摘要:
Disclosed are call processing methods which are performed by a network terminator located at a subscriber's premise. The network terminator is coupled to a digital network and a communication device at the subscriber's premise and can perform call waiting, caller identification, call conferencing without intervention from a telco's switching system that requires an additional charge to the subscriber for these services. In addition, the network terminator can perform a method which allows two digital communication devices coupled to one S-bus to share a communication session. In another embodiment, up to a six way conference call can be established with an analog telephone coupled to an ISDN network via the network terminator of the present invention.
摘要:
A data communication method in which a transmitting station divides data into a plurality of data blocks and transmits the data blocks in parallel through a plurality of communication lines, and a receiving station receives the data blocks transmitted from the transmitting station through the plurality of communication lines and composes the data blocks into original data. In the data communication method, it is detected that a new transmission request is present during a parallel data transmission through a plurality of communication lines, one or more of the communication lines are released to continuously use the remaining communication lines for the parallel data transmission in response to the detected new transmission request, and a new data transmission is performed through the released communication line or lines.
摘要:
A concentration method and concentrator arrangement enable a plurality of synchronous or asynchronous data terminals to be served by a common B channel of an ISDN to which the data terminals are connected by a digital subscriber termination and terminal adapters for transmission in packet mode. The terminal adapters are connected to the digital subscriber termination at the S0 basic access level. In the event of a request for B channel communication between a first data terminal served by a first terminal adapter and a packet mode ISDN port to which a second data terminal already has access via a second terminal adapter and via a first B channel, a transit connection is established between the two terminal adapters via the digital subscriber termination using a second B channel. Data packets conveyed between the first data terminal and the ISDN port are conveyed via the terminal adapter of the second data terminal.
摘要:
A multimedia communication apparatus so adapted that when the transmission speed of video information on a communication line is inadequate, transmission of the video information is suspended and notification is given of the fact that suspension of transmission is in effect. When communication is on hold, only prescribed media information is transmitted and needless connections are cancelled. In response to a designation releasing the apparatus from the holding state, the connection state which prevailed prior to hold is promptly restored and communication is resumed.
摘要:
A facsimile apparatus processes a predetermined signal from a second external apparatus by means of correlating a first external apparatus with the second external apparatus if the facsimile apparatus is communicating with the first external apparatus when the second external apparatus transmits the predetermined signal to the facsimile apparatus. The signal is used for the operative connection between the facsimile apparatus and the second external apparatus. According to the present invention, the second external apparatus is prevented from frequently transmitting the predetermined signal to the facsimile apparatus. The present invention is applicable to a facsimile apparatus used for an integrated digital network.
摘要:
A method and apparatus for speaker recognition in a telephone switching system. For speaker recognition in, in particular, a system fashioned as an ISDN communications system, speech specimens are input into a telephone terminal equipment (T1, T2) and are pre-processed there, being, in particular, sampled with a sampling rate that is doubled in comparison to the usual sampling rate. The samples are transmitted to a switching system (VA) in the two ISDN data channels (B1, B2) in alternation, the actual speaker recognition (SPR) being carried out in this switching system (VA).
摘要:
An ISDN interface is provided on a card, which is adapted for mounting in a terminal computer and which is operable to exchange data with a terminal computer and an ISDN. The ISDN interface card includes a protocol processor that is programmable to process data encoded in accordance with a number of different protocols and a digital signal processor that is programmable for data compression, encryption and facsimile applications, and u-law and a-law conversion, among other applications. The ISDN card dynamically allocates data calls between one or two B-channels to achieve a data transmission rate of 128 kbps. A power supply with a ring generator is provided to allow for the use of an analog telephone with the ISDN card. The ISDN card is programmable to allow users to create customized screens for various call processes, and to allow for the updating of a flash ROM coupled to the protocol processor through the terminal computer and the ISDN.
摘要:
Disclosed are call processing methods which are performed by a network terminator located at a subscriber's premises. The network terminator is coupled to a digital network and a communication device at the subscriber's premises and can perform call waiting, caller identification, call conferencing without intervention from a telco's switching system that requires an additional charge to the subscriber for these services. In addition, the network terminator can perform a method which allows two digital communication devices coupled to one S-bus to share a communication session. In another embodiment, up to a six way conference call can be established with an analog telephone coupled to an ISDN network via the network terminator of the present invention.
摘要:
Data communication is started when a first B channel is established between a source terminal and a destination terminal. Immediately before or after the start of a data transmission phase, the destination terminal is called a second time so that a second B channel may be established. Immediately before or after the data transmission phase, the use of one of the B channels is terminated. Accordingly, time required for data communication can be reduced.
摘要:
An integrated services communication system ISDN in which a plurality of ISDN supported terminal stations can be coupled to an S.sub.0 bus coupled to a private branch exchange, of which a maximum of 2 terminal stations can be active over B-channels. Them is proposed also to connect incompletely ISDN supported terminal stations to the S.sub.0 bus, which stations have many non-ISDN supported features, there being investigated on line cards which type of terminal station is connected. On the basis of a Terminal Endpoint Identifier (TEI) in a layer-2 message, either a standard ISDN protocol is handled from layer-2 onwards, or a firm-owned protocol.