rapids/docs/features/phone-calls.md

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# Phone Calls
Sensor parameters description for `[PHONE_CALLS]`:
|Key                              | Description |
|----------------|-----------------------------------------------------------------------------------------------------------------------------------
|`[TABLE]`| Database table where the calls data is stored
## RAPIDS Provider
!!! info "Available time segments and platforms"
- Available for all time segments
- Available for Android and iOS
!!! info "File Sequence"
```bash
- data/raw/{pid}/phone_calls_raw.csv
- data/raw/{pid}/phone_calls_with_datetime.csv
- data/interim/{pid}/phone_calls_features/phone_calls_{language}_{provider_key}.csv
- data/processed/features/{pid}/phone_calls.csv
```
Parameters description for `[PHONE_CALLS][PROVIDERS][RAPIDS]`:
| Key                        | Description |
|-------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
|`[COMPUTE]`| Set to `True` to extract `PHONE_CALLS` features from the `RAPIDS` provider|
| `[CALL_TYPES]` | The particular call_type that will be analyzed. The options for this parameter are incoming, outgoing or missed. |
| `[FEATURES]` | Features to be computed for `outgoing`, `incoming`, and `missed` calls. Note that the same features are available for both incoming and outgoing calls, while missed calls has its own set of features. See the tables below. |
Features description for `[PHONE_CALLS][PROVIDERS][RAPIDS]` incoming and outgoing calls:
|Feature |Units |Description|
|-------------------------- |---------- |---------------------------|
|count |calls |Number of calls of a particular `call_type` occurred during a particular `time_segment`.
|distinctcontacts |contacts |Number of distinct contacts that are associated with a particular `call_type` for a particular `time_segment`
|meanduration |seconds |The mean duration of all calls of a particular `call_type` during a particular `time_segment`.
|sumduration |seconds |The sum of the duration of all calls of a particular `call_type` during a particular `time_segment`.
|minduration |seconds |The duration of the shortest call of a particular `call_type` during a particular `time_segment`.
|maxduration |seconds |The duration of the longest call of a particular `call_type` during a particular `time_segment`.
|stdduration |seconds |The standard deviation of the duration of all the calls of a particular `call_type` during a particular `time_segment`.
|modeduration |seconds |The mode of the duration of all the calls of a particular `call_type` during a particular `time_segment`.
|entropyduration |nats |The estimate of the Shannon entropy for the the duration of all the calls of a particular `call_type` during a particular `time_segment`.
|timefirstcall |minutes |The time in minutes between 12:00am (midnight) and the first call of `call_type`.
|timelastcall |minutes |The time in minutes between 12:00am (midnight) and the last call of `call_type`.
|countmostfrequentcontact |calls |The number of calls of a particular `call_type` during a particular `time_segment` of the most frequent contact throughout the monitored period.
Features description for `[PHONE_CALLS][PROVIDERS][RAPIDS]` missed calls:
|Feature |Units |Description|
|-------------------------- |---------- |---------------------------|
|count |calls |Number of `missed` calls that occurred during a particular `time_segment`.
|distinctcontacts |contacts |Number of distinct contacts that are associated with `missed` calls for a particular `time_segment`
|timefirstcall |minutes |The time in hours from 12:00am (Midnight) that the first `missed` call occurred.
|timelastcall |minutes |The time in hours from 12:00am (Midnight) that the last `missed` call occurred.
|countmostfrequentcontact |calls |The number of `missed` calls during a particular `time_segment` of the most frequent contact throughout the monitored period.
!!! note "Assumptions/Observations"
1. Traces for iOS calls are unique even for the same contact calling a participant more than once which renders `countmostfrequentcontact` meaningless and `distinctcontacts` equal to the total number of traces.
2. `[CALL_TYPES]` and `[FEATURES]` keys in `config.yaml` need to match. For example, `[CALL_TYPES]` `outgoing` matches the `[FEATURES]` key `outgoing`
3. iOS calls data is transformed to match Android calls data format. See our [algorithm](algorithms/phone-algorithms.md#phone-calls)