Communication multistage switching techniques
AssigneeTellabs Operations, Inc.
InventorsThomas E. Ryan, Terrence J. Tanis
Life of this patent
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Abstract
Multistage switching for mixed SONET VT traffic, such as VT1.5s and VT2s, is accomplished by employing an input time switch, a space switch and an output time switch. The input time switch and output time switch include VT1.5 time switches arranged to alter the time order of the input VT1.5s and VT2 time switches arranged to alter the time order to the input VT2s. The space switch includes a VT1.5 space switch arranged to order the input VT1.5s with respect to output channels in an output channel order different from the input channel order of the VT1.5s. The space switch also includes a VT2 space switch arranged to order the input VT2s with respect to output channels in an output channel order different from the input channel order of the VT2s.
Claims25
A communication switch comprising a plurality of input channels and a plurality of output channels for switching data comprising a plurality of first groups of data transmitted in a first time order and comprising a plurality of second groups of data transmitted in a second time order, said first groups of data of a different type from said second groups of data, said switch comprising in combination:
- a first switch arranged to alter said first time order of said first groups of data into a third time order;
- a second switch arranged to alter said second time order of said second groups of data into a fourth time order;
- and
- a third switch arranged to order said first groups of data with respect to said output channels in an output channel order.
A method of switching data received on a plurality of input channels to a plurality of output channels of a switch, said data comprising a plurality of first groups of data transmitted in a first time order and comprising a plurality of second groups of data transmitted in a second time order, said first groups of data of a different type from said second groups of data, said method comprising in combination:
- altering said first time order of said first groups of data into a third time order;
- altering said second time order of said second groups of data into a fourth time order;
- and
- ordering said first groups of data with respect to said output channels in an output channel order.
Dependencies are inferred from the claim text.