Mitel SX-200 Documentation page 744

SECTION MITL9105/911 O-096-500-NA
E. Select a Speech Path
5.06 This procedure is used to select a speech path and/or a re-
ceiver when the test line goes off-hook and can be used to
display the status of a speech path or receiver. This function is only
active when the top switch on the Tone Card is set to 9, 0, 1 or 2 and
may only be done from the test.
5.07 The top two switches on the Tone Control Card select the
receiver to be used. The switches should be set to the last two
digits as the low two digits of the receiver equipment number (even
numbers, 90-20). If set to 99, any free receiver is used (see Figure 5-l).
The bottom two switches select a speech path to be used, set up as
the speech path number (01-31). or the Music-on-Hold speech path
may be selected as 32 (in which case no receiver will be connected). If
set to 99, any free speech path is used.
5.08 After setting the switches, when the test line goes off-hook, it
waits for the selected speech path to become free and seizes it.
It then waits for the selected receiver to become free. A busied-out
speech path or receiver may be selected; the speech path may be used
normally but the receiver will not respond to dialing. If an illegal
number is set up, no device will be selected. The two 7-segment
displays on the Scanner Card show the status of the receiver and/or
speech path when a specific one has been selected. The top display is
for the receiver and the bottom display for the speech path. The
readouts are:
0
A - Available - not in use
a
C - Conversation - in use
a
E - Error - found faulty by diagnostics
l
F - Found - in use by test line
l
0 - Optional - no specific circuit selected.
5.09 Once the test line has obtained a speech path and a receiver, it
does not change its selection until it originates a new call.
Changing the switch settings meanwhile, will cause the display to
change to reflect the status of the receiver and speech path whose
numbers are on the switches. If a valid speech path is selected, but an
invalid receiver is selected (e.g., 91), then the line is connected to the
speech path, no receiver is selected, and no dial tone is introduced.
This provides the ability to listen to a speech path for the presence of
noise. The test line, since it has not been assigned a receiver, will not
time-out and revert to reorder tone. It is possible to listen to .any 1
unused speech path by remaining off-hook and selecting the speech
path number with the bottom two switches.
F. Slot Initialization
5.10
Occasionally, when circuit cards are plugged into a shelf, the
logic circuits on the card may not reset completely. In order to
guarantee complete reset of all card logic, a slot initialization proce-
dure must be performed. This procedure allows the service personnel
to insert a card into a shelf and initialize the card slot. To initialize the
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