The ARS Call Progress Tone Detection form specifies which call progress tones should be detected during call set-up and the action to take in response to each tone. A maximum of 100 call progress tone detection plans can be programmed.
Dial tone is detected by an algorithm that monitors the frequency and energy characteristics of the incoming signal. Dial tone is detected when any large signal is present for sufficient time. The algorithm relies on the assumption that no other tone is expected at that time. This technique can detect dial tones that are not listed in the table of detectable tones, noise-based dial tones, and tones that have corrupted frequency characteristics. Frequency detection of dial tone is faster than the energy detection technique.
Use this form to perform the following tasks:
For more information about ARS:
For more information about frequency and cadencing:
To ensure dial tone is received before outpulsing begins, use an ARS Call Progress Tone Detection Plan for loop start calls. The ARS Call Progress Tone Detection form is referred to by the ARS Digit Modification Plans form.
Parameter |
Description |
Default Value |
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Tone Plan Number |
Enter a number to identify the ARS Call Progress Tone Detection plan. Can be between 0 and 99. |
Blank |
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Maximum Wait For A Tone |
Enter a number to indicate the duration (in seconds) that the system will wait for a tone before taking the action indicated in the "Action on time-out" entry. Can be between 0 and 99. |
Blank |
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Action on Time-out |
Select the action to take if the Maximum Wait for a Tone expires.
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Blank |
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Tones to Detect |
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Member Number |
System-generated, protected field. Identifies the member. |
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Tone To Detect |
Select a detectable tone (see table below). For accurate results, enter only one tone for each Tone Plan Number. |
Speech |
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Action To Take |
Select the action to take if the specified tone is detected.
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Blank |
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Tone to Detect |
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Speech |
UK Busy Tone |
CH Continuous Dial Tone |
NA Dial Tone mod 120 |
UK NU Tone |
CH Busy Tone |
NA Dial Tone mod 133 |
UK Audible Ringback |
CH Congestion Tone |
NA Precise Dial Tone |
UK Precise Audible Ringback |
CH Vacant Number Tone |
NA Specialized Carrier Dial Tone |
UK Precise Dial Tone |
NL Dial Tone |
NA Reorder Tone |
NZ Dial Tone |
ES Dial Tone |
NA Busy Tone |
NZ Ringback |
PT Dial Tone |
NA Audible Ringback |
NZ Busy Tone |
LA Dial Tone |
NA Precise Audible Ringback |
NZ Number Unobtainable |
BR Dial Tone |
NA Priority Ring Back |
MA Dial Tone |
FR Dial Tone |
UK 50Hz Dial Tone |
IT Dial Tone |
AU Dial Tone |
UK Congestion Tone |
GE Dial Tone |
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