/telnyx-voice-conferencing-java

name: telnyx-voice-conferencing-java
description: >-
  Create and manage conference calls, queues, and multi-party sessions. Use when
  building call centers or conferencing applications. This skill provides Java
  SDK examples.
metadata:
  author: telnyx
  product: voice-conferencing
  language: java
  generated_by: telnyx-openapi-pipeline

<!-- Auto-generated from Telnyx OpenAPI specs. Do not edit. -->

Telnyx Voice Conferencing - Java

Installation

<!-- Maven -->
<dependency>
    <groupId>com.telnyx.sdk</groupId>
    <artifactId>telnyx</artifactId>
    <version>6.84.0</version>
</dependency>

// Gradle
implementation("com.telnyx.sdk:telnyx:6.84.0")

Setup

import com.telnyx.sdk.client.TelnyxClient;
import com.telnyx.sdk.client.okhttp.TelnyxOkHttpClient;

TelnyxClient client = TelnyxOkHttpClient.fromEnv();

All examples below assume `client` is already initialized as shown above.

Error Handling

All API calls can fail with network errors, rate limits (429), validation errors (422), or authentication errors (401). Always handle errors in production code:

import com.telnyx.sdk.errors.TelnyxServiceException;

try {
    var result = client.messages().send(params);
} catch (TelnyxServiceException e) {
    System.err.println("API error " + e.statusCode() + ": " + e.getMessage());
    if (e.statusCode() == 422) {
        System.err.println("Validation error — check required fields and formats");
    } else if (e.statusCode() == 429) {
        // Rate limited — wait and retry with exponential backoff
        Thread.sleep(1000);
    }
}

Common error codes: `401` invalid API key, `403` insufficient permissions, `404` resource not found, `422` validation error (check field formats), `429` rate limited (retry with exponential backoff).

Important Notes

• **Pagination:** List methods return a page. Use `.autoPager()` for automatic iteration: `for (var item : page.autoPager()) { ... }`. For manual control, use `.hasNextPage()` and `.nextPage()`.

Enqueue call

Put the call in a queue.

`POST /calls/{call_control_id}/actions/enqueue` — Required: `queue_name`

Optional: `client_state` (string), `command_id` (string), `keep_after_hangup` (boolean), `max_size` (integer), `max_wait_time_secs` (integer)

import com.telnyx.sdk.models.calls.actions.ActionEnqueueParams;
import com.telnyx.sdk.models.calls.actions.ActionEnqueueResponse;

ActionEnqueueParams params = ActionEnqueueParams.builder()
    .callControlId("v3:550e8400-e29b-41d4-a716-446655440000_gRU1OGRkYQ")
    .queueName("support")
    .build();
ActionEnqueueResponse response = client.calls().actions().enqueue(params);

Returns: `result` (string)

Remove call from a queue

Removes the call from a queue.

`POST /calls/{call_control_id}/actions/leave_queue`

Optional: `client_state` (string), `command_id` (string)

import com.telnyx.sdk.models.calls.actions.ActionLeaveQueueParams;
import com.telnyx.sdk.models.calls.actions.ActionLeaveQueueResponse;

ActionLeaveQueueResponse response = client.calls().actions().leaveQueue("v3:550e8400-e29b-41d4-a716-446655440000_gRU1OGRkYQ");

Returns: `result` (string)

List conferences

Lists conferences. Conferences are created on demand, and will expire after all participants have left the conference or after 4 hours regardless of the number of active participants. Conferences are listed in descending order by `expires_at`.

`GET /conferences`

import com.telnyx.sdk.models.conferences.ConferenceListPage;
import com.telnyx.sdk.models.conferences.ConferenceListParams;

ConferenceListPage page = client.conferences().list();

Returns: `connection_id` (string), `created_at` (string), `end_reason` (enum: all_left, ended_via_api, host_left, time_exceeded), `ended_by` (object), `expires_at` (string), `id` (string), `name` (string), `record_type` (enum: conference), `region` (string), `status` (enum: init, in_progress, completed), `updated_at` (string)

Create conference

Create a conference from an existing call leg using a `call_control_id` and a conference name. Upon creating the conference, the call will be automatically bridged to the conference. Conferences will expire after all participants have left the conference or after 4 hours regardless of the number of active participants.

`POST /conferences` — Required: `call_control_id`, `name`

Optional: `beep_enabled` (enum: always, never, on_enter, on_exit), `client_state` (string), `comfort_noise` (boolean), `command_id` (string), `duration_minutes` (integer), `hold_audio_url` (string), `hold_media_name` (string), `max_participants` (integer), `region` (enum: Australia, Europe, Middle East, US), `start_conference_on_create` (boolean)

import com.telnyx.sdk.models.conferences.ConferenceCreateParams;
import com.telnyx.sdk.models.conferences.ConferenceCreateResponse;

ConferenceCreateParams params = ConferenceCreateParams.builder()
    .callControlId("v3:MdI91X4lWFEs7IgbBEOT9M4AigoY08M0WWZFISt1Yw2axZ_IiE4pqg")
    .name("Business")
    .build();
ConferenceCreateResponse conference = client.conferences().create(params);

Returns: `connection_id` (string), `created_at` (string), `end_reason` (enum: all_left, ended_via_api, host_left, time_exceeded), `ended_by` (object), `expires_at` (string), `id` (string), `name` (string), `record_type` (enum: conference), `region` (string), `status` (enum: init, in_progress, completed), `updated_at` (string)

List conference participants

Lists conference participants

`GET /conferences/{conference_id}/participants`

import com.telnyx.sdk.models.conferences.ConferenceListParticipantsPage;
import com.telnyx.sdk.models.conferences.ConferenceListParticipantsParams;

ConferenceListParticipantsPage page = client.conferences().listParticipants("550e8400-e29b-41d4-a716-446655440000");

Returns: `call_control_id` (string), `call_leg_id` (string), `conference` (object), `created_at` (string), `end_conference_on_ex