java.lang.Object
- com.twilio.voice.Voice

public abstract class Voice
extends java.lang.Object

Nested Class Summary

Nested Classes
Modifier and Type Class Description

static class Voice.RegistrationChannel

Method Summary

All Methods Static Methods Concrete Methods Deprecated Methods
Modifier and Type	Method	Description
`static Call`	`connect(android.content.Context context, ConnectOptions connectOptions, Call.Listener listener)`	Creates and returns a new `Call`.
`static Call`	`connect(android.content.Context context, java.lang.String accessToken, Call.Listener listener)`	Creates and returns a new `Call`.
`static void`	`enableInsights(boolean enable)`	Specify reporting statistics to Insights.
`static AudioDevice`	`getAudioDevice()`	Returns the AudioDevice.
`static java.lang.String`	`getEdge()`	Returns the edge specified by `edge`.
`static LogLevel`	`getLogLevel()`	Returns the logging level for messages logged by the Voice SDK.
`static LogLevel`	`getModuleLogLevel(LogModule module)`	Returns the logging level for messages logged by the specified LogModule.
`static java.lang.String`	`getRegion()`	Deprecated. As of release 5.3.0, use `getEdge()` instead.
`static java.lang.String`	`getVersion()`	Returns the version of the Voice SDK.
`static boolean`	`handleMessage(android.content.Context context, android.os.Bundle data, MessageListener listener)`	Handle messages from GCM.
`static boolean`	`handleMessage(android.content.Context context, java.util.Map<java.lang.String,java.lang.String> data, MessageListener listener)`	Handle messages from FCM.
`static boolean`	`isInsightsEnabled()`	Returns if reporting statistics to Insights is enabled.
`static void`	`register(java.lang.String accessToken, Voice.RegistrationChannel registrationChannel, java.lang.String registrationToken, RegistrationListener listener)`	Register for incoming call messages.
`static void`	`setAudioDevice(AudioDevice audioDevice)`	Sets the custom audio device.
`static void`	`setEdge(java.lang.String edge)`	Sets the edge (Twilio data center) for the SDK.
`static void`	`setLogLevel(LogLevel level)`	Sets the logging level for messages logged by the Voice SDK.
`static void`	`setModuleLogLevel(LogModule module, LogLevel level)`	Sets the logging level for messages logged by a specific module.
`static void`	`setRegion(java.lang.String region)`	Deprecated. As of release 5.3.0, use `setEdge(String)` instead.
`static void`	`unregister(java.lang.String accessToken, Voice.RegistrationChannel registrationChannel, java.lang.String registrationToken, UnregistrationListener listener)`	Unregister from receiving further incoming call messages.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

register

public static void register(@NonNull
                            java.lang.String accessToken,
                            @NonNull
                            Voice.RegistrationChannel registrationChannel,
                            @NonNull
                            java.lang.String registrationToken,
                            @NonNull
                            RegistrationListener listener)

Register for incoming call messages. A successful registration will ensure that push notifications will arrive via the GCM or FCM service for the lifetime of the registration device token provided by the GCM or FCM service instance. When registration is successful, RegistrationListener.onRegistered(...) callback is raised. Once successfully registered, the registered binding has a time-to-live(TTL) of 1 year. If the registered binding is inactive for 1 year, it is deleted and push notifications to the registered identity will not succeed. However, whenever the registered binding is used to reach the registered identity, the TTL is reset to 1 year.

If registration fails, RegistrationListener.onError(...) callback is raised with RegistrationException. RegistrationException.getMessage(...) provides the root cause of the failure.

Registration Exceptions
Registration Exception	Error Code	Description
`VoiceException.EXCEPTION_INVALID_ACCESS_TOKEN`	20101	Twilio was unable to validate your Access Token
`VoiceException.EXCEPTION_INVALID_ACCESS_TOKEN_HEADER`	20102	Invalid Access Token header
`VoiceException.EXCEPTION_INVALID_ISSUER_SUBJECT`	20103	Invalid Access Token issuer or subject
`VoiceException.EXCEPTION_INVALID_ACCESS_TOKEN_EXPIRY`	20104	Access Token has expired or expiration date is invalid
`VoiceException.EXCEPTION_INVALID_ACCESS_TOKEN_NOT_VALID_YET`	20105	Access Token not yet valid
`VoiceException.EXCEPTION_INVALID_ACCESS_TOKEN_GRANT`	20106	Invalid Access Token grants
`VoiceException.EXCEPTION_INVALID_TTL`	20157	Expiration Time in the Access Token Exceeds Maximum Time Allowed
`VoiceException.EXCEPTION_INVALID_TOKEN`	20403	Forbidden. The account lacks permission to access the Twilio API
`VoiceException.EXCEPTION_ACCESS_TOKEN_REJECTED`	51007	Token authentication is rejected by authentication service
`RegistrationException.EXCEPTION_REGISTRATION_ERROR`	31301	Registration failed. Look at RegistrationException.getMessage(...) for details
`VoiceException.EXCEPTION_BAD_REQUEST`	31400	Bad Request. The request could not be understood due to malformed syntax
`VoiceException.EXCEPTION_FORBIDDEN`	31403	Forbidden. The server understood the request, but is refusing to fulfill it
`VoiceException.EXCEPTION_NOT_FOUND`	31404	Not Found. The server has not found anything matching the request
`VoiceException.EXCEPTION_REQUEST_TIMEOUT`	31408	Request Timeout. A request timeout occurred
`RegistrationException.EXCEPTION_CONFLICT`	31409	Conflict. The request could not be processed because of a conflict in the current state of the resource. Another request may be in progress
`RegistrationException.EXCEPTION_UPGRADE_REQUIRED`	31426	Upgrade Required. The client should switch to a different protocol
`RegistrationException.EXCEPTION_TOO_MANY_REQUEST`	31429	Too Many Requests. Too many requests were sent in a given amount of time
`VoiceException.EXCEPTION_INTERNAL_SERVER_ERROR`	31500	Internal Server Error. The server could not fulfill the request due to some unexpected condition
`VoiceException.EXCEPTION_BAD_GATEWAY`	31502	Bad Gateway. The server is acting as a gateway or proxy, and received an invalid response from a downstream server while attempting to fulfill the request
`VoiceException.EXCEPTION_SERVICE_UNAVAILABLE`	31503	Service Unavailable. The server is currently unable to handle the request due to a temporary overloading or maintenance of the server
`VoiceException.EXCEPTION_GATEWAY_TIMEOUT`	31504	Gateway Timeout. The server, while acting as a gateway or proxy, did not receive a timely response from an upstream server

The identity provided in the accessToken may only contain alpha-numeric and underscore characters. Other characters, including spaces, will result in undefined behavior.

Insights :

Insights events
Group Name	Event Name	Description	Since version
registration	registration	Registration is successful	3.0.0-preview4
registration	registration-error	Registration failed	3.0.0-preview4

The maximum number of characters for the identity provided in the token is 121. The identity may only contain alpha-numeric and underscore characters. Other characters, including spaces, or exceeding the maximum number of characters, will result in not being able to place or receive calls.

Parameters:

accessToken - An access token.

registrationChannel - An enumeration of registration channels.

registrationToken - A GCM or FCM registration token.

listener - A listener that receives registration request status.

Usage example:

 final String registrationToken = FirebaseInstanceId.getInstance().getToken();
 if (registrationToken != null) {
     Voice.register(accessToken, Voice.RegistrationChannel.FCM, registrationToken, registrationListener);
 }

unregister

public static void unregister(@NonNull
                              java.lang.String accessToken,
                              @NonNull
                              Voice.RegistrationChannel registrationChannel,
                              @NonNull
                              java.lang.String registrationToken,
                              @NonNull
                              UnregistrationListener listener)

Unregister from receiving further incoming call messages. When unregistration is successful, UnregistrationListener.onUnregistered(...) callback is raised.

If unregistration fails, UnregistrationListener.onError(...) callback is raised with RegistrationException. RegistrationException.getMessage(...) provides the root cause of the failure.

Unregistration Exceptions
Registration Exception	Error Code	Description
`VoiceException.EXCEPTION_INVALID_ACCESS_TOKEN`	20101	Twilio was unable to validate your Access Token
`VoiceException.EXCEPTION_INVALID_ACCESS_TOKEN_HEADER`	20102	Invalid Access Token header
`VoiceException.EXCEPTION_INVALID_ISSUER_SUBJECT`	20103	Invalid Access Token issuer or subject
`VoiceException.EXCEPTION_INVALID_ACCESS_TOKEN_EXPIRY`	20104	Access Token has expired or expiration date is invalid
`VoiceException.EXCEPTION_INVALID_ACCESS_TOKEN_NOT_VALID_YET`	20105	Access Token not yet valid
`VoiceException.EXCEPTION_INVALID_ACCESS_TOKEN_GRANT`	20106	Invalid Access Token grants
`VoiceException.EXCEPTION_INVALID_TTL`	20157	Expiration Time in the Access Token Exceeds Maximum Time Allowed
`VoiceException.EXCEPTION_INVALID_TOKEN`	20403	Forbidden. The account lacks permission to access the Twilio API
`VoiceException.EXCEPTION_ACCESS_TOKEN_REJECTED`	51007	Token authentication is rejected by authentication service
`RegistrationException.EXCEPTION_REGISTRATION_ERROR`	31301	Registration failed. Look at RegistrationException.getMessage(...) for details
`VoiceException.EXCEPTION_BAD_REQUEST`	31400	Bad Request. The request could not be understood due to malformed syntax
`VoiceException.EXCEPTION_FORBIDDEN`	31403	Forbidden. The server understood the request, but is refusing to fulfill it
`VoiceException.EXCEPTION_NOT_FOUND`	31404	Not Found. The server has not found anything matching the request
`VoiceException.EXCEPTION_REQUEST_TIMEOUT`	31408	Request Timeout. A request timeout occurred
`RegistrationException.EXCEPTION_CONFLICT`	31409	Conflict. The request could not be processed because of a conflict in the current state of the resource. Another request may be in progress
`RegistrationException.EXCEPTION_UPGRADE_REQUIRED`	31426	Upgrade Required. The client should switch to a different protocol
`RegistrationException.EXCEPTION_TOO_MANY_REQUEST`	31429	Too Many Requests. Too many requests were sent in a given amount of time
`VoiceException.EXCEPTION_INTERNAL_SERVER_ERROR`	31500	Internal Server Error. The server could not fulfill the request due to some unexpected condition
`VoiceException.EXCEPTION_BAD_GATEWAY`	31502	Bad Gateway. The server is acting as a gateway or proxy, and received an invalid response from a downstream server while attempting to fulfill the request
`VoiceException.EXCEPTION_SERVICE_UNAVAILABLE`	31503	Service Unavailable. The server is currently unable to handle the request due to a temporary overloading or maintenance of the server
`VoiceException.EXCEPTION_GATEWAY_TIMEOUT`	31504	Gateway Timeout. The server, while acting as a gateway or proxy, did not receive a timely response from an upstream server

The identity provided in the accessToken may only contain alpha-numeric and underscore characters. Other characters, including spaces, will result in undefined behavior.

Insights :

Insights events
Group Name	Event Name	Description	Since version
registration	unregistration	Unregistration is successful	3.0.0-preview4
registration	unregistration-error	Unregistration failed	3.0.0-preview4

The maximum number of characters for the identity provided in the token is 121. The identity may only contain alpha-numeric and underscore characters. Other characters, including spaces, or exceeding the maximum number of characters, will result in not being able to place or receive calls.

Parameters:

accessToken - An access token.

registrationChannel - An enumeration of registration channels.

registrationToken - An FCM or GCM device token.

listener - A listener that receives unregistration request status.

Usage example:

 Voice.unregister(accessToken, Voice.RegistrationChannel.FCM, registrationToken, unregistrationListener);

connect

@NonNull
public static Call connect(@NonNull
                           android.content.Context context,
                           @NonNull
                           ConnectOptions connectOptions,
                           @NonNull
                           Call.Listener listener)

Creates and returns a new Call. A SecurityException will be thrown if RECORD_AUDIO is not granted.

Call.Listener receives the state of the Call.

Call.Listener events
Callback Name	Description	Since version
`Call.Listener.onConnectFailure(Call, CallException)`	The call failed to connect. `CallException` provides details of the root cause.	3.0.0-preview1
`Call.Listener.onRinging(Call)`	Emitted once before the `Call.Listener.onConnected(Call)` callback when the callee is being alerted of a `Call`.	3.0.0-preview2
`Call.Listener.onConnected(Call)`	The call has connected.	3.0.0-preview1
`Call.Listener.onDisconnected(Call, CallException)`	The call was disconnected. If the call ends due to an error the `CallException` is non-null. If the call ends normally `CallException` is null.	3.0.0-preview1

If connect fails, Call.Listener.onConnectFailure(Call, CallException) callback is raised with CallException. VoiceException.getMessage() and VoiceException.getExplanation() provide details of the failure. If Call.disconnect() is called while attempting to connect, the Call.Listener.onDisconnected(Call, CallException) callback will be raised with no error.

If connect(Context, ConnectOptions, Call.Listener) fails due to an authentication error, the SDK receives one of the following errors.

Authentication Exceptions
Authentication Exception	Error Code	Description
`VoiceException.EXCEPTION_INVALID_ACCESS_TOKEN`	20101	Twilio was unable to validate your Access Token
`VoiceException.EXCEPTION_INVALID_ACCESS_TOKEN_HEADER`	20102	Invalid Access Token header
`VoiceException.EXCEPTION_INVALID_ISSUER_SUBJECT`	20103	Invalid Access Token issuer or subject
`VoiceException.EXCEPTION_INVALID_ACCESS_TOKEN_EXPIRY`	20104	Access Token has expired or expiration date is invalid
`VoiceException.EXCEPTION_INVALID_ACCESS_TOKEN_NOT_VALID_YET`	20105	Access Token not yet valid
`VoiceException.EXCEPTION_INVALID_ACCESS_TOKEN_GRANT`	20106	Invalid Access Token grants
`VoiceException.EXCEPTION_AUTH_FAILURE`	20151	Twilio failed to authenticate the client
`VoiceException.EXCEPTION_INVALID_TTL`	20157	Expiration Time in the Access Token Exceeds Maximum Time Allowed
`VoiceException.EXCEPTION_INVALID_TOKEN`	20403	Forbidden. The account lacks permission to access the Twilio API
`CallException.EXCEPTION_INVALID_APPLICATION_SID`	21218	Invalid ApplicationSid

If connect(Context, ConnectOptions, Call.Listener) fails due to any other reasons, the SDK receives one of the following errors.

Call Exceptions
Call Exception	Error Code	Description
`CallException.EXCEPTION_CONNECTION_ERROR`	31005	Connection error
`CallException.EXCEPTION_CALL_CANCELLED`	31008	Call Cancelled
`CallException.EXCEPTION_TRANSPORT_ERROR`	31009	Transport error
`CallException.EXCEPTION_MALFORMED_REQUEST`	31100	Malformed request
`CallException.EXCEPTION_AUTHORIZATION_ERROR`	31201	Authorization error
`VoiceException.EXCEPTION_BAD_REQUEST`	31400	Bad Request
`VoiceException.EXCEPTION_FORBIDDEN`	31403	Forbidden
`VoiceException.EXCEPTION_NOT_FOUND`	31404	Not Found
`VoiceException.EXCEPTION_REQUEST_TIMEOUT`	31408	Request Timeout
`CallException.EXCEPTION_TEMPORARILY_UNAVAILABLE_ERROR`	31480	Temporarily Unavailable
`CallException.EXCEPTION_CALL_OR_TRANSACTION_DOES_NOT_EXIST_ERROR`	31481	Call/Transaction Does Not Exist
`CallException.EXCEPTION_ADDRESS_INCOMPLETE_ERROR`	31484	Address Incomplete
`CallException.EXCEPTION_BUSY_HERE_ERROR`	31486	Busy Here
`CallException.EXCEPTION_REQUEST_TERMINATED_ERROR`	31487	Request Terminated
`VoiceException.EXCEPTION_INTERNAL_SERVER_ERROR`	31500	Internal Server Error
`VoiceException.EXCEPTION_BAD_GATEWAY`	31502	Bad Gateway
`VoiceException.EXCEPTION_SERVICE_UNAVAILABLE`	31503	Service Unavailable
`VoiceException.EXCEPTION_GATEWAY_TIMEOUT`	31504	Gateway Timeout
`CallException.EXCEPTION_DNS_RESOLUTION`	31530	DNS Resolution Error
`CallException.EXCEPTION_BUSY_EVERYWHERE_ERROR`	31600	Busy Everywhere
`CallException.EXCEPTION_DECLINE_ERROR`	31603	Decline
`CallException.EXCEPTION_DOES_NOT_EXIST_ANYWHERE_ERROR`	31604	Does Not Exist Anywhere
`CallException.EXCEPTION_SIGNALING_CONNECTION_DISCONNECTED`	53001	Signaling connection disconnected
`CallException.EXCEPTION_CLIENT_LOCAL_MEDIA_DESCRIPTION`	53400	Client is unable to create or apply a local media description
`CallException.EXCEPTION_SERVER_LOCAL_MEDIA_DESCRIPTION`	53401	Server is unable to create or apply a local media description
`CallException.EXCEPTION_CLIENT_REMOTE_MEDIA_DESCRIPTION`	53402	Client is unable to apply a remote media description
`CallException.EXCEPTION_SERVER_REMOTE_MEDIA_DESCRIPTION`	53403	Server is unable to apply a remote media description
`CallException.EXCEPTION_NO_SUPPORTED_CODEC`	53404	No supported code
`CallException.EXCEPTION_MEDIA_CONNECTION_FAILED`	53405	Media connection failed

Insights :

Insights events
Group Name	Event Name	Description	Since version
connection	outgoing	Outgoing call is made. Call state is in `Call.State.CONNECTING` state	3.0.0-beta2
settings	codec	Negotiated selected codec is received and remote SDP is set	5.0.1

If connect fails, an error event is published to Insights.

Insights events
Group Name	Event Name	Description	Since version
connection	error	Error description. Call state transitions to `Call.State.DISCONNECTED`	3.0.0-beta2

Parameters:

context - An Android context.

connectOptions - A set of options that allow you to configure your Call.

listener - A listener that receives call status.

Returns:

A new Call

Usage example:


 ConnectOptions connectOptions = new ConnectOptions.Builder(accessToken).build();
 Call call = Voice.connect(context, connectOptions, new Call.Listener() {
     @Override
      public void onRinging(@NonNull Call call) {
          Log.d(TAG, "Ringing");
      }

     @Override
      public void onConnected(@NonNull final Call call) {
          Log.d(TAG, "Received onConnected " + call.getSid());
      }

     @Override
      public void onConnectFailure(@NonNull Call call, @NonNull CallException callException) {
          Log.d(TAG, "Received onConnectFailure with CallException: " + callException.getErrorCode()+ ":" + callException.getMessage());
      }

     @Override
      public void onDisconnected(@NonNull Call call, CallException callException) {
          if (callException != null) {
              Log.d(TAG, "Received onDisconnected with CallException: " + callException.getMessage() + ": " + call.getSid());
          } else {
              Log.d(TAG, "Received onDisconnected");
          }
      }
  });
  }

connect

@NonNull
public static Call connect(@NonNull
                           android.content.Context context,
                           @NonNull
                           java.lang.String accessToken,
                           @NonNull
                           Call.Listener listener)

Creates and returns a new Call. A SecurityException will be thrown if RECORD_AUDIO is not granted.

Call.Listener receives the state of the Call.

Call.Listener events
Callback Name	Description	Since version
`Call.Listener.onConnectFailure(Call, CallException)`	The call failed to connect. `CallException` provides details of the root cause.	3.0.0-preview1
`Call.Listener.onRinging(Call)`	Emitted once before the `Call.Listener.onConnected(Call)` callback when the callee is being alerted of a `Call`.	3.0.0-preview2
`Call.Listener.onConnected(Call)`	The call has connected.	3.0.0-preview1
`Call.Listener.onDisconnected(Call, CallException)`	The call was disconnected. If the call ends due to an error the `CallException` is non-null. If the call ends normally `CallException` is null.	3.0.0-preview1

If connect fails, Call.Listener.onConnectFailure(Call, CallException) callback is raised with CallException. VoiceException.getMessage() and VoiceException.getExplanation() provide details of the failure. If Call.disconnect() is called while attempting to connect, the Call.Listener.onDisconnected(Call, CallException) callback will be raised with no error.

If connect(Context, String, Call.Listener) fails due to an authentication error, the SDK receives one of the following errors.

Authentication Exceptions
Authentication Exception	Error Code	Description
`VoiceException.EXCEPTION_INVALID_ACCESS_TOKEN`	20101	Twilio was unable to validate your Access Token
`VoiceException.EXCEPTION_INVALID_ACCESS_TOKEN_HEADER`	20102	Invalid Access Token header
`VoiceException.EXCEPTION_INVALID_ISSUER_SUBJECT`	20103	Invalid Access Token issuer or subject
`VoiceException.EXCEPTION_INVALID_ACCESS_TOKEN_EXPIRY`	20104	Access Token has expired or expiration date is invalid
`VoiceException.EXCEPTION_INVALID_ACCESS_TOKEN_NOT_VALID_YET`	20105	Access Token not yet valid
`VoiceException.EXCEPTION_INVALID_ACCESS_TOKEN_GRANT`	20106	Invalid Access Token grants
`VoiceException.EXCEPTION_AUTH_FAILURE`	20151	Twilio failed to authenticate the client
`VoiceException.EXCEPTION_INVALID_TTL`	20157	Expiration Time in the Access Token Exceeds Maximum Time Allowed
`VoiceException.EXCEPTION_INVALID_TOKEN`	20403	Forbidden. The account lacks permission to access the Twilio API
`CallException.EXCEPTION_INVALID_APPLICATION_SID`	21218	Invalid ApplicationSid

If connect(Context, String, Call.Listener) fails due to any other reason, the SDK receives one of the following errors.

Call Exceptions
Call Exception	Error Code	Description
`CallException.EXCEPTION_CONNECTION_ERROR`	31005	Connection error
`CallException.EXCEPTION_CALL_CANCELLED`	31008	Call Cancelled
`CallException.EXCEPTION_TRANSPORT_ERROR`	31009	Transport error
`CallException.EXCEPTION_MALFORMED_REQUEST`	31100	Malformed request
`CallException.EXCEPTION_AUTHORIZATION_ERROR`	31201	Authorization error
`VoiceException.EXCEPTION_BAD_REQUEST`	31400	Bad Request
`VoiceException.EXCEPTION_FORBIDDEN`	31403	Forbidden
`VoiceException.EXCEPTION_NOT_FOUND`	31404	Not Found
`VoiceException.EXCEPTION_REQUEST_TIMEOUT`	31408	Request Timeout
`CallException.EXCEPTION_TEMPORARILY_UNAVAILABLE_ERROR`	31480	Temporarily Unavailable
`CallException.EXCEPTION_CALL_OR_TRANSACTION_DOES_NOT_EXIST_ERROR`	31481	Call/Transaction Does Not Exist
`CallException.EXCEPTION_ADDRESS_INCOMPLETE_ERROR`	31484	Address Incomplete
`CallException.EXCEPTION_BUSY_HERE_ERROR`	31486	Busy Here
`CallException.EXCEPTION_REQUEST_TERMINATED_ERROR`	31487	Request Terminated
`VoiceException.EXCEPTION_INTERNAL_SERVER_ERROR`	31500	Internal Server Error
`VoiceException.EXCEPTION_BAD_GATEWAY`	31502	Bad Gateway
`VoiceException.EXCEPTION_SERVICE_UNAVAILABLE`	31503	Service Unavailable
`VoiceException.EXCEPTION_GATEWAY_TIMEOUT`	31504	Gateway Timeout
`CallException.EXCEPTION_DNS_RESOLUTION`	31530	DNS Resolution Error
`CallException.EXCEPTION_BUSY_EVERYWHERE_ERROR`	31600	Busy Everywhere
`CallException.EXCEPTION_DECLINE_ERROR`	31603	Decline
`CallException.EXCEPTION_DOES_NOT_EXIST_ANYWHERE_ERROR`	31604	Does Not Exist Anywhere
`CallException.EXCEPTION_SIGNALING_CONNECTION_DISCONNECTED`	53001	Signaling connection disconnected
`CallException.EXCEPTION_CLIENT_LOCAL_MEDIA_DESCRIPTION`	53400	Client is unable to create or apply a local media description
`CallException.EXCEPTION_SERVER_LOCAL_MEDIA_DESCRIPTION`	53401	Server is unable to create or apply a local media description
`CallException.EXCEPTION_CLIENT_REMOTE_MEDIA_DESCRIPTION`	53402	Client is unable to apply a remote media description
`CallException.EXCEPTION_SERVER_REMOTE_MEDIA_DESCRIPTION`	53403	Server is unable to apply a remote media description
`CallException.EXCEPTION_NO_SUPPORTED_CODEC`	53404	No supported code
`CallException.EXCEPTION_MEDIA_CONNECTION_FAILED`	53405	Media connection failed

The identity provided in the accessToken may only contain alpha-numeric and underscore characters. Other characters, including spaces, will result in undefined behavior.

Insights :

Insights events
Group Name	Event Name	Description	Since version
connection	outgoing	Outgoing call is made. Call state is in `Call.State.CONNECTING` state	3.0.0-beta2
settings	codec	Negotiated selected codec is received and remote SDP is set	5.0.1

If connect fails, an error event is published to Insights.

Insights events
Group Name	Event Name	Description	Since version
connection	error	Error description. Call state transitions to `Call.State.DISCONNECTED`	3.0.0-beta2

The maximum number of characters for the identity provided in the token is 121. The identity may only contain alpha-numeric and underscore characters. Other characters, including spaces, or exceeding the maximum number of characters, will result in not being able to place or receive calls.

Parameters:

context - An Android context.

accessToken - The accessToken that provides the identity and grants of the caller.

listener - A listener that receives call status.

Returns:

A new Call

Usage example:


 Call call = Voice.connect(context, accessToken, new Call.Listener() {
     @Override
      public void onRinging(@NonNull Call call) {
          Log.d(TAG, "Ringing");
      }

     @Override
      public void onConnected(@NonNull final Call call) {
          Log.d(TAG, "Received onConnected " + call.getSid());
      }

     @Override
      public void onConnectFailure(@NonNull Call call, @NonNull CallException callException) {
          Log.d(TAG, "Received onConnectFailure with CallException: " + callException.getErrorCode()+ ":" + callException.getMessage());
      }

     @Override
      public void onDisconnected(@NonNull Call call, CallException callException) {
          if (callException != null) {
              Log.d(TAG, "Received onDisconnected with CallException: " + callException.getMessage() + ": " + call.getSid());
          } else {
              Log.d(TAG, "Received onDisconnected");
          }
      }
  });
  }

handleMessage

public static boolean handleMessage(@NonNull
                                    android.content.Context context,
                                    @NonNull
                                    java.util.Map<java.lang.String,java.lang.String> data,
                                    @NonNull
                                    MessageListener listener)

Handle messages from FCM.

Twilio sends call notification messages via GCM/FCM. The message type is encoded in the dictionary with the key twi_message_type with the value twilio.voice.call.

A call message is sent when someone wants to reach the registered identity. Passing a call message into handleMessage(Context, Bundle, MessageListener) will result in a CallInvite raised in the MessageListener and return true.

A CancelledCallInvite will be raised to the provided MessageListener for the following reasons:

The call is prematurely disconnected by the caller
The callee does not accept or reject the call within 30 seconds
The SDK is unable to establish a connection to Twilio

Passing malformed data to handleMessage(Context, Map, MessageListener) will return false and no MessageListener callback will be raised.

Insights :

Insights events
Group Name	Event Name	Description	Since version
connection	incoming	Incoming call notification received	3.0.0-preview1
connection	listen	Raised when an attempt to listen for cancellations is made	5.0.0
connection	listening	Raised when an attempt to listen for cancellations has succeeded	5.0.0
connection	cancel	Raised when a cancellation has been reported	5.0.0
connection	listening-error	Raised when an attempt to listen for cancellation has failed	5.0.0
registration	unsupported-cancel-message-error	Raised when a "cancel" push notification is processed by the SDK. This version of the SDK does not support "cancel" push notifications	5.0.0

Parameters:

context - An Android context.

data - Push notification payload.

listener - A MessageListener to receive incoming push notification callbacks.

Returns:

A boolean value that indicates whether the payload is a valid notification sent by Twilio.

Usage example:


 boolean valid = Voice.handleMessage(dataMap, new MessageListener() {
     @Override
      public void onCallInvite(@NonNull CallInvite callInvite) {
          Log.d(TAG, "Received CallInvite");
      }

     @Override
      public void onCancelledCallInvite(@NonNull CancelledCallInvite cancelledCallInvite) {
          Log.d(TAG, "Received CancelledCallInvite");
      }
 });

handleMessage

public static boolean handleMessage(@NonNull
                                    android.content.Context context,
                                    @NonNull
                                    android.os.Bundle data,
                                    @NonNull
                                    MessageListener listener)

Handle messages from GCM.

Twilio sends call notification messages via GCM/FCM. The message type is encoded in the dictionary with the key twi_message_type with the value twilio.voice.call.

A call message is sent when someone wants to reach the registered identity. Passing a call message into handleMessage(Context, Bundle, MessageListener) will result in a CallInvite raised in the MessageListener and return true.

A CancelledCallInvite will be raised to the provided MessageListener for the following reasons:

The call is prematurely disconnected by the caller
The callee does not accept or reject the call within 30 seconds
The SDK is unable to establish a connection to Twilio

Passing malformed data to handleMessage(Context, Map, MessageListener) will return false and no MessageListener callback will be raised.

Insights :

Insights events
Group Name	Event Name	Description	Since version
connection	incoming	Incoming call notification received	3.0.0-preview1
connection	listen	Raised when an attempt to listen for cancellations is made	5.0.0
connection	listening	Raised when an attempt to listen for cancellations has succeeded	5.0.0
connection	cancel	Raised when a cancellation has been reported	5.0.0
connection	listening-error	Raised when an attempt to listen for cancellation has failed	5.0.0
registration	unsupported-cancel-message-error	Raised when a "cancel" push notification is processed by the SDK. This version of the SDK does not support "cancel" push notifications	5.0.0

Parameters:

context - An Android context.

data - Push notification payload.

listener - A MessageListener to receive incoming push notification callbacks.

Returns:

A boolean value that indicates whether the payload is a valid notification sent by Twilio.

Usage example:


 boolean valid = Voice.handleMessage(dataMap, new MessageListener() {
     @Override
      public void onCallInvite(@NonNull CallInvite callInvite) {
          Log.d(TAG, "Received CallInvite");
      }

     @Override
      public void onCancelledCallInvite(@NonNull CancelledCallInvite cancelledCallInvite) {
          Log.d(TAG, "Received CancelledCallInvite");
      }
 });

getVersion
```
@NonNull
public static java.lang.String getVersion()
```
Returns the version of the Voice SDK.

Returns:

The version of the SDK.

getLogLevel
```
@NonNull
public static LogLevel getLogLevel()
```
Returns the logging level for messages logged by the Voice SDK. The default level is LogLevel.ERROR.

Returns:

the logging level

getModuleLogLevel
```
@NonNull
public static LogLevel getModuleLogLevel(LogModule module)
```
Returns the logging level for messages logged by the specified LogModule. The default log level for each module is LogLevel.ERROR.

Returns:

the logging level

isInsightsEnabled
```
public static boolean isInsightsEnabled()
```
Returns if reporting statistics to Insights is enabled. Sending stats data to Insights is enabled by default. The setting is specified in enableInsights and can be updated via enableInsights(boolean)

getRegion
```
@Deprecated
@NonNull
public static java.lang.String getRegion()
```
Deprecated.
As of release 5.3.0, use getEdge() instead.

Returns the region specified region. The default region uses Global Low Latency routing, which establishes a connection with the closest region to the user. This value can be updated via setRegion(String)

getEdge
```
@NonNull
public static java.lang.String getEdge()
```
Returns the edge specified by edge. The default edge uses Global Low Latency (roaming edge location)routing, which establishes a connection with the closest data center to the user. This value can be updated via setRegion(String)

getAudioDevice

@NonNull
public static AudioDevice getAudioDevice()

Returns the AudioDevice.

setLogLevel

public static void setLogLevel(@NonNull
                               LogLevel level)

Sets the logging level for messages logged by the Voice SDK.

Parameters:: level - The logging level

setModuleLogLevel

public static void setModuleLogLevel(@NonNull
                                     LogModule module,
                                     @NonNull
                                     LogLevel level)

Sets the logging level for messages logged by a specific module.

Parameters:: module - The module for this log level.; level - The logging level.

enableInsights
```
public static void enableInsights(boolean enable)
```
Specify reporting statistics to Insights. Sending stats data to Insights is enabled by default.
NOTE: Setting the flag during a call will not be applied to ongoing calls. The flag will be applied to subsequent connect(Context, String, Call.Listener) or handleMessage(Context, Bundle, MessageListener) API calls.

setRegion
```
@Deprecated
public static void setRegion(@NonNull
                             java.lang.String region)
```
Deprecated.
As of release 5.3.0, use setEdge(String) instead.

Sets the region (Twilio data center) for the SDK. The default region uses Global Low Latency routing, which establishes a connection with the closest region to the user.
NOTE: Setting the region during a call will not be applied to ongoing calls. The region will be applied to subsequent connect(Context, String, Call.Listener) or handleMessage(Context, Bundle, MessageListener) API calls.

Parameters:

region - The region.

setEdge
```
public static void setEdge(@NonNull
                           java.lang.String edge)
```
Sets the edge (Twilio data center) for the SDK. The edge value is a Twilio Edge name that corresponds to a geographic location of Twilio infrastructure that the client will connect to. The default value `roaming` automatically selects an edge based on the latency between client and available edges. `roaming` requires the upstream DNS to support [RFC7871](https://tools.ietf.org/html/rfc7871). See [Global Low Latency requirements](https://www.twilio.com/docs/voice/client/javascript/voice-client-js-and-mobile-sdks-network-connectivity-requirements#global-low-latency-requirements) for more information.
NOTE: Setting the edge during a call will not be applied to ongoing calls. The edge will be applied to subsequent connect(Context, String, Call.Listener) or handleMessage(Context, Bundle, MessageListener) API calls. The SDK will throw the IllegalArgumentException if both edge and `region` values are specified.

Parameters:

edge - The edge.

setAudioDevice
```
public static void setAudioDevice(@NonNull
                                  AudioDevice audioDevice)
                           throws java.lang.UnsupportedOperationException
```
Sets the custom audio device. The audioDevice can be updated when there is no call in progress and will be applied to subsequent connect(Context, String, Call.Listener) or handleMessage(Context, Bundle,MessageListener) API calls. Setting the audioDevice during a call will result in UnsupportedOperationException.

Parameters:

audioDevice - The audio device.

Throws:

java.lang.UnsupportedOperationException

Class Voice

Nested Class Summary

Method Summary

Methods inherited from class java.lang.Object

Method Detail

register

unregister

connect

connect

handleMessage

handleMessage

getVersion

getLogLevel

getModuleLogLevel

isInsightsEnabled

getRegion

getEdge

getAudioDevice

setLogLevel

setModuleLogLevel

enableInsights

setRegion

setEdge

setAudioDevice