Multiplex communications – Wide area network – Packet switching
Patent
1995-11-16
1998-11-17
Trammell, James P.
Multiplex communications
Wide area network
Packet switching
370419, 370421, 370423, 370428, 370429, H04H 100
Patent
active
058389130
ABSTRACT:
A communications interface is used in a telecommunications network station which including a number of network elements, a controller for controlling the network elements and an internal bus interconnecting the controller and the network elements. The controller operates as a busmaster on the bus and each of the network elements operates as a slave on the bus. The communications interface has a pool of buffers for temporary message storage and a polling function for temporarily storing a message received from the bus in a buffer and/or for taking a message from a buffer for transmission over the bus. A binary sequence number is inverted for a reply if a received message is valid, otherwise it is not changed for the reply. A message is re-sent when the sequence number in a reply has not changed.
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Cooper Guy A.
Lysejko Martin
DSC Communications Corporation
Trammell James P.
Vo Hien
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