US3754100A — Age time connection network arrangement adapted t…

Claim 1

Independent Claim 302 words

A time division multiplex connection system comprising a multistage network including at least one input stage, one intermediate stage, and one output stage, each stage consisting of a certain number of time switches, each switch of the input stage comprising a certain number of inputs connected to incoming multiplex lines, as many outputs as there are switches at the next-following intermediate stage, each output being connected with a different switch of said intermediate stage, each switch of an intermediate stage comprising as many inputs as there are switches at the stage which precedes it, each input being connected with a different switch of the preceding stage and as many outputs as there are switches at the next-following stage, each output being connected with a different switch of the nextfollowing stage, each switch of the output stage comprising a certain number of outputs connected to outgoing multiplex lines, and as many inputs as there are switches at the stage which precedes it, and each input being connected with a different switch of the preceding stage, the switches of two stages which follow each other being interconnected by means of intermediate multiplex lines, wherein each time switch is composed of input means receiving a plurality of time channels on said incoming multiplex lines, output means for applying said plurality of time channels on the multiplex lines of said outputs, and memory means for transferring said time channels from said input means to said output means, wherein said memory means includes control means for transferring a given time channel on one input line to a different time channel on an output line of the associated switch, and wherein the time channels at the input and at the output of a time switch established for one communication are maintained for the entire duration of said communication.

Claim 2

Dependent Claim 302 words

A time division multiplex connection system comprising a multistage network including at least one input stage, one intermediate stage, and one output stage, each stage consisting of a certain number of time switches, each switch of the input stage comprising a certain number of inputs connected to incoming multiplex lines, as many outputs as there are switches at the next-following intermediate stage, each output being connected with a different switch of said intermediate stage, each switch of an intermediate stage comprising as many inputs as there are switches at the stage which precedes it, each input being connected with a different switch of the preceding stage and as many outputs as there are switches at the next-following stage, each output being connected with a different switch of the nextfollowing stage, each switch of the output stage comprising a certain number of outputs connected to outgoing multiplex lines, and as many inputs as there are switches at the stage which precedes it, and each input being connected with a different switch of the preceding stage, the switches of two stages which follow each other being interconnected by means of intermediate multiplex lines, wherein each time switch is composed of input means receiving a plurality of time channels on said incoming multiplex lines, output means for applying said plurality of time channels on the multiplex lines of said outputs, and memory means for transferring said time channels from said input means to said output means, wherein said memory means includes control means for transferring a given time channel on one input line to a different time channel on an output line of the associated switch, and wherein the time channels at the input and at the output of a time switch established for one communication are maintained for the entire duration of said communication.

Claim 3

Dependent Claim 193 words

A time division multiplex connection system as defined in claim 1, wherein said network comprises only three stages, an input stage comprising p input switches with n inputs and m outputs, an intermediate stage comprising m intermediate switches with p inputs and q outputs, an output stage comprising q output switches with m inputs and n outputs, each input switch receiving n incoming network lines with x time channels and its m outputs being connected to respective inputs of the m intermediate switches, each output switch having n outgoing network lines with x time channels, the m inputs of each output switch being connected to the outputs of the m intermediate switches, the p inputs and q outputs of each intermediate switch being thus respectively connected to the p input switches and the q output switches so that the network thus determined comprises n2 incoming lines and n2 outgoing lines, whereby a connection is possible between any time channel of the n2 incoming network lines and any time channel of the n2 outgoing network lines, the suppresion of blocking in the traffic depending on the number m of switches of the intermediate stage.

Claim 4

Dependent Claim 127 words

A time division multiplex connection system according to claim 1, with three stages, the input stage comprising n switches with n inputs and (2n - 1) outputs, the intermediate stage comprising (2n- 1) switches with n inputs and n outputs and the output stage comprising n switches with (2n-1) inputs and n outputs, some of said time division multiplex connections existing between the (2n - 1) outputs of each input switch and the inputs of the (2n - 1) intermediate switches and other of said time division multiplex connections existing between the (2n - 1) inputs of each output switch and the (2n - 1) intermediate switches so as to form a time connection network without blocking having n2 incoming network lines and n2 outgoing network lines.

Claim 5

Dependent Claim 52 words

A time division multiplex connection system according to claim 1, wherein each of the stages comprises the same number n of square switches with n inputs and n outputs so that the system constitutes a connection network without blocking having the connections rearranged without interrupting them each time that a blocking occurs.

Claim 6

Dependent Claim 220 words

A time division multiplex connection system according to claim 1, wherein each time switch comprises a plurality of input registers equal in number to the number of incoming network lines to the switch, a plurality of output registers equal in number to the outgoing network lines from the switch, each incoming and outgoing network line comprising 32 time channels, a buffer memory operatively associated with the incoming network lines and constituted by as many addressable memory blocks as there are incoming network lines to store data therefrom, each block comprising 32 words of y bits corresponding to 32 time channels, a control memory operatively associated with the outgoing network lines and constituted by as many memory blocks as there are outgoing network lines, each block comprising 32 words of Z bits corresponding to the 32 time channels so that the establishment of a connection between a time channel ti of an input register and a time channel tj of an output register is effected by means in said control memory writing in the word of z control memory bits associated with the time channel tj of the output register allocated to the nth outgoing network line the address of the buffer memory word associated with the time channel ti of the input register allocated to the mth incoming network line.

Claim 7

Dependent Claim 189 words

A time division multiplex connection system as defined in claim 1, Wherein each time switch comprises a plurality of input registers equal in number to the number of incoming network lines to the switch, a plurality of output registers equal in number to the outgoing network lines from the switch, a buffer memory including an individual memory portion for each input register having a plurality of time channels equal in number to the time channels provided by each incoming network line, a control memory having an addressable memory block corresponding to each output register, each memory block having a plurality of time channels equal in number to the time channels provided by each outgoing network line, said control memory including means for transferring data in one time channel in said buffer memory to a different time channel of one of said outgoing network lines in accordance with the address of the input register and time channel thereof stored in the memory block corresponding to the required output register and the time channel of the memory block corresponding to the time channel of the outgoing network line to be used.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1976-08-20	1977-02-19	1977-08-21	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1980-08-20	1981-02-19	1981-08-21	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1984-08-20	1985-02-19	1985-08-21	$7700.00	Window Closed / Lapsed

Age time connection network arrangement adapted to be used more particularly in telephone switching

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