Method and system for negotiating transmitting and receiving modes for transmitting facsimile data via a medium having a variable data transmission time
First Claim
1. A method for negotiating transmitting and receiving modes for transmitting facsimile data via a communications link having a plurality of communication media, the communication media including a medium having a variable data transmission time and a medium having a constant data transmission time, wherein the medium having a constant data transmission time serially follows the medium having a variable data transmission time, the method comprising the steps of:
- intercepting a transmission mode acceptance message from an acceptance-transmitting one of the terminating facsimile machine and an originating facsimile machine;
modifying the transmission mode acceptance message to form a modified transmission mode acceptance message for increasing a maximum receive data rate in the terminating facsimile machine relative to a transmit data rate in the originating facsimile machine; and
sending the modified transmission mode acceptance message to an acceptance-receiving one of the terminating facsimile machine and the originating facsimile machine, wherein the modified transmission mode acceptance message is part of a sequence of messages for negotiating transmitting and receiving modes in the originating and terminating facsimile machines, respectively, which sequence permits a maximum data rate in one of the media having a constant data transmission time to exceed a maximum data rate in the medium having a variable data transmission time, thereby mitigating the effects of the variable time of transmission.
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Accused Products
Abstract
A communications link having a plurality of communication media is coupled between an originating facsimile machine and a terminating facsimile machine. The plurality of communication media includes a medium having a variable data transmission time followed serially by a media having a constant data transmission time. In the communication link, a transmission mode acceptance message is intercepted from an acceptance-transmitting one of the terminating and originating facsimile machines. The transmission mode acceptance message is modified to form a modified transmission mode acceptance message for increasing a maximum received data rate in the terminating facsimile machine relative to a transmit data rate in the originating facsimile machine. Thereafter, the modified transmission mode acceptance messages sent to an acceptance-receiving one of the terminating and originating facsimile machines, wherein the modified transmission mode acceptance message is part of a sequence of messages for negotiating transmitting and receiving modes in the originating and terminating facsimile machines, respectively, which sequence permits a maximum data rate in the medium having a constant data transmission time to exceed a maximum data rate in the medium having a variable data transmission time, thereby mitigating the effects of the variable time of transmission.
19 Citations
17 Claims
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1. A method for negotiating transmitting and receiving modes for transmitting facsimile data via a communications link having a plurality of communication media, the communication media including a medium having a variable data transmission time and a medium having a constant data transmission time, wherein the medium having a constant data transmission time serially follows the medium having a variable data transmission time, the method comprising the steps of:
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intercepting a transmission mode acceptance message from an acceptance-transmitting one of the terminating facsimile machine and an originating facsimile machine; modifying the transmission mode acceptance message to form a modified transmission mode acceptance message for increasing a maximum receive data rate in the terminating facsimile machine relative to a transmit data rate in the originating facsimile machine; and sending the modified transmission mode acceptance message to an acceptance-receiving one of the terminating facsimile machine and the originating facsimile machine, wherein the modified transmission mode acceptance message is part of a sequence of messages for negotiating transmitting and receiving modes in the originating and terminating facsimile machines, respectively, which sequence permits a maximum data rate in one of the media having a constant data transmission time to exceed a maximum data rate in the medium having a variable data transmission time, thereby mitigating the effects of the variable time of transmission. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A system for negotiating transmitting and receiving modes for transmitting facsimile data via a communications link having a plurality of communication media, the communication media including a medium having a variable data transmission time and a medium having a constant data transmission time, wherein the medium having a constant data transmission time serially follows the medium having a variable data transmission time, the system comprising:
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means for intercepting a transmission mode acceptance message from an acceptance-transmitting one of the terminating facsimile machine and an originating facsimile machine; means for modifying the transmission mode acceptance message to form a modified transmission mode acceptance message for increasing a maximum receive data rate in the terminating facsimile machine relative to a transmit data rate in the originating facsimile machine; and means for sending the modified transmission mode acceptance message to an acceptance-receiving one of the terminating facsimile machine and the originating facsimile machine, wherein the modified transmission mode acceptance message is part of a sequence of messages for negotiating transmitting and receiving modes in the originating and terminating facsimile machines, respectively, which sequence permits a maximum data rate in one of the media having a constant data transmission time to exceed a maximum data rate in the medium having a variable data transmission time, thereby mitigating the effects of the variable time of transmission. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A fixed wireless terminal comprising:
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a transmission mode acceptance message interceptor for intercepting transmission mode acceptance messages from an acceptance-transmitting one of an originating facsimile machine and a terminating facsimile machine; a transmission mode acceptance message modifier for changing a transmission mode acceptance message having a lower maximum data transmission rate to a modified transmission mode acceptance message having a higher maximum data transmission rate in response to intercepting a transmission mode acceptance message in the transmission mode acceptance message interceptor; and a message sender coupled to the transmission mode acceptance message modifier for sending the modified transmission mode acceptance message to a an acceptance-receiving one of the originating facsimile machine and the terminating facsimile machine.
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Specification