Abstract: A pressure container 1 composed of a reinforcing layer 2 and a liner layer 3, with a hydrogen charging pressure of 30 MPa or higher; and a hydrogen absorbing material and a carrier for holding said hydrogen absorbing material (hydrogen absorbing material portion 4) contained in the pressure container 1 are included, and a volume fraction X of the hydrogen absorbing material with ?m?100 kg/m3 with respect to an internal volume of the pressure container 1 is 5(%)?X?20(%), where ?m denotes a maximum hydrogen absorption amount per unit volume of the hydrogen absorbing material (kg/m3); X=100 ·Vm/Vi (%); Vi is an internal volume of the pressure container (L); and Vm is a volume of the hydrogen absorbing material in the pressure container (L).

Abstract: A pressure container 1 composed of a reinforcing layer 2 and a liner layer 3, with a hydrogen charging pressure of 30 MPa or higher; and a hydrogen absorbing material and a carrier for holding said hydrogen absorbing material (hydrogen absorbing material portion 4) contained in the pressure container 1 are included, and a volume fraction X of the hydrogen absorbing material with ?m?100 kg/m3 with respect to an internal volume of the pressure container 1 is 5(%)?X?20(%), where am denotes a maximum hydrogen absorption amount per unit volume of the hydrogen absorbing material (kg/m3); X=100 ·Vm/Vi (%); Vi is an internal volume of the pressure container (L); and Vm is a volume of the hydrogen absorbing material in the pressure container (L).

Abstract: In case of a trouble in any unit network of a communications network system which comprises a plurality of unit networks, communications are relieved and reliability of communications is improved. The respective unit networks are connected through internetwork connection circuits, and communications are normally made on each unit network by a communication path formed by performing loopback of remote communication devices at both ends of the individual unit network. If a trouble such as a disconnection fault occurred in a certain unit network, the loopback of the internetwork connection circuit of the remote communication devices at both ends of the unit network having the trouble is relieved to form an alternate communication path, and this alternate communication path is used to keep the communications between local communication terminals adjacent to the troubled spot.

Abstract: This relates to a voice signal transmitting method and exchange system using this whereby excellent speech quality can be maintained by reducing the celling delay on voice compression and celling/decelling delay on relay-exchanging. Voice compression/framing/celling units 20A, 20B, 20C corresponding to ATM exchanges 10A, 10B, 10C within the network are provided. When a call is made between telephone set 50-1 and telephone set 50-3 or 50-5, voice compression/framing/celling unit 20A distributes the voice signal that is input from PBX 30A to each remote party PBX 30B, 30C; the voice signal distributed to each of these remote stations is compressed, and, at fixed time intervals, only busy channels are multiplexed on to a variable-length TDM frame, this multiplexed frame being then converted into ATM cell form at each PBX 30B, 30C and transferred from ATM exchange 10A to ATM exchange 10B or 10C.

Abstract: A time division multiplexer includes a plurality of multiplexing units and a plurality of terminal adapters. Each multiplexing unit is connected to one or more terminal adapters by a respective bus. The time division multiplexer further includes a repeating adapter which has a memory. The repeating adapter is connected to two or more multiplexing units to be accessed for temporary storage of the data to be repeated from one to the other.