4
Using The Diagnostic Function
The diagnostic function on the DXPT1 board provides a method for obtaining information about the T1
operation. You can do this either on-site or from a remote location by sending and receiving coded
messages. Remote operation is described in section 4.8.
4.1
Understanding The Diagnostic Switches And Indicators
The diagnostic portion of the DXPT1 board contains eight DIP switches, eight green LEDs, and a “clear”
pushbutton for clearing functions. Set the DIP switches to request certain T1 system information. When
testing from a remote location, using a computer and modem, you can similate the switch settings by
sending a coded message.
The system responds to your request for information by
lighting certain LEDs to provide you with the requested
information. If you are testing from a remote location,
the system responds by sending a coded message that
similates the lighted LEDs.
Use the clear pushbutton to stop any counting function
(denoted by the LEDs sequencing) and reset the counter.
The diagnostic port is a monitor mode only access. You
cannot cause harm to the equipment by moving the
switches or pushing the clear pushbutton. Leaving any
of the switches on will not cause any operational
problems.
Since the operation is cryptic, the customer normally
doesn’t use the diagnostic monitor. Functions of the port
are to simplify problem solving in the field
4.1.1 Determining Channel Number
The letters ABCDE in switch positions 4 through 8 are
used to designate a channel number in many of the tables used on the following pages. See the table
below for the relationship between the letters ABCDE and channel numbers 1 through 24. (Example, a
DIP switch setting of 10100101 requests trunk assignments on channel 6).
CHANNEL
A
B
C
D
E
CHANNEL
A
B
C
D
E
CHANNEL
A
B
C
D
E
1
2
3
4
5
6
7
8
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
ON
ON
ON
ON
OFF
OFF
ON
ON
OFF
OFF
ON
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
9
10
11
12
13
14
15
16
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
ON
ON
ON
ON
ON
ON
ON
ON
OFF
OFF
OFF
OFF
ON
ON
ON
ON
OFF
OFF
ON
ON
OFF
OFF
ON
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
17
18
19
20
21
22
23
24
ON
ON
ON
ON
ON
ON
ON
ON
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
ON
ON
ON
ON
OFF
OFF
ON
ON
OFF
OFF
ON
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
T1005
Diagnostics
LED 1
LED 8
Clear
Switch 1
Off
On
Switch 8
DXPT1 Diagnostic Switches And Indicators
Troubleshooting The DXPT1 Installation
IMI89–207
Throubleshooting The DXPT1 Installation – 13
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