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NOTE
These procedures should be performed only under the guidance of
a
field
engineer.
To view the previous set of modem data obtained while in the
SECURE mode, press
I
PRGM
I .
followed by the digit
OJ ,
while in the
CLEAR MODE.
The display messages discussed in this chapter have been
incorporated in the STU 111/SECTEL's software to inform the user
when the terminal is not operating properly or when it has failed to
perform a selected function. Generally, the display message
contains the current status of the terminal on the top line and the
recommended user's prompt on the bottom line. For example, the
message:
CLEAR
VOICE
---CIK NEEDED---
r ... :-·. r···
=""-a--
•···.
!
1--
1··· , .... ,
····· ·····
~
... r::.
i::: ..
:::=
.:::=
1 ••. •
L ..
1:::.
1···; ri:.
···H ·····
TONE
2.4
Notifies the user that a valid Crypto Ignition Key (CIK) must be
inserted and prompts the user to press
I
CLEAR
I
to enter the clear
mode of operation.
The display messages are listed in alphabetical order by first line
within five related error groups as follows:
• Clear Call
• Secure Call
• Fill
• Key Management Center (KMC)
• Miscellaneous.
This enables the user to apply corrective action as quickly as
possible. Some of the messages are preceded by a beep to alert
the user that action is required at the terminal.
NOTE
Invalid key presses may
cause a
beep to occur, but
are
otherwise ignored.
8·3
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