Methods and apparatus for handling maintenance messages in extended superframe T1 telephone circuits
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Mar 25, 2003
Grant Date -
N/A
app pub date -
Sep 28, 1998
filing date -
Sep 28, 1998
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An apparatus for handling back-to-back maintenance messages in extended superframe t1 telephone circuits includes a FIFO, a byte counter, and a message length register. According toga method of the invention, when messages are placed in the. FIFO, the byte counter counts the message length and places the message length in the message length register. A host controller is required to read the message length register in the time interval following complete receipt of a first message before complete receipt of a second message, but is only required to read the contents of the FIFO before it overflows. According to a presently preferred embodiment of the apparatus, a second register is provided for indicating the current depth of the FIFO. The second register sends an interrupt to the host controller when the contents of the FIFO exceed a threshold.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully