Nortel Circuit Card, Installation Manual, Page: 440 / 908

Page 440 of 906 NT7D16 Data Access card
553-3001-211 Standard 3.00 August 2005
Selecting the proper mode for Modem connectivity
Select modes 0, 1, 2, and 3 when the DAC is connected to different types of
modems for inbound and outbound modem pooling. In these modes, the DAC
operates as a DTE, monitors the DSR, DCD, and RI control leads, and drives
the DTR lead. No menus are given and no characters are echoed when DCD
is OFF. All prompts and messages are enabled for inbound calls and disabled
for outbound calls.
In modes 0 and 1, the DAC drives the DTR lead OFF when in the idle state,
and ON when processing an incoming or outgoing call.
In modes 2 and 3, the DAC drives the DTR lead ON except when the call is
being disconnected. At disconnect, DTR is dropped for 0.2 seconds and then
returns to ON.
14 (DCE) ON
“KBD On”
(prompts
on) ON
Forced OFF
Not
Hotline Terminal similar to
ASIM when set to
forced DTR and
Not Hotline Modes 12, 13, 14,
and 15 are for
RS232 Terminal
connectivity
(similar to ASIM)
15 (DCE) ON
“KBD On”
(prompts
on) ON
Forced On
Hotline Continuous Hotline
when DTR is ON
Table 157
DAC mode of operation selection (Part 5 of 5)
Service changeable downloadable parameters (LD 11)
Operation
mode
Modem/
Gateway/
Host/KBD
Forced
DTR*
Hotline
Type of device
to be connected
Group selection
DEM PRM DTR HOT
* Not prompted for Type = R422. Defaults for Type = R422: DEM = DCE and DTR = OFF.