Control message transmission in telecommunications systems
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United States of America Patent
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-
Nov 17, 1998
Grant Date -
N/A
app pub date -
Nov 16, 1995
filing date -
Jun 2, 1995
priority date (Note) -
Expired
status (Latency Note)
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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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