---
title: Place Call
description: Place a voice call from a real SIM and measure connection and call quality.
lastUpdated: "2026-09-23"
---

> **For AI agents:** the complete documentation index is at [llms.txt](/llms.txt). Append `.md` to any page URL for its markdown version.

Place a voice call from the SIM: to another SIM in the platform for an end-to-end voice test, or to any number. Measure the time to connect, hold the call for a chosen duration, optionally play an audio file and record the call for quality scoring.

## Parameters

| Parameter | Required | Description |
| ----------- | ---------- | ------------- |
| Access technology | No | Network technology, including VoLTE profiles. Default: automatic. |
| Call Receiver Number | Yes | The number to call. Supports variables. |
| Max wait time | No | How long to wait for the call to connect. Default: 30. |
| Call duration | No | How long to hold the call once connected. Default: 10. |
| Play file during call | No | Play a reference audio file into the call (used for MOS scoring on the receiving side). |
| Record call | No | Record the call audio. Default: off. |
| Compute Audio MOS | No | Score the recorded audio against a reference file. Requires recording. |
| Call should fail | No | Invert the verdict, for barred numbers. |

## Results and metrics

In the action report (`result`):

| Field | Description |
|-------|-------------|
| `wait_connect_duration_in_seconds` | Time for the call to connect. |
| `post_dial_delay_in_seconds` | Delay between dialing and ringing. |
| `call_duration_in_seconds` | Time the call stayed up. |
| `total_duration_in_seconds` | End-to-end action duration. |
| `ceer_response` | The network's call end report, for diagnosing drops. |
| `access_technology_report` | The technology used for the call. |

In Analytics, each run feeds the call measurement with `cellular_call_duration_seconds`, `cellular_call_connect_duration_seconds`, `cellular_call_post_dial_delay_seconds`, and `duration_seconds`, tagged by status, antenna, and access technology.

## What's next?

<Columns cols={2}>
  <Card title="Wait Call" icon="phone" href="/tests/actions/cellular/wait-call">

    Receive the call on a second SIM and score the audio

</Card>
  <Card title="SIM steps overview" icon="sim-card" href="/tests/actions/cellular/overview">

    Assertions, stored variables, and shared options

</Card>
</Columns>