Computer Hardware Installation Guide

478 NT7D16 Data Access card
•
If the DAC is used to call out through modem pooling, where the modem
pool consists of dumb modems connected to QMT8 SADM or QMT12
V.35 SADM, the DAC port should be configured with a secondary DN,
which has a single appearance.
•
The Virtual keys must be assigned as shown in Table 186 "Virtual key
assignments" (page 478).
Table 186
Virtual key assignments
Key number
Feature key SL-1 SL-100 Use
Data DN
00
Required
Secondary DN
11
Required for manual
modem pooling
Call Transfer
2
—
Required for manual
modem pooling
Auto Dial
32
Required for Hotline and VLL
Ring Again
46
Optional
Speed Call
5
3
Optional
Display
6
—
Required
Make Set Busy
77
Optional
Power supply
Be sure that all power requirements are met before installing the DAC.
Operation may be affected by improper power and environmental conditions.
EIA signals supported
The DAC supports a subset of the standard signals. Only 8 leads can be
brought through the backplane connector for each port, totaling 48 leads
for each card slot. Table 187 "EIA signals supported (RS-232-C)" (page
478) lists the EIA signals supported on this card.
Table 187
EIA signals supported (RS-232-C)
EIA
DB-25
Pin
Signal
abbreviation Description
DCE
mode
DTE
mode
BA
2
TD Transmitted Data In Out
BB
3
RD Received Data Out In
CB
5
CTS Clear To Send Out In
Note: RS-422 leads supported are: Tx (transmit) and Rx (receive).
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311 01.04 Standard
Release 5.0 23 May 2008
Copyright © 2003-2008, Nortel Networks
.