摘要:
According to the invention, a passive ISDN adapter board is made compatible with a modem connected to the serial connectors by: a serial controller (1) known per se, as is normally used to connect an external data transmission device; an ISDN data transmission controller (2) connected to the serial controller and controlled by the CPU of the computer (4); and an ISDN connection controller (3) controlled by the CPU of the computer (4) and connected to the ISDN controller, without the need to use the INT-14-H interface for the evaluation process. This solution is based on the idea of simulating an externally connected data transmission device with the aid of the processor of the data terminal device.
摘要:
Method for initializing a set of at least two ISDN adapter cards (210-240) being plugged within a workstation including a main processor and an ISDN primary adapter (222) for allowing the connection of said ISDN adapter cards (210-240) to an ISDN primary gate, each of said ISDN adapter cards being provided with means (640-670) for handling at least one B-channel, first processing means (140) associated with memory storage (140). The ISDN primary adapter (222) comprising second processing means (100) associated with second memory storage. The method involving the step of: performing a polling (12) in said ISDN primary adapter (222) consisting in the transmission of a specific polling pattern to each of said ISDN adapter cards, in response to the reception of said polling pattern in one of said ISDN adapter cards, transmitting a first pattern consisting of a request pattern (14) to said the processor located in the workstation for requiring a loading of the second memory storage with operational code transferred from the workstation to the ISDN adapter card (210) and the ISDN primary adapter (222), in response to the request pattern received by the main processor (260), transmitting a second pattern to the ISDN adapter (222) via the ISDN adapter card (210) that have transmitted the first pattern, so that the main processor in the workstation and the processor in the ISDN primary adapter recognize the ISDN adapter card that has respectively transmitted the first and third pattern to the workstation and to the ISDN primary adapter (222) be considered as the master ISDN adapter card which will be used in the future for the transmission of the control information and the D-channel. Additionally, that ISDN adapter card is used for the downloading of the operational code from the workstation to the memory storage located into the ISDN primary adapter (222). This results in the possibility of loading the different required software routines in the appropriated locations within the cards so that all work together together to handle a full primary ISDN frame.
摘要:
A subscriber line signalling apparatus for use in an asynchronous mode communication system includes a switching circuit (30) having a plurality of input terminals (12-1 to 12-j) and a plurality of output terminals (13-1 to 13-k). The switching circuit (30) selectively communicates fixed length information packets to an adaptation processing unit (100). The adaptation processing unit (100) reassembles the fixed length packets to signalling frames, and transmits them to a frame processor (40).
摘要:
Methods, systems, and devices for dynamically adjusting a user interface provided by an external unit of a hearing device. In an example method, the external unit determines whether a state of the external unit is one of (i) a coupled state when the external unit and the stimulation unit are coupled or (ii) a decoupled state when the external and the stimulation unit are decoupled. The external unit then provides one of (i) a first user interface when the determined state is the coupled state or (ii) a second user interface when the determined state is the decoupled state. The second user interface provides access to a greater number of functions of the hearing device than first user interface provides.
摘要:
A method and apparatus for selectively passing various types of telephony information between a data communications port on a digital telephone and a computer run application program. In one embodiment, the application program can select a subset of telephony events by way of a telephony command to the telephone's data communication port. This command is processed by a telephony command processor within the data communications controller which, in turn, sets a programmable event mask within the telephone. In response to the event mask being set, only the selected telephony events are spontaneously reported to the host computer and application program.
摘要:
Zur Vermittlung von Paketdaten im ISDN-D-Kanal über eine Digital-Vermittlungsstelle soll das aufwendige Einschleifen eines Frame Handler in die Verbindung zur Bearbeitung von OSI-Schicht-2- und -3-Funktionen verbessert werden. Dazu wird aufgrund einer Zielinformation in der SET UP Nachricht durch eine OSI-Schicht-3-Steuereinheit (SE3) ein Verbindungsaufbau zwischen den zwei OSI-Schicht-2-Steuereinheiten (SE1, SE2) der Vermittlungsstelle (VST), an die die Datenendeinrichtungen (DEE1, DEE2) verbindbar sind, aufgebaut. Es erfolgt dann ein direkter Paketdatenaustausch zwischen den OSI-Schicht-2-Instanzen ohne weiterer Beteiligung der Schicht-3-Instanz.
摘要:
According to the invention, a passive ISDN adapter board is made compatible with a modem connected to the serial connectors by: a serial controller (1) known per se, as is normally used to connect an external data transmission device; an ISDN data transmission controller (2) connected to the serial controller and controlled by the CPU of the computer (4); and an ISDN connection controller (3) controlled by the CPU of the computer (4) and connected to the ISDN controller, without the need to use the INT-14-H interface for the evaluation process. This solution is based on the idea of simulating an externally connected data transmission device with the aid of the processor of the data terminal device.