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VOICE TONE MODULE (VTM)
18-2
Figure 18-1 VOICE BUSES
Table 18-3 VTM PCM BUS MESSAGES
EPROM PART NO. SLOT DESCRIPTION
VTM 1
U3 023-9998-132 0 Silence with the PCM M-Lead set, Data of 0ffH
U4 023-9998-211 1 Busy Tone, 480 Hz and 620 Hz at -3 dBm at a 0.5 second ON and 0.5 second
OFF rate with continuous PCM M-Lead set.
U5 023-9998-137 2 Intercept, 480 Hz at -13 dBm for 0.5 second, then 620 Hz at -13 dBm for 0.5 sec-
ond rate with continuous PCM M-Lead set.
U6 023-9998-140 3 Alignment Tone, 1020 Hz at -6 dBm continuous with continuous PCM M-Lead
set.
U7 023-9998-212 4 Dial Tone, 350 Hz and 440 Hz at -3 dBm continuous with continuous PCM M-
Lead set.
U8 023-9998-184 5 1500 Hz at +6 dBm for 100 milliseconds with 750 Hz at +3 dBm for 100 milli-
seconds with continuous PCM M-Lead set.
U9 023-9998-213 6 Ringing Normal, 440 Hz and 480 Hz -3 dBm at a 1 second ON and 3 seconds
OFF rate with continuous PCM M-Lead set.
U10 023-9998-214 7 End Call Tone, 1020 Hz at -3 dBm, 3 beeps at 0.1 second on, 0.1 off, 0.1 on, 0.1
off, 0.1 on, off, with a PCM M-Lead start pulse. There is 8 beep sets in 4 sec-
onds.
VTM 2
U3 023-9998-215 8 Queue Ringback Tone, 440 Hz and 480 Hz at -10 dBm at a 0.5 second ON and
0.5 second OFF rate with continuous PCM M-Lead set.
U4 023-9998-145 9 "The number you have dialed is not authorized."
U5 023-9998-146 10 "The system is busy."
U6 023-9998-147 11 "There are no lines available."
U7 023-9998-216 12 "Your call has been queued."
U8 023-9998-217 13 "You have been removed from the queue."
U9 14 Reserved and Undefined.
U10 15 Reserved and Undefined.
CIMs CCMs
VOICE
TONE
MODULE
VTM
CONVENTIONAL
CHANNEL
MODULE
INTERFACE
CHANNEL
MODULE
VOICE TONE MODULE BUS
MASTER SYNC / MASTER CLOCK
DISPATCH
MODULE
CHANNEL
DCMs
TELEPHONE
MODULE
INTERFACE
TIMs
NETWORK
SYSTEM
MODULE
SNMs
WIDE
MODULE
AREA
WA Ms
LOGGING
MODULE
ENCODER
LEMs
TX/RX PCM