CID Command — Caller ID Detection

Configures incoming call detection through caller identification (Caller ID).

What is it for?

📞 Main use cases:

🔔 Detect calls from specific numbers as event triggers
🎧 Start audio session in remote listening mode
📞 Establish bidirectional voice communication (full duplex)
🚨 Activate alerts or actions when receiving authorized calls

When starting voice communication, data transmission and reception via GPRS is temporarily inhibited.

Commands

Configure


SCIDabcc..cc

Query


QCIDa

Response


RCIDabcc..cc

Parameters

Parameter	Description	Values
a	Phone number index	0-9 (10 numbers)
b	Operation mode	See table
cc..cc	Phone number	Number or `%` (any number)

Operation Modes

Value	Mode	Description
0	Detection	Only generates CIDxx trigger (no audio)
1	Listen	Starts audio session listen only
2	Full Duplex	Starts bidirectional audio session

Associated Signals

Property	Value
Signal	`CID`
Index	00-09
Conditional use	NO
Edges	`+` positive edge only

Example

Call detection with rule


// Configure index 2, detection mode (0), number 999999999
>SCID209999999999<
 
// Rule that sends message upon detection
>SRL55E;TRG=CID02+;ACC=(STX CID 2 DETECTED ;@TRM)<

Rule 55 sends the message “CID 2 DETECTED” to the terminal port every time the call is detected.

Usage in rules

Action	Command
Trigger on call detection	`TRG=CIDxx+`
Conditional (if active)	`CND=CIDxx`

Compatibility

💾Firmware v1.03.00

SPLegacy

ULLegacy

MTLegacy

💾Firmware v1.00.00

SP-IOT

SM-IOT