CEL Command — Cellular Connection Status
Query real-time cellular connection status.
What is it for?
📶 Main use cases:
- 📊 Monitor network connection quality
- 🔍 Diagnose connectivity issues
- 📡 Identify active technology (2G, 3G, LTE, NB-IoT)
- 🌍 Verify connected operator (MCC/MNC)
- 🔧 Communications debugging
Commands
| Operation | Syntax | Response |
|---|---|---|
| Query | QCEL | RCEL,status,tech,mcc,mnc |
Response Fields
| Field | Description | Values |
|---|---|---|
| status | LPWA connection status | See table below |
| tech | Network technology | 2G, GSM, 3G, CAT-M, CAT-NB, eMTC |
| mcc | Mobile Country Code | Country numeric code |
| mnc | Mobile Network Code | Operator numeric code |
Connection States
| State | Description | Icon |
|---|---|---|
| NOCONN | Not connected to LPWA - IDLE | 🔴 |
| CONNECT | Connected to LPWA | 🟢 |
| SEARCH | Searching LPWA network | 🟡 |
| LIMSRV | Limited service | 🟠 |
Network Technologies
| Value | Technology | Typical speed |
|---|---|---|
2G / GSM | Second generation | Low |
3G | UMTS/HSPA | Medium |
CAT-M / eMTC | LTE Cat-M1 | High (IoT) |
CAT-NB | LTE NB-IoT | Low power |
Examples
Connected to 2G Movistar Argentina
>QCEL<
>RCEL,NOCONN,GSM,722,7< // GSM, MCC=722 (Argentina), MNC=7 (Movistar)Connected to CAT-M1 Claro Argentina
>QCEL<
>RCEL,CONNECT,CAT-M,722,310< // LTE Cat-M, MCC=722, MNC=310 (Claro)Connected to NB-IoT
>QCEL<
>RCEL,CONNECT,CAT-NB,722,310< // NB-IoT for low consumptionArgentina MCC/MNC Codes
| Operator | MCC | MNC |
|---|---|---|
| 📱 Movistar | 722 | 7, 70 |
| 📱 Claro | 722 | 310, 320, 330 |
| 📱 Personal | 722 | 34, 341 |
Check the complete MCC/MNC codes list for other countries.
Compatibility
💾Firmware:v1.00.00
SP-IOT
SM-IOT
ZE-IOT
Last updated