GVP MCP:mpc:cpa-ringback

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Published Option

cpa.ringback

Default Value: na_ringback
Valid Values: Any combination of: "na_ringback", "na_busy", "na_fastbusy", "na_sit_nocircuit", "na_sit_vacantcircuit", "na_sit_operatorintercept", "na_sit_reorder", "standard_fax", "tone1", "tone2", "tone3", "tone4", "tone5", "tone6", "tone7", "tone8", "tone9" and "tone10". Or "none".
Changes Take Effect: At start/restart

Each of the result pattern types ringback, busy, fax, sit nocircuit, sit reorder, sit operatorintercept, sit vacantcircuit, custom1, custom2, custom3, and custom4, has a configuration parameter that sets the list of one or more tone definition names that are mapped to the type. Some pattern types have default tone settings. Specifying "Disable" for a pattern type will disable detection of the type.

The list of tone definition names consist of a set of builtin standard tones and a number of configured custom tones. The builtin tones include NA ringback (North American ringback), NA busy, NA fast busy, Standard fax, NA SIT no circuit, NA SIT vacant circuit, NA SIT operator intercept, NA SIT reorder. Configuration for up to 10 custom tones, named Custom tone 1 through Custom tone 10, each containing one to three segments is supported.

The configuration for each segment includes frequency range for one or two frequencies, on time range, off time range. Specifying zero to min and max for f1 and f2 implicitly disables the segment. Specifying f2 values implicitly enables a second frequency for the segment. Specifying segment2 values implicitly enables a second segment for the tone and so on for segment3. Any not set tone parameters will default to null/disabled values.

In this case, cpa.ringback then specifies tones for CPA's ringback type. Default tone value is builtin North American ringback (NA ringback). Value "Disable" disables ringback detection. Valid tones include builtins and Custom tone 1 to Custom tone 10.

The builtin North American ringback is composed of three different ringback tones. Each of them has only one segment and is defined as follows:
NA RINGBACK 1: f1=420-445(Hz), f2=475-500(Hz), ontime=720-1280(ms), offtime=1440-2560(ms)
NA RINGBACK 2: f1=420-445(Hz), f2=475-500(Hz), ontime=720-1280(ms), offtime=2160-3840(ms)
NA RINGBACK 3: f1=420-445(Hz), f2=475-500(Hz), ontime=1440-2560(ms), offtime=2880-5120(ms)

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