Patent ID: 6243378
Filing Date: 2001-06-05
Classification: H04L,H04Q

Abstract:
A multi-stage switching network, the network comprising a plurality of self-routing switches cascaded into first, middle and last stages, each said switch including a plurality of switch inputs and a plurality of switch outputs, each of the switch outputs of each said switch coupled to a different switch input of others of said switches; wherein each of said output ports of said last stages includes a threshold means for determining whether a selective camp-on request remains pending while waiting for said output port to become not busy or is rejected; and said last stages including a plurality of output ports each having a threshold and logic responsive to said camp-on command for selectively camping-on a busy output port, accepting the camp-on command, waiting for said output port to become not busy, and then connecting said data message to said output port, or rejecting said camp-on command, when said output port is busy and previously camped-on, or busy and will not be available within said threshold.