ClassID:

227400

H04M1/253 - CPC Classification

Classification description:

Substation equipment, e.g. for use by subscribers Telephone sets using digital voice transmission

Sub-classes:
Recent Application in this class:
#1
20230396701
2023-12-07

Smart receive audio switching for a converged device

#2
20220353464
2022-11-03

Terminal and operating method thereof

#3
20210337071
2021-10-28

Method for establishing call connection, first terminal, server, and storage medium

#4
20210243407
2021-08-05

Terminal and operating method thereof

#5
20200359263
2020-11-12

Data processing apparatus, data processing method, and program

#6
20190356773
2019-11-21

Maintaining an automobile configuration of a mobile computing device while switching between automobile and non-automobile user interfaces

#7
20180288650
2018-10-04

Data processing apparatus, data processing method, and program

#8
20160088452
2016-03-24

Systems and methods of call-based data communication

#9
20150341281
2015-11-26

Circular time differencing add/subtract delta to TMAX on sign, MSB

#10
20150117442
2015-04-30

Systems and methods for reducing signalling in an internet protocol telephony system

#11
20130294441
2013-11-07

Producing silence packets in local buffer without sequencing, queuing, decoding

#12
20130252595
2013-09-26

Systems and methods of call-based data communication

#13
20130163747
2013-06-27

MULTI-MICROPHONE SYSTEM TO SUPPORT BANDPASS FILTERING FOR ANALOG-TO-DIGITAL CONVERSIONS AT DIFFERENT DATA RATES

#14
20130102360
2013-04-25

Voice/Data/RF integrated circuit

#15
20120184331
2012-07-19

Voice/data/RF integrated circuit

#16
20120079094
2012-03-29

System and method for data transfer of object properties

#17
20120063587
2012-03-15

Multi-microphone system to support bandpass filtering for analog-to-digital conversions at different data rates

#18
20110299444
2011-12-08

Voice data RF GPS integrated circuit

#19
20110280236
2011-11-17

RFIC with cellular and RFID functionality

#20
20110261719
2011-10-27

Processing unit decoding packets with deadlines in communications channel

#21
20110199974
2011-08-18

Method and communication terminal for implementing a voice service through a wireless network

#22
20110143686
2011-06-16

Configurable multiple mode RFIC

#23
20110125935
2011-05-26

Direct memory download in a voice data and RF integrated circuit and method for use therewith

#24
20110058496
2011-03-10

Voice-activity detection based on far-end and near-end statistics

#25
20110021246
2011-01-27

RFIC with cellular and RFID functionality

#26
20100240297
2010-09-23

Communication system

#27
20100120376
2010-05-13

Voice data RF GPS integrated circuit

#28
20100118819
2010-05-13

Decoding packets with deadlines in communications channels processing unit

#29
20100110980
2010-05-06

Technique for controlling establishment of a tandem-free transcoder operation

#30
20090209300
2009-08-20

Apparatus, and associated method, for selecting speech COder operational rates

#31
20090070104
2009-03-12

ACOUSTIC COMMUNICATION SYSTEM

#32
20080151874
2008-06-26

Network telephone system and methods therefor

#33
20080146266
2008-06-19

Direct memory download in a voice data and RF integrated circuit and method for use therewith

#34
20080146260
2008-06-19

Voice data RF disk drive IC

#35
20080146167
2008-06-19

RFIC with cellular and RFID functionality

#36
20080146164
2008-06-19

Configurable multiple mode RFIC

#37
20080146144
2008-06-19

Voice data RF GPS integrated circuit

#38
20080049647
2008-02-28

Voice-activity detection based on far-end and near-end statistics

#39
20070195943
2007-08-23

Remote PBX system and advanced communication terminals

#40
20070184808
2007-08-09

Method and device for transmitting speech signals via a data telecommunications network

#41
20070127633
2007-06-07

Method of operating a telecommunications link between two telecommunications devices which transmits display control commands in a separate data channel

#42
20070116251
2007-05-24

Method system and terminal for providing customized information during call setup process in telecommunication system

#43
20070058790
2007-03-15

Network telephone system and methods therefor

#44
20060153176
2006-07-13

Computer-based multifunctional personal communication system with caller ID

#45
20060035626
2006-02-16

Contents reproducing apparatus with telephone function

#46
20060007871
2006-01-12

Systems, processes and integrated circuits for improved packet scheduling of media over packet

#47
20050219068
2005-10-06

System and method for shaping a data signal for embedding within an audio signal

#48
20050195805
2005-09-08

Traffic distribuiton method and traffic distribution system of IP key telephone

#49
20050152514
2005-07-14

Method of sharing and transferring information between ISDN telephones

#50
20050111638
2005-05-26

Communication device that provides enhanced services

#51
16122474
2019-08-20

Maintaining an automobile configuration of a mobile computing device while switching between automobile and non-automobile user interfaces

#52
15925336
2018-10-09

Maintaining an automobile configuration of a mobile computing device while switching between automobile and non-automobile user interfaces