AT&T 7400B Plus User Manual page 24

CHAPTER 2: INSTALLATION
Page 2-10
Data Metering Option (SW1-5)
When the data metering option is disabled (SW1-5 set to ''OFF''),
the transfer speed of the 7400B Plus will adjust to match the
transfer speed of the remote system. The CONNECT xxxx
message is displayed when a connection is completed.
When this option is enabled (SW1-5 set to ''ON''), it allows the
user to set-up a call to a remote end that is running at a slower
speed than the local data module. (This allows the user to
communicate with a slower speed device without lowering the
speed of the terminal). The CONNECT xxxx message will always
indicate the speed of the local data transfer. The 7400B Plus
performs the speed conversion and uses the CTS lead to flow-
control the user's terminal if it is sending too much data too fast.
During the data transfer, the DATA METERING LED indicates the
state of the CTS lead.
Note: If you are using a PC with a communications package, or
a dedicated terminal that does not support CTS control,
you cannot make file transfers with the data metering
option enabled.
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 in test mode or connected to an active data call.
Suppress Touch-Tone/Dial-Tone (SW1-6)
This option is only valid if the speakerphone enable/disable
option is set to enable. This option applies only to voice dial calls,
and is only valid when the Speakerphone enable/disable option
(SW1-7) is set to enable. When the option is disabled (SW1-6 set to
''OFF''), the speakerphone (if available) is activated before dialing,
allowing the user to hear the dial-tone and touch-tones. When the
switch is enabled (SW1-6 set to ''ON''), the speakerphone is
activated after dialing, allowing the user to hear the far-end
ringing and answer.
DEFINITY Communications System
7400B Plus Data Module
User´s Guide