Multiplex communications – Pathfinding or routing – Switching a message which includes an address header
Reexamination Certificate
2006-01-31
2006-01-31
Hsu, Alpus H. (Department: 2665)
Multiplex communications
Pathfinding or routing
Switching a message which includes an address header
C370S395640, C370S469000
Reexamination Certificate
active
06993030
ABSTRACT:
There is disclosed a method for establishing a plurality of ATM adaption layer type 2 channels between interworking functions across a single ATM virtual channel connection. Within each interworking function there are a system management layer entity an ANP layer management identity and a protocol stack. The ANP layer management entities are further sub-divided into a series of functional blocks comprising: Originating procedures, Terminating procedures and Status Record entity. The Status Record entity records whether each AAL2 channel amongst the plurality of AAL2 channels is assigned/unassigned or activated/de-activated. A new AAL2 channel is established between interworking functions when a System Management entity sends in Assign—Request primitive to ANP layer management entity requesting an available AAL2 channel. The status record entity within ANP layer management entity is interrogated and an available AAL2 channel is identified. A robust set of messages are exchanged between the ANP layer management entities indicating that an AAL2 channel is available and confirming or denying the connection.
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Brueckheimer Simon Daniel
Caves Keith
Barnes & Thornburg
Hsu Alpus H.
Nortel Networks Limited
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