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CHAPTER 3: FRONT PANEL FEATURE ACCESS
Synchronous/Asynchronous Menu
Introduction
The Synchronous/Asynchronous (Sync/Async) menu appears only when the 7500 is configured
with a Multipurpose Enhancement Board. The system bypasses this menu when the Multipurpose
Enhancement Board is not installed. The Sync/Async menu is used to change the operation of the 7500
from synchronous to asynchronous and back again. What appears on the display depends on how the
option is currently set. The choices will be to Remain at the current value or to Change to the other
value. If you get into this menu by accident, press [
[
] and [
] at the same time to return (Home).
NEXT/NO
BACK
Changing from synchronous to asynchronous or vice versa will cause all stored and
active options to be reset to their factory values. In addition, all stored numbers will be
lost. Before making such a change, make sure this is what you really want to do.
The procedure outlined below is from the (Home) display. If you are not at the (Home) display, press
[
] and [
] together to return to the (Home) display.
NEXT/NO
BACK
1.
Starting from the (Home) display, press
[
/
] three times.
NEXT
NO
2.
Press [
ENTER/YES
3 . Press [
].
NEXT/NO
4.
Press [
ENTER/YES
20
].
].
] until Exit appears on the display or press
NEXT/NO
[ SYNC/ASYNC? ]
is displayed.
[ REMAIN ASYNC? ] appears on the display if
you are currently set up for asynchronous
operation; [ REMAIN SYNC? ] appears if you are
currently set up for synchronous operation.
[ CHANGE TO SYNC? ] or
[ CHANGE TO ASYNC? ] will appear on the
display as appropriate.
[ EIA MODE CHANGED ]
[ SELFTEST PASSED ]
[ AT&T ISDN 7500 ]
[ FP2.X(X.X) ]
is displayed.
The change is made and the system returns to
the (Home) display.
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