Fujitsu Corporation

Yoshio Morita

Takashi Nara

Takashi Hatano

Yoshiharu Kato

Shiro Uriu

Noriko Samejima

Ryouzi Takano

Masaki Kira

Takaaki Kato

Yutaka Kawato

Takayasu Mochida

Hiroaki Takeichi

A peripheral device cable, connected to a peripheral device, integrally incorporates a subscriber link that is a physical line for transmitting subscriber information in synchronization with a highway clock and a control link that is a physical line for transmitting control data in synchronization with the highway clock. A control data converter controls interfacing between the control data transferred over the control link synchronously with the highway clock and control data that a control unit transmits/receives asynchronously with the highway clock. The subscriber link is connected to a switch.

In-station control system and method

A shaper circuit is provided in a line adapter, not in an ATM switch. A billing section is provided on the output side of the shaper circuit. The shaper circuit is configured to output M cells for N cell slots at a temporally smooth rate, where M and N are integers. This configuration serves to optimize buffer capacity for shaping, prevents charging for discarded cells, and allows a full rate setting matched to a line speed.

Line adapter for cell switching machine

A data transfer system including an exchange, wherein the exchange transfers data by sharing a plurality of channels by a time division multiplex mode. In this case, the exchange transfers the data by variably allocating respective time slots to be occupied by the respective channels. That is, it is possible to allot any line speed to any channel and therefore possible to mix signals with different data transfer speeds in the frames. This results in an exchange network with a high degree of freedom of transfer for the subscriber terminal equipment.

Data transfer system including exchange

In this invention, a call control information of a subscriber's line is compiled into a packet form, is transferred via a network of a digital switch board to a signal control device, and digital data is also transferred via the network to a handler. Accordingly, a signal from a digital subscriber is efficiently processed, and an analog subscriber is also accommodated so that a call control in the same way as for the digital subscriber is made possible for the analog subscriber.

Subscriber's line switching control system

Growing community of inventors

Yokohama, Japan

Yoshio Morita