---
title: "Modem Monitor"
method: GET
path: "/assets/{asset_id}/alpon/modem"
tags: ["ALPON"]
---

# Modem Monitor

`GET /assets/{asset_id}/alpon/modem`

Retrieve the last known modem monitoring data for a device.

**Possible Error Codes:**
- **AssetNotFound:** The asset with the specified ID was not found.
- **AssetNotAlponDevice:** The device is not an ALPON device.
- **NoModemMonitorData:** No modem monitor data found for the device.

## Path parameters

- `asset_id` string, required — Serial Number, UUID, SIM SID or SIM ICCID

## Response `200`

Successful Response

- ModemMonitorDataModel
  - `timestamp` string, required — Timestamp of the modem monitor data.
  - `signal_quality` string, required — Sigsnal quality of the modem.
  - `connection_tech` string — Connection technology used by the modem.
  - `carrier` string — Carrier name of the SIM card.
  - `sim_iccid` string, required — ICCID of the SIM card in the modem.
  - `sim_slot` string — SIM slot identifier if applicable.
  - `esim_info` boolean — eSIM information if available.

## Other responses

- `400` — Device is not an ALPON device
- `404` — No modem monitor data found
- `422` — Validation Error

---

[API](https://skmtc.net/sixfab/apis/sixfab-developer-api.md) · [All operations](https://skmtc.net/sixfab/apis/sixfab-developer-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/sixfab/sixfab-developer-api/versions/24ad88fd2124/schema)