Default Template For Call Progress Tones - 3Com V7111 - VCX 4 Channels Analog FXO Media Gateway User Manual

Second Signal Off Time [10 msec] – Signal Off period (in 10 ms units) for the
second cadence on-off cycle.
Using this configuration file, you can create up to 16 different call progress tones using up to
15 different frequencies (in the range from 300 Hz through 2000 Hz). Each one of the call
progress tones is specified by the following two parameters: the tone frequency (either single
or dual frequencies are supported) and the tone cadence. This is specified by two sets of
ON/OFF periods, but you can discard the use of the first On/Off cycle by setting the relevant
parameters to zero. When the tone is made up of a single frequency, the second frequency
field should be set to zero.
For a continuous tone (such as dial tone), only the First Signal On time should be specified.
In this case, the parameter specifies the detection period. For example if it equals 300, then
the tone is detected after 3 seconds (300 x 10 ms).
When defining several continuous tones, the First Signal On Time parameter
should have the same value for all tones.
The tones frequency should differ by at least 40 Hz from one tone to other defined
tones.

Default Template for Call Progress Tones

The VCX V7111 is initialized with the default Call Progress Tones configuration template
shown in Table 20. If you need to change one of the tones, edit the default call progress.txt
file.
For example: to change the dial tone to 440 Hz only, replace the #Dial tone section in
Table 20 with the following text:
#Dial tone
[CALL PROGRESS TONE #1]
Tone Type=1
Low Freq [Hz]=440
High Freq [Hz]=0
Low Freq Level [-dBm]=10 (-10 dBm)
High Freq Level [-dBm]=32 (use 32 only if a single tone is required)
First Signal On Time [10msec]=300; the dial tone is detected after 3 sec
First Signal Off Time [10msec]=0
Second Signal On Time [10msec]=0
Second Signal Off Time [10msec]=0
You can specify several tones of the same type using Tone Type definition. These additional
tones are used only for tone detection. Generation of specific tone is according to the first
definition of the specific tone. For example, you can define an additional dial tone by
appending the second dial tone definition lines to the tone INI file. The VCX V7111 reports
dial tone detection if either one of the two tones has been detected.
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