Telephonic communications – Telephone line or system combined with diverse electrical... – Having transmission of a digital message signal over a...
Reexamination Certificate
2007-01-30
2007-01-30
Tsang, Fan (Department: 2614)
Telephonic communications
Telephone line or system combined with diverse electrical...
Having transmission of a digital message signal over a...
C379S093050, C370S354000, C455S420000
Reexamination Certificate
active
10621468
ABSTRACT:
A dual phone, and method of telecommunicating by using the same, have an ISDN phone and IP phone. The dual phone recognizes one of ISDN mode, IP mode, and external connection mode from a user input, and connects or releases a voice path between an ISDN phone and the IP phone based on the recognized mode, thereby enabling calling between an external ISDN phone and an IP phone.
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Fleshner & Kim LLP
LG Electronics Inc.
Singh Ramnandan
Tsang Fan
LandOfFree
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