Direct inward dialling [PBX]

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CPC
H04Q2213/286

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Parent Industries

HELECTRICITY H04Electric communication H04QSELECTING H04Q2213/00Indexing scheme relating to selecting arrangements in general and for multiplex systems

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H04Q2213/286Direct inward dialling [PBX]

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Patents Grantslast 30 patents

Information Patent Grant
Communication terminal device
- Patent number 5,805,684
- Issue date Sep 8, 1998
- Yamaha Corporation
- Ryota Hirose
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Data terminal control unit including table for efficiently making c...
- Patent number 5,457,693
- Issue date Oct 10, 1995
- Sharp Kabushiki Kaisha
- Satoyuki Sasaki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Radio communication apparatus for ISDN
- Patent number 5,357,558
- Issue date Oct 18, 1994
- Sony Corporation
- Munehiro Yoshikawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents