SECTION
MITL9105/911
O-096-350-NA
(..A
TABLE 2-l
SCANNER DISPLAYS
Display
Meaning
A
Available
-
not in use
C
Conversation
-
in use
E
Error
-
found faulty by diagnostics
F
Found
-
in use by test line
0
Optional
-
no specific circuit selected
AA
Beginning of Data Load
01-99
Each Record increments
00-30
Scanner display
EE
Checksum Error on Data Load
2.08 The Master Reset button is used in the initial programming
process as part of the RAM clearing procedure and may also be
used to reset the system. When the Master Reset button is pressed,
the processor is momentarily turned off, all existing calls are dropped,
and all system crosspoints are released. The processor then starts, and
the diagnostics begin operating, in the same manner as when the
system power is first turned on.
2.09 The Baud Rate switch selects the RS-232 port baud rate as
either 300 or 1200 baud. The number of stop bits, parity and
word length is determined by the DIP switches on the face of this card.
Tone Control Card
2.10 This card provides dial tone, busy tone,
ringback
tone and
miscellaneous tone, along with two DTMF generators and two
rotary dial generators which are used for diagnostic tests. The DTMF
generators are also used when dialing from the console. The four
thumbwheel switches used with the test line and programming are
also located on the tone control card. In addition, the circuits for Page
1 and Page 2 outputs, and the Music-on-Hold inputs are located on
this card (see Figure 2-2).
2.11
Tone Control Thumbwheel Switches. The four thumbwheel
switches on the Tone Control card are used in conjunction with
programming, maintenance and load functions. The number settings
read from top to bottom. Programming functions are shown in Table
2-2.
(a) Maintenance Functions:
The thumbwheel switches may be
used in conjunction with the test line to select receivers and
speech paths. The top two switches are used to select a re-
ceiver by setting the switches to the last digits of the required
receiver equipment number (even numbers only, 90-20). If set
to 99, any free receiver will be selected. The bottom two
switches are used to select a speech path (01-31 for speech
paths, or 32 for the Music-on-Hold speech path). If set to 99,
any free speech path will be selected. When not using the test
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