SIGNALING SEQUENCE
MODE
SEL) 7
0)
MENU
1)
START
2)
END
- - - - Hz
- - - -
Hz
- - - -
Hz
06 Illegal tone transition (M.O.). Mobile ID
or
phone number sequence is incorrect.
For example, guard tone space, guard
tone,
or
connect tone-space-connect tone
would generate
an
error.
'-----'
SEQ SEL) 1
MESSAGE
ERROR
TABLE 3-9. IMTS
ERROR
MESSACES
SIGNALING SEQUENCE MODE SEL) 7
0)
MENU
1)
START
2)
END
MOBILE
TEL
1)
IMTS 2) MTS
3)
2805
SEQ SEL)1
TEST SEQ SEL) 1
2)
BASE ORIG
TONE
2)
1800
Hz
MOBILE ID
DIALED NO
GUARD FREQ
CONN FREQ
DISC
FREQ
MOBILE
TEL
1)
IMTS 2) MTS
3)
2805
1)
MOBILE
ORIG
TONE
1)
2000
Hz
FIGURE
3-31.
IMTS MOBILE
ORIGINATED
DISPLAY
IMTS
1)
MOBILE ORIG
TEST SEQ SEL) 2
2)
BASE
aRIa
01
Incorrect IMTS tone. M.O. tone was not
one
of
the three possible receive tones:
Connect
Guard
Disconnect.
This error can happen only after the
guard tone has been received.
• IMTS MOBILE ORIGINATED
Figure
3-31
shows a page 7 display. Select one
of
the
three phone systems, by Sequence Select and either
mobile
or
base originated, by Test Sequence Select.
Here the display shows a test sequence menu for IMTS
with the information decoded from the mobile radio for
a mobile originated sequence. The mobile ID and dialed
number vary up to a maximum number
of
seven and ten
digits, respectively. The maximum decoded frequency
is
10,000 Hz with 1 Hz resolution.
Error
messages display
under DISC FREQ (refer to the tone sequence diagrams
in your IMTS Manual).
SCOPE
TRIG
DL
Y)
0.000 SEC
FIGURE
3-32.
IMTS BASE
ORIGINATED
DISPLAY
• IMTS BASE
ORIGINATED
Figure 3-32 shows a page 7 display allowing the operator
to enter a 1 to 7 digit ID for the mobile being tested.
Enter a number in the most significant location. Dashes
replace the desired number
of
digits. Enter the desired
number
of
digits. The other digit locations remain as
dashes. The processor responds to changes
in
the tele-
phone number to allow the next complete dialing se-
quence to be executed with the new number. The display
shows decoded signaling tone frequencies for an IMTS
base originated sequence, with 10,000
Hz
maximum fre-
quency and 1 Hz resolution.
Error
messages display
on
the line above SCOPE. The Analyzer encodes and de-
codes the information defined by figures
3-31
and 3-32.
7635412
- - - - Hz
- - - - Hz
- - - - Hz
MOBILE ID
GUARD
FREQ
CONN FREQ
DISC FREQ
B.a.
means base originated;
M.a.
means mobile originated.
MESSAGEERROR
SIGNALING SEQUENCE
MODE
SEL) 7
ENTER
°FOR MENU
BURST
TO
START
02
03
Too
many digits decoded (IMTS - M.O.).
The mobile ID
or
phone number had too
many pulses (more than ten).
Time-out error (IMTS - M.O.
or
B.O.).
Tone
lasted longer than spec, in specified
state.
MOBILE
TEL
1)
IMTS
2)
MTS
3)
2805
MTS
SEQ SEL) 2
04
Improper sequence (M.O.). Sent mobile
ID before seize tone.
TONE
1)
2000 Hz
TONE
2)
1800
Hz
MOBILE
ID
7635412
05
No guard tone
(B.a.).
Mobile doesn't re-
spond to seize tone.
SCOPE
TRIG
DLY) 0.000 SEC
FIGURE 3-33. MTS MOBILE
TELEPHONE
DISPLAY
• MTS MOBILE
TELEPHONE
Figure 3-33 shows a page 7 display
of
tone 1 & tone 2
frequencies used in generating mobile telephone MTS
'-----"
3-16
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