Hardware Installation - AT&T 7400B Plus User Manual

DEFINITY Communications System
7400B Plus Data Module
User´s Guide
HARDWARE
INSTALLATION
Speakerphone Disable/Enable Option (SW1-7)
This option applies only to voice dial calls. When the
speakerphone option is enabled (SW1-7 set to ''OFF''), the
speakerphone is turned on automatically when you use your
terminal to dial a voice call. If you want to disable the automatic
speakerphone feature, disable the speakerphone option (SW1-7 set
to ''ON''). This option will have no effect if the voice terminal
does not have a speakerphone.
Note: When SW1-6 and SW1-7 are set to ''OFF'', the 7400B Plus
automatically activates the speakerphone at the beginning
of the voice call so you can hear dial-tone and touch-
tones. When SW1-6 is set to ''ON'' and SW1-7 is set to
''OFF'', the activation of the speakerphone is delayed
until dialing is complete.
Make Busy on Local Loop Option (SW1-8)
This option controls the make-busy feature of the 7400B Plus.
When the option is enabled (SW1-8 set to ''ON''), the 7400B Plus
will busyout the DCP line when either the Local Loopback or
Local Loopback/Self-Test mode is entered. The busyout
condition is released when the test ends.
Note: A change in the setting of this option becomes effective
immediately when the 7400B Plus is in the idle mode or as
soon as it is returned to the idle mode. The 7400B Plus is
in idle mode any time that it is not connected to an active
data call.
This section outlines procedures for setting the DIP-switch
options, connecting the EIA-232-D cable, installing the power
supply, and connecting the D8W telephone cord(s).
To avoid possible shock hazards and damage to the
Caution:
equipment, you should perform the installation steps
in the order given.
CHAPTER 2: INSTALLATION
Page 2-11