# Enable eCall service

Source: [https://docs.qualcomm.com/doc/80-41102-1/topic/enable-ecall-service.html](https://docs.qualcomm.com/doc/80-41102-1/topic/enable-ecall-service.html)

To enable the eCall service, run either of the following commands to compile the TelAF
            simulation image under the TelAF root directory.

    # In Dev PC Host
    make simulac TELAF_SIMULATION_ENABLE_ECALL =yCopy to clipboard

    # In Dev Container
    cat >> simulation/.simulation.build << EOF
    export TELAF_SIMULATION_ENABLE_ECALL = y
    EOF
    
    echo "make simula-c" > simulation/workstation/.simula.dev.action.sh
    make simula-xCopy to clipboard

MQTT command YAML files can be used to inject eCall failures, PSAP events, and redial
            behavior during a running simulation. No MPSS restart is required for runtime
            injections.

The YAML command files are located at
                telaf-simulation/sml/tools/mqttcli/commands/.

**Run an eCall command file:**

    sml mqttcli pub sml/tools/mqttcli/commands/<yaml-file>.yamlCopy to clipboard

**Monitor eCall indications:**

    sml mqttcli sub 'mp/ind/ecall/#'Copy to clipboard

**Available eCall YAML files:**

Table : Available eCall YAML files

| YAML file | Description |
| --- | --- |
| `configure_ecall_redial_callorig_short.yaml` | Configures short call-origination redial intervals. |
| `force_ecall_redial_callorig_exhaust.yaml` | Forces call-origination redial attempts to fail until<br>                            exhausted. |
| `force_ecall_redial_callorig_succeed_at_2.yaml` | Forces the initial eCall dial and first redial retry to fail. The<br>                            second redial retry succeeds. |
| `force_ecall_redial_restore.yaml` | Restores normal eCall behavior and clears redial overrides. |

**More supported eCall MQTT actions:**

There are no predefined YAML files. Create custom command files under the same
            directory.

Table : More supported eCall MQTT actions

| Action | MQTT action topic | Required fields |
| --- | --- | --- |
| Force HLAP timer failure | `ctrl/cmd/action/ecall/force_ecall_timer_failure` | `timer` (`T5`, `T6`, or<br>                                `T7`) |
| Force MSD pull request | `ctrl/cmd/action/ecall/force_msd_pull_request` | `phoneId` |
| Force PSAP hangup | `ctrl/cmd/action/ecall/force_hangup_from_psap` | `phoneId` |

**Parent Topic:** [Features supported by simulation](https://docs.qualcomm.com/doc/80-41102-1/topic/features-supported-by-simulation.html)

Last Published: Oct 28, 2026

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