Lucent Technologies DEFINITY Installation For Adjuncts And Peripherals page 52

DEFINITY ECS Release 8.2
Installation for Adjuncts and Peripherals 555-233-116
4 Data Modules and Asynchronous Data Units
Sett Hardware Options
DATA
METERING
POWER
TEST
PHO NE
Figure 12. 7400B Data Module
To configure the 7400B data module, proceed as follows.
!
WARNING:
Electrostatic discharge can severely damage sensitive electronic circuits.
Before handling any electronic hardware, be sure to wear a grounding wrist
strap or other static-dissipating device. Do not touch exposed circuitry or
semiconductor chips.
1. If you are not attaching a telephone to the data module, activating data
metering, or enabling busyout on the local loop, you can use the factory
default settings. The 7400B data module is already configured for your
use. Stop now.
2. Otherwise, remove the access panel on the top of the case by grasping
the rear lip of the panel and pulling sharply upward.
3. Locate the DIP switch block, a bank of tiny switches on the circuit board,
in the center of the opening.
DIP switches 1, 5, and 8 control the attached telephone (if any), data
metering, and loopback on local loop.
AA CD RD SD TR O H
7400B Data Mod ule
LINE
POWER
CHECK
SPEED
DATA
PORT 2
PORT 1
7400b RBP 032596
Issue 1
April 2000
30