H04M19/026 - CPC Classification Index

ClassID:

228051 ⎘

H04M19/026 - CPC Classification

Classification description:

Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone Arrangements for interrupting the ringing current

Recent Application in this class:

20240187533

2024-06-06

Ringing suppression circuit

20160227025

2016-08-04

SYSTEM AND METHOD OF MULTIPLE VOICE CALL HANDLING

20150222760

2015-08-06

METHOD AND APPARATUS FOR PROVIDING RINGING TIMEOUT DISCONNECT SUPERVISION IN REMOTE TELEPHONE EXTENSIONS USING VOICE OVER PACKET-DATA-NETWORK SYSTEMS (VOPS)

20130058325

2013-03-07

Method and apparatus for providing ringing timeout disconnect supervision in remote telephone extensions using voice over packet-data-network systems (VOPS)

20080175233

2008-07-24

Method and apparatus for providing ringing timeout disconnect supervision in remote telephone extensions using voice over packet-data-network systems (VOPS)