api/java/telnyx-voice-java/SKILL.md
Make and receive calls, transfer, bridge, and manage call lifecycle with Call Control. Includes application management and call events. This skill provides Java SDK examples.
npx skillsauth add team-telnyx/telnyx-toolkit telnyx-voice-javaInstall this skill globally with one command. Works with Claude Code, Cursor, and Windsurf.
3 of 9 scanners reported clean
Some scanners were skipped, did not run, or reported a non-clean status. Review each row below.
// See https://github.com/team-telnyx/telnyx-java for Maven/Gradle 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.
Answer an incoming call.
POST /calls/{call_control_id}/actions/answer
import com.telnyx.sdk.models.calls.actions.ActionAnswerParams;
import com.telnyx.sdk.models.calls.actions.ActionAnswerResponse;
ActionAnswerResponse response = client.calls().actions().answer("call_control_id");
Bridge two call control calls.
POST /calls/{call_control_id}/actions/bridge — Required: call_control_id
import com.telnyx.sdk.models.calls.actions.ActionBridgeParams;
import com.telnyx.sdk.models.calls.actions.ActionBridgeResponse;
ActionBridgeParams params = ActionBridgeParams.builder()
.callControlIdToBridge("call_control_id")
.callControlId("v3:MdI91X4lWFEs7IgbBEOT9M4AigoY08M0WWZFISt1Yw2axZ_IiE4pqg")
.build();
ActionBridgeResponse response = client.calls().actions().bridge(params);
Dial a number or SIP URI from a given connection.
POST /calls — Required: connection_id, to, from
import com.telnyx.sdk.models.calls.CallDialParams;
import com.telnyx.sdk.models.calls.CallDialResponse;
CallDialParams params = CallDialParams.builder()
.connectionId("7267xxxxxxxxxxxxxx")
.from("+18005550101")
.to("+18005550100")
.build();
CallDialResponse response = client.calls().dial(params);
Hang up the call.
POST /calls/{call_control_id}/actions/hangup
import com.telnyx.sdk.models.calls.actions.ActionHangupParams;
import com.telnyx.sdk.models.calls.actions.ActionHangupResponse;
ActionHangupResponse response = client.calls().actions().hangup("call_control_id");
Transfer a call to a new destination.
POST /calls/{call_control_id}/actions/transfer — Required: to
import com.telnyx.sdk.models.calls.actions.ActionTransferParams;
import com.telnyx.sdk.models.calls.actions.ActionTransferResponse;
ActionTransferParams params = ActionTransferParams.builder()
.callControlId("call_control_id")
.to("+18005550100")
.build();
ActionTransferResponse response = client.calls().actions().transfer(params);
Lists all active calls for given connection.
GET /connections/{connection_id}/active_calls
import com.telnyx.sdk.models.connections.ConnectionListActiveCallsPage;
import com.telnyx.sdk.models.connections.ConnectionListActiveCallsParams;
ConnectionListActiveCallsPage page = client.connections().listActiveCalls("1293384261075731461");
Return a list of call control applications.
GET /call_control_applications
import com.telnyx.sdk.models.callcontrolapplications.CallControlApplicationListPage;
import com.telnyx.sdk.models.callcontrolapplications.CallControlApplicationListParams;
CallControlApplicationListPage page = client.callControlApplications().list();
Create a call control application.
POST /call_control_applications — Required: application_name, webhook_event_url
import com.telnyx.sdk.models.callcontrolapplications.CallControlApplicationCreateParams;
import com.telnyx.sdk.models.callcontrolapplications.CallControlApplicationCreateResponse;
CallControlApplicationCreateParams params = CallControlApplicationCreateParams.builder()
.applicationName("call-router")
.webhookEventUrl("https://example.com")
.build();
CallControlApplicationCreateResponse callControlApplication = client.callControlApplications().create(params);
Retrieves the details of an existing call control application.
GET /call_control_applications/{id}
import com.telnyx.sdk.models.callcontrolapplications.CallControlApplicationRetrieveParams;
import com.telnyx.sdk.models.callcontrolapplications.CallControlApplicationRetrieveResponse;
CallControlApplicationRetrieveResponse callControlApplication = client.callControlApplications().retrieve("id");
Updates settings of an existing call control application.
PATCH /call_control_applications/{id} — Required: application_name, webhook_event_url
import com.telnyx.sdk.models.callcontrolapplications.CallControlApplicationUpdateParams;
import com.telnyx.sdk.models.callcontrolapplications.CallControlApplicationUpdateResponse;
CallControlApplicationUpdateParams params = CallControlApplicationUpdateParams.builder()
.id("id")
.applicationName("call-router")
.webhookEventUrl("https://example.com")
.build();
CallControlApplicationUpdateResponse callControlApplication = client.callControlApplications().update(params);
Deletes a call control application.
DELETE /call_control_applications/{id}
import com.telnyx.sdk.models.callcontrolapplications.CallControlApplicationDeleteParams;
import com.telnyx.sdk.models.callcontrolapplications.CallControlApplicationDeleteResponse;
CallControlApplicationDeleteResponse callControlApplication = client.callControlApplications().delete("id");
Filters call events by given filter parameters.
GET /call_events
import com.telnyx.sdk.models.callevents.CallEventListPage;
import com.telnyx.sdk.models.callevents.CallEventListParams;
CallEventListPage page = client.callEvents().list();
The following webhook events are sent to your configured webhook URL.
All webhooks include telnyx-timestamp and telnyx-signature-ed25519 headers for verification (Standard Webhooks compatible).
| Event | Description |
|-------|-------------|
| callAnswered | Call Answered |
| callStreamingStarted | Call Streaming Started |
| callStreamingStopped | Call Streaming Stopped |
| callStreamingFailed | Call Streaming Failed |
| callBridged | Call Bridged |
| callInitiated | Call Initiated |
| callHangup | Call Hangup |
| callRecordingSaved | Call Recording Saved |
| callMachineDetectionEnded | Call Machine Detection Ended |
| callMachineGreetingEnded | Call Machine Greeting Ended |
| callMachinePremiumDetectionEnded | Call Machine Premium Detection Ended |
| callMachinePremiumGreetingEnded | Call Machine Premium Greeting Ended |
tools
Build cross-platform VoIP calling apps with React Native using Telnyx Voice SDK. High-level reactive API with automatic lifecycle management, CallKit/ConnectionService integration, and push notifications. Use for mobile VoIP apps with minimal setup.
tools
Build browser-based VoIP calling apps using Telnyx WebRTC JavaScript SDK. Covers authentication, voice calls, events, debugging, call quality metrics, and AI Agent integration. Use for web-based real-time communication.
tools
Build VoIP calling apps on iOS using Telnyx WebRTC SDK. Covers authentication, making/receiving calls, CallKit integration, PushKit/APNS push notifications, call quality metrics, and AI Agent integration. Use when implementing real-time voice communication on iOS.
tools
Build cross-platform VoIP calling apps with Flutter using Telnyx WebRTC SDK. Covers authentication, making/receiving calls, push notifications (FCM + APNS), call quality metrics, and AI Agent integration. Works on Android, iOS, and Web.