摘要:
A multiplex communication equipment which can switch circuits and which enables cost saving in circuit usage of a public network when the circuit is switched. Multiplex communication equipment 1 with circuit switching control, which is selectively connected to either an active circuit 5, having a large transmission line, or a spare circuit 6, having limited transmission line. A data terminal interface (I/F) 18 is connected to data terminal equipment 2, and a voice terminal I/F 17 is connected to voice terminal equipment 3. An active circuit I/F 13 is connected to circuit 5, and a spare circuit I/F 14 is connected to circuit 6. A multiplexing control section 16 multiplexes data and voice information, and a circuit switching section 15 switches circuits. A control section 11 controls the aforementioned sections, and a memory 12 stores multiplexed information of the active circuit and the spare circuit and circuit switching information, and keeps circuit speed slow by multiplexing minimum required information only at the spare circuit, thus saving the circuit usage charge.
摘要翻译:一种多路通信设备,其可以切换电路,并且当切换电路时能够节省公共网络的电路使用成本。 具有电路切换控制的多路通信设备1选择性地连接到具有大传输线路的有源电路5或具有有限传输线路的备用电路6。 数据终端接口(I / F)18连接到数据终端设备2,语音终端I / F 17连接到语音终端设备3.有源电路I / F 13连接到电路5,备用 电路I / F14连接到电路6.多路复用控制部分16复用数据和语音信息,并且电路切换部分15切换电路。 控制部分11控制上述部分,并且存储器12存储有源电路和备用电路和电路切换信息的复用信息,并且仅通过在备用电路上复用最小所需信息来使电路速度变慢,从而节省电路使用 收费。
摘要:
Multiplex communication equipment 1A used in a multiplex communication system, has a memory portion 12 memorizing the equipment number for the communication test. When there is an incoming call with reference to the same equipment number as one of the multiplex line 1A from the multiplex line 2A, the accommodation line portion 14a under setting a loop receives the incoming call and the communication test is done through a route for the communication test. When there is no accommodation line under setting the loop, the incoming call is rejected.
摘要:
A maintenance and supervising system and method for a multiplex communication system having mutually connected multiple pieces of multiplex communication equipment. A call controller executes call control by common channel signaling. A multiplexer multiplexes multiple communication data, and a fixed connection allocation device allocates multiplexed data within a multiplex circuit fixedly. A dynamic connection allocation device allocates multiplexed data within the multiplex circuit dynamically, and a piece of connection form switching equipment is provided. A piece of terminal equipment for maintenance and supervising is connected to one of the pieces of multiplex communication equipment. A call connection message is transmitted via common channel signaling, and the piece of maintenance and supervising equipment and the piece of multiplex communication equipment to be maintained and supervised are connected by securing a dynamic connection band in a multiplex circuit at the time of maintenance and supervising. The dynamic connection band is used for normal communication when not in use for maintenance and supervising.
摘要:
A multiplex communication system is provided with a plurality of multiplex communication equipment connected to each other through an exclusive line. The multiplex communication equipment have a plurality of a structure information for setting multiple bands. The multiple bands are changed over by changing-over the structure information on the basis of a previous-set schedule.
摘要:
A line switching system of a dynamic band variation unit (10) having a function of connecting a dynamic data terminal device (30A) to an opposing data terminal device (30B) through a number of trunk lines such as a dedicated line (21) or ISDN lines (22-24), wherein the quantity of data to be sent out to a trunk line is varied after the quantity of data to be stored to the dynamic band variation unit is adjusted by varying the communication speed of the data transmitted from the dynamic data terminal unit, when varying the data communication quantity of the data terminal device by increasing or decreasing the number of trunk lines.
摘要:
A technology is disclosed to enable VP/VC on an ATM network to be backed up by using an ISDN line without presetting any detailed information regarding a backup VP/VC to be set on the ISDN line. An ATM switch A30 is provided to establish the ISDN line connecting with an ATM multiplexer A20 when any failure occurs in an ATM transmission path contacting with the ATM multiplexer A20. Negotiation is carried out with ATM multiplexer A30 by using the established ISDN line so as to decide a channel characteristic of a backup VP/VC to be set on the ISDN line. Then, the ATM switch A30 and the ATM multiplexer A20 communicate with each other by using the backup VP/VC having the decided channel characteristic on the ISDN line.
摘要:
The present invention provides a display device of high brightness which can eliminate brightness irregularities on a display surface while preventing the degradation of display quality attributed to an undesired electric field generated at the time of performing inverter driving of the cold cathode fluorescent lamps of a backlight. In a liquid crystal display device, a plurality of cold cathode fluorescent lamps of a backlight unit is arranged along a short axis of the display device. The cold cathode fluorescent lamp has a high-voltage electrode thereof connected to an inverter circuit and a ground electrode thereof connected to a ground. Further, the plurality of cold cathode fluorescent lamps arranged along the short axis have electrodes thereof arranged alternately between the high-voltage electrode and the ground electrode.
摘要:
Sensitivity of a velocity modulation device is increased and noise such as a leakage magnetic field and a leakage electric field from the device are reduced to thereby lower power consumed by the device. A cathode ray tube device and a television set each include a velocity modulation device on a cathode side of a deflection yoke. All or part of the circumference of a velocity modulation coil to modulate scan beam velocity is covered with material having an initial permeability of at least 10 at 2 MHz.
摘要:
A Pb-base alloy containing 1 - 3% Sn and 0.5 - 3.5% Bi, allowing less than 2% Sb to be further contained, resists attack from acids formed in deteriorated lubricating oils. Either an alloy of Cu and the Pb-base alloy or a porous Cu mass impregnated with the Pb-base alloy is a highly corrosion-resistant bearing material, and the Pb-base alloy serves also as a direct overlay on a Cu-base bearing material due to negligible heat diffusion of Sn from the alloy.
摘要:
Pre-shipment data includes, in addition to product data representing features of the products P, data that associate product identification data for identifying each of the products P included in the product data with package identification data for identifying a carton C containing the products P. A management warehouse system 3a assumes that products corresponding to the product identification data associated with the package identification data have arrived if the package identification data included in barcode 52 scanned by a reader device exist in the pre-shipment data transmitted from the management warehouse system 3a.