Nortel Networks Circuit Card 311 - Manual (Page 442)

442 NT7D16 Data Access card
Programing DAC for mode 11 in service change LD 11
The DAC must be configured as R232 (the Autodial feature is used for this
mode). The DAC must not be configured as an ADM trunk.
Selecting the proper mode for Terminal connectivity
Select modes 12, 13, 14,and 15 when the DAC is connected to different
types of terminals. In these modes, the DAC operates as a DCE, drives
DSR, DCD, and RI control leads, and monitors DTR lead in modes 12, 13,
and 15 (see
Figure 113 "DAC to Terminal connectivity" (page 442) ). DTR is
ignored in mode 14. All the menus and prompts are sent to the terminals
and all the commands from the terminals are echoed. CTS, DSR, and DCD
are driven OFF during the idle state (data call is not established).
When the call is released, DSR and DCD are turned OFF for 200 ms. The RI
lead is controlled only in modes 12, 13, and 15, and is driven OFF in the idle
and connect states. An incoming call to the DAC causes the RI lead to go
ON for 2 seconds and then OFF for 4 seconds until the call is answered by
the terminal. When the terminal turns DTR ON, the DAC answers the call.
Mode 12
This mode should be selected when the DAC is connected to a terminal
(DTE) for inbound and outbound data calls. This mode is similar to the
operation of the ASIM when set to not-forced-DTR and not-Hotline. In this
mode, call origination and auto-answer are executed by the DAC unless the
DTR lead is driven ON by the terminal. Any terminal that drives the DTR
lead ON can be used with this mode (such as VT100 or VT102).
Figure 113
DAC to Terminal connectivity
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311 01.04 Standard
Release 5.0 23 May 2008
Copyright © 2003-2008, Nortel Networks
.