1. References
  2. VoxEngine
  3. Call
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Call

Represents an audio or video call.

Methods

addEventListener

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addEventListener(event: 
CallEvents
, callback: 
Function
): 
void

Adds a handler for the specified CallEvents event. Use only functions as handlers; anything except a function leads to the error and scenario termination when a handler is called.

Parameters

  • event:

    CallEvents

    Event class (i.e., CallEvents.Connected)

  • callback:

    Function

    Handler function. A single parameter is passed - object with event information

Returns

  • type:

    void

answer

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answer(extraHeaders: 
{[header: string]: string}
, parameters: 
CallAnswerParameters
): 
void

Answers the incoming call. Use it only for non-P2P call legs connection. Remember that you can use the Call.startEarlyMedia method before answering a call.

Parameters

  • extraHeaders:

    {[header: string]: string}

    Optional

    Optional. Custom parameters (SIP headers) that should be passed with the answer request. Custom header names have to begin with the 'X-' prefix. The "X-" headers could be handled by a SIP phone or WEB SDK (e.g. see the Connected event). Example: {'X-header':'value'}

  • parameters:

    CallAnswerParameters

    Optional

    Optional. Answering call parameters

Returns

  • type:

    void

answerDirect

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answerDirect(peerCall: 
Call
, extraHeaders: 
{[header: string]: string}
, parameters: 
CallAnswerParameters
): 
void

Answer the incoming call in the peer-to-peer mode. Use it only for P2P call legs connection.

Parameters

  • peerCall:

    Call

    The other P2P call leg.

  • extraHeaders:

    {[header: string]: string}

    Optional

    Optional. Custom parameters (SIP headers) that should be passed with the answer request. Custom header names have to begin with the 'X-' prefix. The "X-" headers could be handled by a SIP phone or WEB SDK (e.g. see the Connected (/docs/references/websdk/enums/callevents.html#connected) event). Example: {'X-header':'value'}

  • parameters:

    CallAnswerParameters

    Optional

    Optional. Answering call parameters

Returns

  • type:

    void

callerid

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callerid(): 
string

Returns the callerID of the caller, which is displayed to the callee. Normally it is some phone number that can be used for callback. IMPORTANT: test numbers rented from Voximplant cannot be used as CallerIDs, the values can be only real numbers.

Returns

  • type:

    string

clientType

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clientType(): 
string

Returns a type of the client.

Returns

  • type:

    string

customData

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customData(customData: 
string
): 
string

Sets or gets a custom string associated with the particular call (the Call object). The customData value could be sent from WEB/iOS/Android SDKs, and then it becomes the customData value in the Call object. Note that if you receive a value from an SDK, you can always replace it manually. SDKs can pass customData in two ways:
1) when SDK calls the Voximplant cloud
2) when SDK answers the call from the Voximplant cloud. See the syntax and details in the corresponding references: WEB SDK call() / WEB SDK answer() / iOS call:settings: / iOS answerWithSettings / Android call() / Android answer()

Parameters

  • customData:

    string

    Optional

    Optional. Custom call data to set. Maximum size is 200 bytes

Returns

  • type:

    string

decline

Deprecated
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Use Call.reject instead

decline(code: 
number
, extraHeaders: 
{[header: string]: string}
): 
void

Rejects the incoming call.

Parameters

  • code:

    number

    SIP status code

  • extraHeaders:

    {[header: string]: string}

    Optional

    Optional. Custom parameters (SIP headers) that should be passed with the reject request. Custom header names have to begin with the 'X-' prefix. The "X-" headers could be handled by a SIP phone or WEB SDK (e.g., see the incomingCall event). Example: {'X-header':'value'}

Returns

  • type:

    void

displayName

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displayName(): 
string

Returns the name of the caller, which is displayed to the callee. Normally it is a human-readable version of Call.callerid, e.g. a person's name.

Returns

  • type:

    string

handleBlindTransfer

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handleBlindTransfer(handle: 
boolean
): 
void

Whether to enable blind transfers. When enabled, the CallEvents.BlindTransferRequested event is triggered to request for the third call leg within an existing session and notify the transfer initiator of the result.

Parameters

  • handle:

    boolean

    Enable/disable blind transfers

Returns

  • type:

    void

handleMicStatus

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handleMicStatus(handle: 
boolean
): 
void

Whether to enable detection of microphone status in the call. If detection is enabled, the CallEvents.MicStatusChange event is triggered at each status' change.

Parameters

  • handle:

    boolean

    Enable/disable microphone status analysis. The default value is false

Returns

  • type:

    void

handleTones

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handleTones(doHandle: 
boolean
, supportedDtmfTypes: 
DTMFType
): 
void

Changes DTMF processing mode (in-band DTMF, RFC 2833 DTMF and DTMF over SIP INFO) telephony signals. If true, each received DTMF signal triggers the CallEvents.ToneReceived and removes from audio stream.

Parameters

  • doHandle:

    boolean

    Whether to enable DTMF analysis. The default values is true

  • supportedDtmfTypes:

    DTMFType

    Optional

    The DTMF type to process. The default value is ALL

Returns

  • type:

    void

hangup

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hangup(extraHeaders: 
{[header: string]: string}
): 
void

Attempts finishing the current call. Triggers one of the following events:

  1. CallEvents.Disconnected if the call is active before hangup.
  2. CallEvents.Failed if it is an outgoing call that is not connected previously.
    If there are no other active calls and/or SmartQueue requests in the call session, the AppEvents.Terminating and AppEvents.Terminated events are triggered in 60 seconds (see the session limits for details).

Parameters

  • extraHeaders:

    {[header: string]: string}

    Optional

    Optional. Custom parameters (SIP headers) that should be passed with the hangup request. Custom header names have to begin with the 'X-' prefix. The "X-" headers could be handled by a SIP phone or WEB SDK (e.g. see the incomingCall event). Example: {'X-header':'value'}

Returns

  • type:

    void

id

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id(): 
string

Returns the call's id. Each call in a JavaScript session has its own unique id.

Returns

  • type:

    string

incoming

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incoming(): 
boolean

Whether the call is incoming.

Returns

  • type:

    boolean

notifyBlindTransferFailed

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notifyBlindTransferFailed(code: 
number
, reason: 
string
): 
void

Sends a notification about a failed call transfer with an error code and reason.

Parameters

  • code:

    number

    Error code

  • reason:

    string

    Reason why the blind transfer is failed

Returns

  • type:

    void

notifyBlindTransferSuccess

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notifyBlindTransferSuccess(): 
void

Sends a notification of a successful call transfer with the 200 OK message.

Returns

  • type:

    void

number

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number(): 
string

Returns a dialed number of the incoming or outgoing call.

Returns

  • type:

    string

playProgressTone

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playProgressTone(country: 
string
): 
void

Provides country-specific dial tones. The method sends a command to the Voximplant cloud to start playing dial tones in the call. The dial tones fully depend on the Voximplant cloud. Note that in order to work properly in a call that is not connected yet, you need to call the Call.startEarlyMedia method before using this function. IMPORTANT: each call object can send media to any number of other calls (media units), but can receive only one audio stream. A new incoming stream always replaces the previous one.

Parameters

  • country:

    string

    2-letter country code. Currently supported values are US, RU

Returns

  • type:

    void

record

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record(parameters: 
CallRecordParameters
): 
void

Starts recording the incoming and outgoing audio for this call. This method triggers the CallEvents.RecordStarted event. The default quality is 8kHz / 32kbps; the format is mp3.

Parameters

Returns

  • type:

    void

reject

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reject(code: 
number
, extraHeaders: 
{[header: string]: string}
): 
void

Rejects the incoming call. First it triggers the CallEvents.Disconnected event immediately. The AppEvents.Terminating and AppEvents.Terminated events are triggered in 60 seconds.

Parameters

  • code:

    number

    SIP status code with the rejection reason. You can pass any standard SIP code starting with 3xx, 4xx, 5xx and 6xx as a reject reason.

  • extraHeaders:

    {[header: string]: string}

    Optional

    Optional. Custom parameters (SIP headers) that should be passed with the reject request. Custom header names have to begin with the 'X-' prefix. The "X-" headers could be handled by a SIP phone or WEB SDK (e.g. see the incomingCall event). Example: {'X-header':'value'}

Returns

  • type:

    void

removeEventListener

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removeEventListener(event: 
CallEvents
, callback: 
Function
): 
void

Removes a handler for the specified CallEvents event.

Parameters

  • event:

    CallEvents

    Event class (i.e., CallEvents.Connected)

  • callback:

    Function

    Optional

    Optional. Handler function. If not specified, all handler functions are removed

Returns

  • type:

    void

ring

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ring(extraHeaders: 
{[header: string]: string}
): 
void

Plays dial tones for the incoming call. The method sends a low-level command to the endpoint device to start playing dial tones for the call. So the dial tones depend on endpoint device's behavior rather than on the Voximplant cloud. IMPORTANT: each call object can send media to any number of other calls (media units), but can receive only one audio stream. A new incoming stream always replaces the previous one.

Parameters

  • extraHeaders:

    {[header: string]: string}

    Optional

    Optional. Custom parameters (SIP headers) that should be passed with the request. Custom header names have to begin with the 'X-' prefix. The "X-" headers could be handled by a SIP phone or WEB SDK (e.g. see the incomingCall event). Example: {'X-header':'value'}

Returns

  • type:

    void

say

Warning
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This method internally operates with the Player class and its events. Use the VoxEngine.createTTSPlayer to get more flexibility

say(text: 
string
, parameters: 
CallSayParameters
): 
void

Say some text to the CallEvents.Connected call. If text length exceeds 1500 characters the PlayerEvents.PlaybackFinished event is triggered with error description. IMPORTANT: each call object can send media to any number of other calls (media units), but can receive only one audio stream. A new incoming stream always replaces the previous one.

Parameters

  • text:

    string

    Message that is played to the call. To put an accent to the specified syllable, use the <say-as stress='1'></say-as> tag

  • parameters:

    CallSayParameters

    Optional

    Optional. TTS parameters

Returns

  • type:

    void

sendDigits

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sendDigits(digits: 
string
): 
void

Sends DTMF digits to the remote peer.

Parameters

  • digits:

    string

    Any combination of 0-9, *, #, p (pause) symbols

Returns

  • type:

    void

sendInfo

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sendInfo(mimeType: 
string
, body: 
string
, headers: 
{[header: string]: string}
): 
void

Sends info (SIP INFO) message to the call.

Parameters

  • mimeType:

    string

    MIME type of the message

  • body:

    string

    Message content. Maximum size is 8192 bytes according to the limits

  • headers:

    {[header: string]: string}

    Optional

    Optional. Headers to be passed with the message. Custom header names have to begin with the 'X-' prefix. The "X-" headers could be handled by a SIP phone or WEB SDK (e.g. see the incomingCall event). Example: {'X-header':'value'}

Returns

  • type:

    void

sendMediaTo

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sendMediaTo(mediaUnit: 
VoxMediaUnit
, parameters: 
SendMediaParameters
): 
void

Starts sending media (voice and video) from the call to the media unit. The target call has to be CallEvents.Connected earlier. IMPORTANT: each call object can send media to any number of the media units, but can receive only one audio stream. A new incoming stream always replaces the previous one.

Parameters

Returns

  • type:

    void

sendMessage

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sendMessage(text: 
string
): 
void

Sends a text message to the call.

Parameters

  • text:

    string

    Message text. Maximum size is 8192 bytes according to the limits

Returns

  • type:

    void

startEarlyMedia

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startEarlyMedia(extraHeaders: 
{[header: string]: string}
, scheme: 
string
, maxVideoBitrate: 
number
, audioLevelExtension: 
false
 | 
true
, conferenceCall: 
false
 | 
true
): 
void

Informs the call endpoint that early media is sent before accepting the call. It allows playing voicemail prompt or music before establishing the connection. It does not allow to listen to call endpoint. Note that unanswered call can be in "early media" state only for 60 seconds, see the session limits for details.

Parameters

  • extraHeaders:

    {[header: string]: string}

    Optional

    Optional. Custom parameters (SIP headers) that should be passed with the request. Custom header names have to begin with the 'X-' prefix. The "X-" headers could be handled by a SIP phone or WEB SDK (e.g. see the incomingCall event). Example: {'X-header':'value'}

  • scheme:

    string

    Optional

    Optional. Internal information about codecs from the AppEvents.CallAlerting event

  • maxVideoBitrate:

    number

    Optional

    Optional. Set the maximum possible video bitrate for the customer device in kbps

  • audioLevelExtension:

    false

    Optional

    Optional. Audio level extension

  • conferenceCall:

    false

    Optional

    Optional. Whether the call is coming from a conference. The default value is false

Returns

  • type:

    void

startPlayback

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startPlayback(url: 
string
, parameters: 
StartPlaybackParameters
): 
void

Starts to play an audio file to the answered call. You can stop playback manually via the Call.stopPlayback method. You can attach media streams later via the Call.sendMediaTo method etc. IMPORTANT: each call object can send media to any number of other calls (media units), but can receive only one audio stream. A new incoming stream always replaces the previous one.

Parameters

  • url:

    string

    HTTP/HTTPS url to the audio file. The file is cached after the first playing. Supported formats are: mp3, ogg, flac, and wav (mp3, speex, vorbis, flac, and wav codecs respectively). Maximum file size is 10 Mb

  • parameters:

    StartPlaybackParameters

    Optional

    Optional. Playback parameters

Returns

  • type:

    void

state

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state(): 
string

Returns the current state of the call. Possible values are: TERMINATED | CONNECTED | PROGRESSING | ALERTING.

Returns

  • type:

    string

stopMediaTo

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stopMediaTo(mediaUnit: 
VoxMediaUnit
): 
void

Stops sending media (voice and video) from the call to media unit.

Parameters

  • mediaUnit:

    VoxMediaUnit

    Media unit that does not need to receive media from this call anymore

Returns

  • type:

    void

stopPlayback

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stopPlayback(): 
void

Stops audio playback started before via the Call.startPlayback method.

Returns

  • type:

    void

toString

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toString(): 
string

Returns the human-readable description of the call's status.

Returns

  • type:

    string

vad

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vad(): 
boolean

Returns VAD (Voice Activity Detection) status. The including of the ASR also activates VAD so in that case vad() returns true.

Returns

  • type:

    boolean