---
title: "Trigger C-ECHO SCU"
method: POST
path: "/modalities/{id}/echo"
tags: ["Networking"]
---

# Trigger C-ECHO SCU

`POST /modalities/{id}/echo`

Trigger C-ECHO SCU command against the DICOM modality whose identifier is provided in URL: https://orthanc.uclouvain.be/book/users/rest.html#performing-c-echo

## Path parameters

- `id` string, required

## Request body

- object
  - `CheckFind` boolean — Issue a dummy C-FIND command after the C-GET SCU, in order to check whether the remote modality knows about Orthanc. This field defaults to the value of the `DicomEchoChecksFind` configuration option. New in Orthanc 1.8.1.
  - `Timeout` number — DICOM SCU Timeout for this C-ECHO command, in seconds. Orthanc will close the DICOM association if no C-ECHO answer is received within this time period.

## Response `200`

---

[API](https://skmtc.net/uclouvain/apis/orthanc-api.md) · [All operations](https://skmtc.net/uclouvain/apis/orthanc-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/uclouvain/orthanc-api/revisions/dbfb49bf0bc7/schema)