Toshiba VP 300, Installation Instructions Manual

Page: 272 / 614

The following is an example of the tone information displayed when the VP 300 is
screening a call to a ring-no-answer extension that fails. Refer to the PRT x command in
the Command Summary section for a list of Print Tone output types.
5. Review the PRT display to determine the tone cadence of the tone being monitored. Refer
to the Application Delay Indexes section in this chapter to find the application delay
index(es) that references the error received.
Enter UPDATE to list the current values in the Application Delay Table; at the dot (.)
prompt enter
L APP
Create a tone timing diagram to help determine the tone cadence.
The tone values from the PRT display and the current application delay values listed in the
Application Delay Table can be put on the diagram to determine how much an individual
tone needs to be modified.
For the PRT example above, the application delay indexes that reference the error received
are indexes 50 and 54. Figure 5-21 shows what the failure would look like on a tone timing
diagram. Note that the failure occurred when the PBX sent a TONE ON for 790ms. The VP
300 was set to expect TONE ON (ringback) for no less than 800ms and no greater than
1200ms. This is referred to as the “window.” In the diagram, the window for the silence
period (TONE OFF) between rings is set to no less then 2800ms and no greater than
3400ms. The TONE OFF values are within the window.
Enter
@PRT 1
IN-2
IN-2
IN-0
FLASH
EXPECT DIAL TONE
420 MS
T ON
600 MS
DIAL TONE
DIAL-2
DIAL-2
DIAL-0
2620 MS
T ON
1000 MS
T OFF
2880 MS
T ON
980 MS
T OFF
2920 MS
T ON
790 MS
ANSWER
Toshiba VP Systems Release 7.1 July, 1994
5-114 Installation and Maintenance Manual
————————— The caller enters DTMF digits
————————— The VP System monitors tones for dial tone
————————— Dial tone is detected
————————— VP System dials out DTMF digits
————————— VP System ignores the first tone change
————————— VP System monitors call progress tones from the PBX
to determine the status of the called station
————————— Failure – VP System detects an answer condition
because one of the tones from the PBX does not
conform to delays in the Application Delay Table.