| 摘要 |
<p>An improvement to a half duplex multipoint communication environment enables the full duplex communication of information between a control modem (13) and any one of a plurality of remote modems (18) at any given time. This is accomplished by providing a system for echo cancellation in a multipoint communication environment whereby a first modem having a first echo canceler for canceling the echo on a transmission line and a plurality of additional modems each having an echo canceler are connected to the same copper wire pair. The presence of an echo canceler in each modem connected to the transmission path enables the full duplex exchange of information between the control modem and one of the remote modems at any given time.</p> |
