Nortel Networks Circuit Card 사용자 설명서
Page 428 of 906
NT7D16 Data Access card
Introduction
The NT7D16 Data Access card (DAC) is a data interface card that integrates
the functionality of the QPC723A RS-232 4-Port Interface Line card (RILC)
and the QPC430 Asynchronous Interface Line card (AILC). This
combination allows the NT7D16 DAC to work with the RS-232-C interface,
the RS-422 interface, or both.
the functionality of the QPC723A RS-232 4-Port Interface Line card (RILC)
and the QPC430 Asynchronous Interface Line card (AILC). This
combination allows the NT7D16 DAC to work with the RS-232-C interface,
the RS-422 interface, or both.
The DAC supports up to six ports, each capable of operating in RS-232-C or
RS-422 mode. Each port supports its own parameters that, once configured
and stored in the system database memory, are downloaded to the card.
RS-422 mode. Each port supports its own parameters that, once configured
and stored in the system database memory, are downloaded to the card.
You can install this card in any IPE slot.
Features
Light Emitting Diodes (LEDs) indicate the status of the card, the call
connection, and the mode (RS-232-C or RS-422) the DAC is operating in. A
push-button toggle switch allows you to scan all six ports and monitor the
activity on each port.
connection, and the mode (RS-232-C or RS-422) the DAC is operating in. A
push-button toggle switch allows you to scan all six ports and monitor the
activity on each port.
The DAC supports the following features:
•
Asynchronous and full duplex operation
•
Keyboard dialing
•
Hayes dialing
•
Data terminal equipment (DTE)/data communication equipment (DCE)
mode selection
mode selection
•
Modem and gateway connectivity in DTE mode
•
Terminal and host connectivity in DCE mode
•
Forced or normal DTR
•
Hotline
•
Remote and local loopback testing
•
Virtual leased line mode
•
Inactivity timeout