Versatile communication device with a facsimile function and...

Details Versatile communication device with a facsimile function and... Versatile communication device with a facsimile function and...

2005-09-13

2005-09-13

Chan, Wing (Department: 2643)

Telephonic communications

Telephone line or system combined with diverse electrical...

To produce visual-graphic copy

C379S100010, C358S468000

Reexamination Certificate

active

06944275

ABSTRACT:
In a versatile communication device having a telephone function and a facsimile function, an erroneous detection of an on-hold melody as a control signal, such as a calling tone (CNG) signal, is prevented when the on-hold melody is played during an on-hold period of the telephone, thereby preventing the device from mistakenly switching connection to the facsimile function during the on-hold period. Further, the on-hold melody containing a signal component of the CNG signal or other control signal is prevented from sending to the remote device, so the remote device provided with a facsimile function does not switch to a facsimile mode during the on-hold status of the voice communication.

REFERENCES:
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patent: 5877872 (1999-03-01), Nomura et al.
patent: 5909288 (1999-06-01), Kawamura
patent: 6654148 (2003-11-01), Nishii
patent: 0 541 087 (1993-05-01), None
patent: 0 749 230 (1996-12-01), None
patent: 07307808 (1995-11-01), None

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