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telnyx-voice-advanced-java

Advanced call control features including DTMF sending, SIPREC recording, noise suppression, client state, and supervisor controls. This skill provides Java SDK examples.

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team-telnyx/telnyx-toolkit
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February 10, 2026 at 20:41
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name
telnyx-voice-advanced-java
description
Advanced call control features including DTMF sending, SIPREC recording, noise suppression, client state, and supervisor controls. This skill provides Java SDK examples.
metadata
{"author":"telnyx","product":"voice-advanced","language":"java","generated_by":"telnyx-ext-skills-generator"}
<!-- Auto-generated from Telnyx OpenAPI specs. Do not edit. --> # Telnyx Voice Advanced - Java ## Installation ```text // See https://github.com/team-telnyx/telnyx-java for Maven/Gradle setup ``` ## Setup ```java 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. ## Update client state Updates client state `PUT /calls/{call_control_id}/actions/client_state_update` — Required: `client_state` ```java import com.telnyx.sdk.models.calls.actions.ActionUpdateClientStateParams; import com.telnyx.sdk.models.calls.actions.ActionUpdateClientStateResponse; ActionUpdateClientStateParams params = ActionUpdateClientStateParams.builder() .callControlId("call_control_id") .clientState("aGF2ZSBhIG5pY2UgZGF5ID1d") .build(); ActionUpdateClientStateResponse response = client.calls().actions().updateClientState(params); ``` ## SIP Refer a call Initiate a SIP Refer on a Call Control call. `POST /calls/{call_control_id}/actions/refer` — Required: `sip_address` ```java import com.telnyx.sdk.models.calls.actions.ActionReferParams; import com.telnyx.sdk.models.calls.actions.ActionReferResponse; ActionReferParams params = ActionReferParams.builder() .callControlId("call_control_id") .sipAddress("sip:username@sip.non-telnyx-address.com") .build(); ActionReferResponse response = client.calls().actions().refer(params); ``` ## Send DTMF Sends DTMF tones from this leg. `POST /calls/{call_control_id}/actions/send_dtmf` — Required: `digits` ```java import com.telnyx.sdk.models.calls.actions.ActionSendDtmfParams; import com.telnyx.sdk.models.calls.actions.ActionSendDtmfResponse; ActionSendDtmfParams params = ActionSendDtmfParams.builder() .callControlId("call_control_id") .digits("1www2WABCDw9") .build(); ActionSendDtmfResponse response = client.calls().actions().sendDtmf(params); ``` ## SIPREC start Start siprec session to configured in SIPREC connector SRS. `POST /calls/{call_control_id}/actions/siprec_start` ```java import com.telnyx.sdk.models.calls.actions.ActionStartSiprecParams; import com.telnyx.sdk.models.calls.actions.ActionStartSiprecResponse; ActionStartSiprecResponse response = client.calls().actions().startSiprec("call_control_id"); ``` ## SIPREC stop Stop SIPREC session. `POST /calls/{call_control_id}/actions/siprec_stop` ```java import com.telnyx.sdk.models.calls.actions.ActionStopSiprecParams; import com.telnyx.sdk.models.calls.actions.ActionStopSiprecResponse; ActionStopSiprecResponse response = client.calls().actions().stopSiprec("call_control_id"); ``` ## Noise Suppression Start (BETA) `POST /calls/{call_control_id}/actions/suppression_start` ```java import com.telnyx.sdk.models.calls.actions.ActionStartNoiseSuppressionParams; import com.telnyx.sdk.models.calls.actions.ActionStartNoiseSuppressionResponse; ActionStartNoiseSuppressionResponse response = client.calls().actions().startNoiseSuppression("call_control_id"); ``` ## Noise Suppression Stop (BETA) `POST /calls/{call_control_id}/actions/suppression_stop` ```java import com.telnyx.sdk.models.calls.actions.ActionStopNoiseSuppressionParams; import com.telnyx.sdk.models.calls.actions.ActionStopNoiseSuppressionResponse; ActionStopNoiseSuppressionResponse response = client.calls().actions().stopNoiseSuppression("call_control_id"); ``` ## Switch supervisor role Switch the supervisor role for a bridged call. `POST /calls/{call_control_id}/actions/switch_supervisor_role` — Required: `role` ```java import com.telnyx.sdk.models.calls.actions.ActionSwitchSupervisorRoleParams; import com.telnyx.sdk.models.calls.actions.ActionSwitchSupervisorRoleResponse; ActionSwitchSupervisorRoleParams params = ActionSwitchSupervisorRoleParams.builder() .callControlId("call_control_id") .role(ActionSwitchSupervisorRoleParams.Role.BARGE) .build(); ActionSwitchSupervisorRoleResponse response = client.calls().actions().switchSupervisorRole(params); ``` --- ## Webhooks 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 | |-------|-------------| | `callReferStarted` | Call Refer Started | | `callReferCompleted` | Call Refer Completed | | `callReferFailed` | Call Refer Failed | | `callSiprecStarted` | Call Siprec Started | | `callSiprecStopped` | Call Siprec Stopped | | `callSiprecFailed` | Call Siprec Failed |
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