Multiplex communications – Pathfinding or routing – Combined circuit switching and packet switching
Reexamination Certificate
2008-03-25
2008-03-25
Pham, Chi (Department: 2616)
Multiplex communications
Pathfinding or routing
Combined circuit switching and packet switching
C370S401000, C375S222000
Reexamination Certificate
active
10253352
ABSTRACT:
Answer tone received at answering-side gateway and first classification signal is transmitted to a calling-side gateway that generates an answer tone in response to the signal. A second classification signal may be transmitted to the calling-side gateway that adjusts the answer tone in response to the second signal.
REFERENCES:
patent: 5787116 (1998-07-01), Lam et al.
patent: 6819750 (2004-11-01), Mehta et al.
patent: 2001/0046259 (2001-11-01), Abrishami
patent: 2002/0131415 (2002-09-01), Guven et al.
Farjami & Farjami LLP
Mindspeed Technologies Inc.
Pham Chi
Tsegaye Saba
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