Patent ID: 6160639
Filing Date: 2000-12-12
Classification: H04N

Abstract:
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; andsending 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.