Multiplex communications – Pathfinding or routing – Switching a message which includes an address header
Reexamination Certificate
2006-09-14
2010-11-30
Wu, Daniel (Department: 2612)
Multiplex communications
Pathfinding or routing
Switching a message which includes an address header
C370S238100
Reexamination Certificate
active
07843932
ABSTRACT:
Narrowband signaling from a transfer node for a call originating at an end office is received at a centralized control and signaling interworking function device in an asynchronous transfer mode switching network. The received narrowband signaling is converted to broadband signaling. The broadband signaling is provided to a plurality of trunk interworking function devices via the asynchronous transfer mode switching network, to establish a connection across the asynchronous transfer mode switching network, when the centralized control and signaling interworking function device and the plurality of trunk interworking function devices are determined to be members of a closed user group.
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Bi Haifeng
Sigarto Tina M
Stafford Matthew Wayne
AT&T Labs, Inc.
Greenblum & Bernstein P.L.C.
Ott Frederick
Wu Daniel
LandOfFree
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