Pulse or digital communications – Transceivers – Modems
Reexamination Certificate
2006-07-11
2006-07-11
Ha, Dac (Department: 2611)
Pulse or digital communications
Transceivers
Modems
C370S401000, C370S351000, C370S352000
Reexamination Certificate
active
07075979
ABSTRACT:
Various methods and systems for establishing modem relay connections are provided. For example, a modem relay method for use by a first gateway device in communication with a calling modem comprises the exemplary steps of: receiving a call from the calling modem for establishing a communication with a remote modem; requesting a second gateway device to place a call to the remote modem for establishing the communication; transmitting ANSam to the calling modem for a predetermined period of time according to an ANSam message received from the second gateway device in an RFC2833 message via a packet network; monitoring for detection of a CM signal from the calling modem; monitoring for detection of an AA signal from the calling modem; monitoring for receipt of a modulation type message from the second gateway device; and monitoring for receipt of a pass through mode message from the second gateway device.
REFERENCES:
patent: 4996685 (1991-02-01), Farese et al.
patent: 6577715 (2003-06-01), Atsuta
patent: 6611804 (2003-08-01), Dorbecker et al.
patent: 6724416 (2004-04-01), Liu
patent: 6765931 (2004-07-01), Rabenko et al.
patent: 2001/0046259 (2001-11-01), Abrishami
patent: 2002/0064137 (2002-05-01), Garakani et al.
patent: 2002/0085501 (2002-07-01), Guven et al.
patent: 2002/0176401 (2002-11-01), Ryan et al.
patent: 2002/0186709 (2002-12-01), Takagi et al.
patent: 2003/0095544 (2003-05-01), Chu
patent: 2003/0123097 (2003-07-01), Fruth
Schulzrinne et al RFC 2833—RTP Payload for DTMF Digits, Telephony Tones and Telephony Signals, May 2000.
FR 2 771 577 A (France Telecom) May 28, 1999 abstract p. 1, line 1- p. 3, line 7 p. 4, lne 28- last line p. 5, line 15- line 24 p. 8, line 10- p. 9, line 11 p. 10, line 24- line 32 p. 11, line 32- p. 12, line 32 p. 14, line 27- p. 15, line 5 p. 17, line 3- p. 18, line 14 claims 1,2 figure 1.
WO 97 49228 A (Paradyne Corp.) Dec. 24, 1997 abstract p. 5, line 1- last line p. 6, line 1- last line p. 11, line 19- p. 12, line 2 claims 1, 2, 6.
FR 2 771 577 A (France Telecom) May 28, 1999.
WO 97 49228 A (Paradyne Corp.) Dec. 24, 1997.
Beadle Michael S.
Chen Frank
Chu Keith
Kandiah Skantha
Wren Paul
Ha Dac
Joseph Jaison
Mindspeed Technologies Inc.
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