Prerecorded Tones (Prt) File; Prt File Format - 3Com VCX v7111 User Manual

Fourth (Burst) Ring Off Time [10 msec]: Ring Off period (in 10 msec units) for the
fourth cadence on-off cycle.
Examples of Various Ringing Signals
Figure 143 Examples of Various Ringing Signals
[NUMBER OF DISTINCTIVE RINGING PATTERNS]
Number of Ringing Patterns=3
#Regular North American Ringing Pattern
[Ringing Pattern #0]
Ring Type=0
Freq [Hz]=20
First Ring On Time [10msec]=200
First Ring Off Time [10msec]=400
#GR-506-CORE Ringing Pattern 1
[Ringing Pattern #1]
Ring Type=1
Freq [Hz]=20
First Ring On Time [10msec]=200
First Ring Off Time [10msec]=400
#GR-506-CORE Ringing Pattern 2
[Ringing Pattern #2]
Ring Type=2
Freq [Hz]=20
First Ring On Time [10msec]=80
First Ring Off Time [10msec]=40
Second Ring On Time [10msec]=80
Second Ring Off Time [10msec]=400

Prerecorded Tones (PRT) File

The Call Progress Tones mechanism has several limitations, such as a limited number of
predefined tones and a limited number of frequency integrations in one tone. To work around
these limitations and provide tone generation capability that is more flexible, the PRT file can
be used. If a specific prerecorded tone exists in the PRT file, it takes precedence over the
same tone that exists in the CPT file and is played instead of it.
Note that the prerecorded tones are used only for generation of tones. Detection of tones is
performed according to the CPT file.

PRT File Format

The PRT dat file contains a set of prerecorded tones to be played by the V7111 gateway
during operation. Up to 40 tones (totaling approximately one minute) can be stored in a
single file in flash memory. The prerecorded tones (raw data PCM or L8 files) are prepared
offline using standard recording utilities (such as CoolEdit
382
TM
) and combined into a single file
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3Com VCX V7111 VoIP Gateway User Guide