Telephony (lamp.telephony)

Records call metadata (not content). Call traces are hashed identifiers — the same contact produces a consistent trace, enabling degree analysis without exposing the actual phone number.

Configuration

• SensorSpec: lamp.telephony
• Sampling: Continuous (one event per call)
• Platform: iOS, Android

Usage

Call events are recorded automatically. No participant action is required. Only metadata is captured — call audio content is never recorded by this sensor.

Data

Fields

Field	Type	Description
type	string	"incoming", "outgoing", or "missed"
duration	number	Call duration in seconds
trace	string	Hashed contact identifier

Example

{
  "timestamp": 1649864919743,
  "sensor": "lamp.telephony",
  "data": {
    "type": "incoming",
    "duration": 24,
    "trace": "22F222FF-F2F2-4000-92F3-293049DC4FEC"
  }
}

Cortex Features

telephony (raw) → call_number, call_duration, call_degree (secondary)

Call features accept a call_direction parameter: "all", "incoming", or "outgoing".

note

Text message features (text_number, text_degree) depend on the messages_usage raw feature from iOS SensorKit — not on lamp.telephony. See Communication features for details.

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