	Relay multiplexing for circuit testers
45	4724379	Relay multiplexing for circuit testers
1986
46	4612421	Method of and test arrangement for testing the transmission path within an apparatus of a modular construction for interruptions
1982
47	4340788	Method of and system for measuring electrical characteristics of circuit elements included in time-sharing telecommunication network
1981
48	4302843	Method and apparatus for measuring transmission characteristics of a test object during communication gaps
1978
49	4101743	Test circuit for a protective coupler
© 2017, ПАТ-Инфо, В.И. Карнышев Дата формирования списка: 03.04.2017