Apparatus and method for multiplexing communication signals

H - Electricity – 04 – Q

Patent

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Details

H04Q 3/545 (2006.01) H04B 1/74 (2006.01) H04M 3/24 (2006.01) H04M 3/42 (2006.01) H04M 3/56 (2006.01)

Patent

CA 2495868

In a PBX environment, a middleware module abstracts communication cards so that the plurality of channels associated therewith are grouped for efficiency. The middleware module recognizes unoperational channels, and restarts the hardware associated with the channels as well as allowing conferencing and transferring calls when the PBX switch does not support same. Preferably, for outgoing calls, the middleware adapter controls the state of interfaces for all hardware adapters and tries to deliver calls over active interfaces. In case of failure, the middleware adapter investigates and makes a decision if the call should be delivered over another adapter. In this way, redundant and highly available solutions are implemented transparent to application and interface drivers. For incoming calls, the middleware adapter accepts calls from all hardware adapters and presents these calls to applications as if these calls are issued by one adapter.

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