User`s manual

H.323 User's Manual 16. Configuration Files
Version 5.0 371 December 2006
16.1.2.1 Examples of Various Ringing Signals
Figure 16-4: Examples of Various Ringing Signals
#Regular North American Ringing Pattern: 20 Hz, 2 sec On, 4 sec Off
[NUMBER OF DISTINCTIVE RINGING PATTERNS]
Number of Ringing Patterns=1
[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 3: 20 Hz ringing comprised of three cadences
[NUMBER OF DISTINCTIVE RINGING PATTERNS]
Number of Ringing Patterns=1
[Ringing Pattern #0]
Ring Type=0
Freq [Hz]=20
First Ring On Time [10msec]=40
First Ring Off Time [10msec]=20
Second Ring On Time [10msec]=40
Second Ring Off Time [10msec]=20
Third Ring On Time [10msec]=80
Third Ring Off Time [10msec]=400
#EN 300 001 Ring – Finland: informative ringing nr. 3: three ringing bursts
followed by repeated ringing of 1 sec on and 3 sec off.
[NUMBER OF DISTINCTIVE RINGING PATTERNS]
Number of Ringing Patterns=1
[Ringing Pattern #0]
Ring Type=0
Freq [Hz]=25
First Burst Ring On Time [10msec]=30
First Burst Ring Off Time [10msec]=30
Second Burst Ring On Time [10msec]=30
Second Burst Ring Off Time [10msec]=30
Third Burst Ring On Time [10msec]=30
Third Burst Ring Off Time [10msec]=30
Fourth Ring On Time [10msec]=100
Fourth Ring Off Time [10msec]=400
16.2 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.