Overview

TeXML is an XML based data structure used by Telnyx to build quick applications to be associated with your Telnyx phone numbers. When a call comes into one of your Telnyx Numbers, Telnyx makes an HTTP request to the URL endpoint you configured for that number. The endpoint will contain instructions telling Telnyx what to do next with the call.

Responses to the HTTP request are in an XML format that we call TeXML. TeXML allows you to specify instructions in your file using simple commands called verbs. TeXML Translator starts at the top of your TeXML file and executes your TeXML commands sequentially in the order they are arranged in the file.

How TeXML translator works

When a call is received by one of your Telnyx phone numbers, Telnyx lookup the URL endpoint you configured for that number and make an HTTP request to it. The URL endpoint then responds to the request with a TeXML file that instructs what to do next in the call. TeXML files have a standard .xml file extension.

Telnyx will read the instructions in the TeXML file, from top to bottom, and execute all the verbs/commands in order.

Outbound calls started via the TeXML Translator work the same way. When you start an outbound call, you also pass a link to a TeXML file. Telnyx will make a request to this file to determine how it should proceed with the call.

While a single TeXML document is executed at a time, many documents can be linked together and generated dynamically to create complex applications to fit any need.

TeXML syntax

TeXML Translator is XML-based and consists of the following elements:

<Response> element -- tag defining the body of the TeXML document
verb -- an XML tag denoting the action that you want Telnyx to take
noun -- the item for the action specified in the associated verb

Here is a simple TeXML file containing an example of a verb and noun used together:

<?xml version="1.0" encoding="UTF-8"?>

<!-- TeXML files must contain the Response element -->
<Response>
 <!-- Say and Dial are Verbs -->
    <Say>Thank you for calling Telnyx. Please hold.</Say>
    <Dial>
   <!-- Number is a Dial Noun -->
        <Number>+13129457420</Number>
    </Dial>
</Response>

Dynamic parameters

When creating a TeXML set of instructions you can make use of Mustache Templates to generate instructions dynamically at runtime.

Inserting dynamic content

You can make use of Mustache Dynamic templating to insert content into your TeXML instructions through HTTP request parameters in the webhook url we use to fetch your TeXML set of instructions. For example, you could create a TeXML set of instructions that calls a number that is set until the HTTP request is made to fetch your TeXML instructions.

You first create your TeXML instructions using Mustache Templating and set the {{PhoneNumber}} as a variable like this

<?xml version="1.0" encoding="UTF-8"?>
<Response>
  <Dial>
    <Number>{{PhoneNumber}}</Number>
  </Dial>
</Response>

The phone number can now be replaced at runtime by setting your TeXML webhook url to have PhoneNumber as a parameter.

curl -X POST https://api.telnyx.com/v2/texml/calls/{connection_id} \
--data-urlencode "To=+13121230000" \
--data-urlencode "From=+13120001234" \
--data-urlencode "Url=https://www.example.com/texml.xml?PhoneNumber=+18771234567" \
--data-urlencode "StatusCallback=https://www.example.com/statuscallback-listener" \
--header "Authorization: Bearer APIAuthKey_fromPortal"

The request parameters set by Telnyx, i.e. CallSid, From and To are also available for the Mustache Template. The list of the parameters for each of the callback can be found on our developer documentation page.

Iterate through lists

You can set arrays as parameters in your TeXML webhook url and let Mustache Template handle them. If for example you want the dial command to have two numbers you could add a Numbers list parameter to your callback Url.

curl -X POST https://api.telnyx.com/v2/texml/calls/{connection_id} \
--data-urlencode "To=+13121230000" \
--data-urlencode "From=+13120001234" \
--data-urlencode "Url=https://www.example.com/texml.xml?PhoneNumbers[]=+18771234567&PhoneNumbers[]=+18771234568" \
--data-urlencode "StatusCallback=https://www.example.com/statuscallback-listener" \
--header "Authorization: Bearer APIAuthKey_fromPortal"

Then you can handle the PhoneNumbers parameter in the TeXML instructions using the following syntax.

<?xml version="1.0" encoding="UTF-8"?>
<Response>
  <Dial>
  {{#PhoneNumbers}}
    <Number>{{.}}</Number>
  {{/PhoneNumbers}}
  </Dial>
</Response>

This will end up being parsed as

<?xml version="1.0" encoding="UTF-8"?>
<Response>
  <Dial>
    <Number>+18771234567</Number>
    <Number>+18771234568</Number>
  </Dial>
</Response>

Render conditional content

Conditional content is supported by using if/else statements in the TeXML instructions. You could define a set of instructions to dial an specific number depending on From parameter present in the HTTP request.

<?xml version="1.0" encoding="UTF-8"?>
<Response>
{{#if From == +18771234567}}
  <Dial>
    <Number>+18771234568</Number>
  </Dial>
{{#elseif From == +18771234568}}
  <Dial>
    <Number>+18771234567</Number>
  </Dial>
{{#else}}
  <Say>No valid number is present</Say>
{{/if}}
</Response>

Supported operators are ==, != and no operator for checking if the parameter value is not null.

Response

The baseline of TeXML files is the <Response> tag.

All verbs in a TeXML file must be placed within a single parent <Response> element, and each file can only have a single one.

Verbs

A verb identifies the action to take.

When using Verbs one instruction must completed before the next one is executed. Verbs may have optional TeXML attributes that override the flow of execution, allowing you customize the verb behavior.

All verbs are case sensitive, so <Dial> and <dial> are not interchangeable.

Voice verbs

The following verbs cause the specified action to take place during the call:

VERB	ACTION
`<Dial>`	Initiates a call to a phone or SIP number
`<Gather>`	Collects DTMF input from the caller or called party
`<Hangup>`	Disconnects the call
`<Pause>`	Waits silently for a specified number of seconds
`<Play>`	Plays an MP3 or WAV audio file
`<Record>`	Records and saves the audio in the call
`<Redirect>`	Transfers control of the call to another TeXML application
`<Refer>`	SIP refers (transfers) the call towards SIP infrastructure
`<Reject>`	Rejects the call
`<Say>`	Executes a Text-to-Speech instruction

Nouns

A noun is what the verb uses to complete an action and is placed inside a verb element. A noun can be the text that is read in a call or other TeXML elements that represent the action, such as Number to dial or a SIP URI to transfer the call to.

<?xml version="1.0" encoding="UTF-8"?>
<Response>
 <Dial>
      <Sip>sip:[email protected]</Sip>
 </Dial>
</Response>

Each verb has its own set of nouns. See the documentation for a specific verb for more details.

Additional request parameters

Each time Telnyx makes a request to your application to fetch new TeXML, additional parameters with information about the call will be sent with the request to your URL.

PARAMETER	DESCRIPTION
`CallSid`	A unique identifier for this call, generated by Telnyx.
`From`	The phone number of the party that initiated the call. Phone numbers are formatted with a '+' and country code, e.g. +16175551212 E.164 format.
`To`	The phone number of the called party. Phone numbers are formatted with a '+' and country code, e.g. +16175551212 E.164 format.

Data formats

Dates and times

All dates and times in requests to and from TeXML files follow Telnyx API conventions: UTC, and presented in RFC 2822 format.

Phone numbers

All numbers in requests to or from TeXML files follow Telnyx API conventions: E.164 format. Numbers in this format start with a plus sign ("+") and the country code.

SIP URIs follow Telnyx SIP Trunking and SIP Credentials conventions: sip:[email protected]

Dial

The <Dial> verb transfers an existing call to another destination. <Dial> will end this new call if: the called party does not answer, the number does not exist, or Telnyx receives a busy signal.

Verb Attributes

ATTRIBUTE	DESCRIPTION	OPTIONS	DEFAULT
`action`	Optional URL where TeXML will make a request to when the `<Dial>` call ends to retrieve a new set of TeXML instructions to continue the call flow.
`method`	HTTP request type used to retrieve the next set of instructions.	`GET`, `POST`	`POST`
`callerId`	Caller ID that must be a valid E.164 format number.
`fromDisplayName`	The `fromDisplayName` string to be used as the caller id name (SIP From Display Name) presented to the destination. The string should have a maximum of 128 characters, containing only letters, numbers, spaces, and -_~!.+ special characters. If ommited, the display name will be the same as the number in the `callerId` field.
`hangupOnStar`	The hangupOnStar attribute lets the initial caller hang up on the called party by pressing the '`*`' key on their phone. Does not apply for the Conference noun.	`true`, `false`	`false`
`record`	The record attribute lets you record both legs of a call within the associated `<Dial>` verb. It works with the `<Number>` and `<Sip>` nouns only. If you want to record the conference, please use record attribute on `<Conference>` noun. Recordings are available in two options: `mono-channel` or `dual-channel`.	`do-not-record`, `record-from-answer`, `record-from-ringing`, `record-from-answer-dual`, `record-from-ringing-dual`	`do-not-record`
`recordMaxLength`	Defines the maximum length for the recording in seconds.	`0`-`14400`, `0` for infinite	`0`
`recordingStatusCallback`	Optional URL that tells Telnyx where to make its `GET` or `POST` request when the recording is available.
`recordingStatusCallbackMethod`	HTTP request type used for `recordingStatusCallback`.	`GET`, `POST`	`POST`
`recordingStatusCallbackEvent`	The recording events for which Telnyx should a webhook on. Multiple events are separated by a space.	`in-progress`, `completed`, `absent`	`completed`
`recordingTimeout`	The number of seconds that Telnyx will wait for the recording to be stopped if silence is detected. The timer only starts when the speech is detected. Please note that the transcription is used to detect silence and the related charge will be applied.	Any integer greater than `0`. `0` for infinite	`0`
`timeLimit`	Sets the maximum duration in seconds of the call created by `<Dial>`.	60 - 14,400	14,400 (4 hours)
`timeout`	Sets the maximum time in seconds that Telnyx will wait for the dialed party to answer.	5 - 120	30
`ringTone`	The ringback tone played back to the caller.	`at`,`au`,`bg`,`br`,`be`,`ch`,`cl`,`cn`,`cz`,`de`,`dk`,`ee`,`es`,`fi`,`fr`,`gr`,`hu`,`il`,`in`,`it`,`lt`,`jp`,`mx`,`my`,`nl`,`no`,`nz`,`ph`,`pl`,`pt`,`ru`,`se`,`sg`,`th`,`uk`,`us`,`us-old`,`tw`,`ve`,`za`	`us`

Nouns

NOUN	DESCRIPTION	OPTIONAL ATTRIBUTES
`<Number>`	E.164 phone number.	`method`, `sendDigits`, `statusCallback`, `statusCallbackEvent`, `statusCallbackMethod`
`<Sip>`	SIP URI.	`method`, `password`, `statusCallback`, `statusCallbackEvent`, `statusCallbackMethod`, `url`, `username`
`<Queue>`	queue name	`method`, `url`

Send custom headers by appending them to the SIP URI -- just as you'd pass headers in a URI over HTTP. For example:

<?xml version="1.0" encoding="UTF-8"?>
<Response>
    <Dial>
        <Sip>
            sip:[email protected]?x-mycustomheader=foo&amp;x-myotherheader=bar
        </Sip>
    </Dial>
</Response>

Noun attributes

<Number> and <Sip> Attributes

ATTRIBUTE	DESCRIPTION	OPTIONS	DEFAULT
`statusCallback`	A URL for Telnyx to send webhook requests to on each event specified in the `statusCallbackEvent` attribute for outbound calls only. Inbound Status Callback events can be configured for TeXML the connection settings in the Mission Control Portal.
`statusCallbackEvent`	The call events for which Telnyx should send a webhook. Multiple events are separated by a space.	`initiated`, `ringing`, `answered`, `amd`, `dtmf`, `completed`	`completed`
`statusCallbackMethod`	HTTP request type Telnyx should use when requesting the `statusCallback` URL.	`GET`, `POST`	`POST`
`url`	Optional URL to another TeXML document that can contain `<Gather>` and `<Hangup>` verbs so that the called party can chose to take an action on the incoming call before the two parties are connected. The callee will continue to hear ringback while the `url` document is executed.
`method`	HTTP request type used for `url`.	`GET`, `POST`	`POST`
`machineDetection`	Enables Answering Machine Detection. Note: add `amd` event type to `statusCallbackEvent` list to receive the detection result webhook.	`Enable`, `Disable`, `DetectMessageEnd`	`Disable`
`detectionMode`	Sets the Answering Detection mode.	`Regular`, `Premium`	`Regular`
`machineDetectionTimeout`	Maximum timeout threshold for overall detection, in miliseconds.	`500 - 60000`

<Number> Only Attributes

ATTRIBUTE	DESCRIPTION	OPTIONS	DEFAULT
`sendDigits`	Digits (DTMF tones) to be automatically applied when the call is answered. Use `w` for 0.5s of silence.	Any digits

<Sip> Only Attributes

ATTRIBUTE	DESCRIPTION
`username`	Username for SIP authentication	`none`
`password`	Password for SIP authentication	`none`

<Queue> Attributes

ATTRIBUTE	DESCRIPTION
`method`	HTTP request type used for `url`.	`GET`, `POST`	`POST`
`url`	Optional URL to another TeXML document that can contain `<Play>`, `<Say>`, `<Gather>`, `<Pause>` and `<Redirect>` verbs. Document will be executed on the queued call before bridging the calls.

Simultaneous dialing

You can use multiple <Number> and <Sip>nouns within a <Dial> verb to dial multiple phone numbers and SIP addresses at the same time. The first person to answer the call will be connected to the caller, while the rest of the call attempts are hung up:

<?xml version="1.0" encoding="UTF-8"?>
<Response>
  <Dial>
    <Number>+18775551212</Number>
    <Sip>sip:[email protected]</Sip>
    <Number>+18771234567</Number>
  </Dial>
</Response>

Examples

<?xml version="1.0" encoding="UTF-8"?>
<Response>
    <Dial action="/nextinstructions.php" callerId="+13120001234">+19999999999</Dial>
</Response>

<?xml version="1.0" encoding="UTF-8"?>
<Response>
    <Dial action="/nextinstructions.php" callerId="+13120001234">
      <Number statusCallback="https://foo.com/my_call_stats" statusCallbackEvent="initiated ringing answered completed">+19999999999</Number>
    </Dial>
</Response>

<?xml version="1.0" encoding="UTF-8"?>
<Response>
    <Dial action="/nextinstructions.php" callerId="+13120001234" hangupOnStar="true">
      <Sip statusCallback="https://foo.com/my_sip_call_stats" statusCallbackEvent="initiated">sip:[email protected]</Sip>
    </Dial>
</Response>

<?xml version="1.0" encoding="UTF-8"?>
<Response>
    <Dial action="/nextinstructions.php" callerId="+13120001234">
      <Number statusCallback="https://foo.com/my_call_stats" statusCallbackEvent="initiated ringing answered completed amd" machineDetection="Enable" detectionMode="Regular">+19999999999</Number>
    </Dial>
</Response>

<?xml version="1.0" encoding="UTF-8"?>
<Response>
    <Dial>
      <Queue url="/before_bridge_action">TestQueue</Queue>
    </Dial>
</Response>

Expected callbacks

If action is set the following callback can be expected. when the call is completed. The new set of instructions can be sent as a response to it.

{
  "AccountSid" : "19a75cea-02c6-4b9a-84fa-c9bc8341feb8",
  "AnsweredTime" : "2023-09-06T09:05:14.860713Z",
  "CallLegId" : "7d87c352-4c94-11ee-99f7-02420a0daa69",
  "CallSessionId" : "7bf6178c-4c94-11ee-b679-02420aef02a0",
  "CallSid" : "v3:viLNGyAMjOw6H0AAmA3_CL4rbzYWgahKGqeoZ0Eu_TUYPeWs5w3z6w",
  "CallSidLegacy" : "v3:viLNGyAMjOw6H0AAmA3_CL4rbzYWgahKGqeoZ0Eu_TUYPeWs5w3z6w",
  "ConnectionId" : "2034058542482196149",
  "DataLocality" : "USA",
  "DialCallDuration" : "11",
  "DialCallSid" : "v3:t7KEildpy-HskSZeY78-WjFFcJMAaopsPfnkaH2J3NcByeTzgfVS1A",
  "DialCallSidLegacy" : "v3:t7KEildpy-HskSZeY78-WjFFcJMAaopsPfnkaH2J3NcByeTzgfVS1A",
  "DialCallStatus" : "completed | busy | no-answer | failed",
  "EndTime" : "2023-09-06T09:05:26.720715Z",
  "From" : "+13122010094",
  "OccurredAt" : "2023-09-06T09:05:26.720715Z",
  "OrganizationId" : "19a75cea-02c6-4b9a-84fa-c9bc8341feb8",
  "StartTime" : "2023-09-06T09:05:14.080710Z",
  "To" : "+12029925624",
  "UserId" : "19a75cea-02c6-4b9a-84fa-c9bc8341feb8",
}

If statusCallbackEvent are set you can expect the following webhooks.

initiated

{
   "AccountSid": "cb6cfbbc-eb00-41af-a3f3-0d7b32009e4b",
   "CallSid": "v2:7V3r4VFCGLTzKLOveE0-7vM9dX17-NRQgU1byo-uuOIX9JcDadLLKw",
   "CallSidLegacy": "v2:7V3r4VFCGLTzKLOveE0-7vM9dX17-NRQgU1byo-uuOIX9JcDadLLKw",
   "CallStatus": "initiated",
   "CallbackSource": "call-progress-events",
   "From": "+18445931290",
   "ParentCallSid": "v2:qiaymU9Ij90xJRRkYGWHOIx_41EVJPrzlny2zC67hwL1wVIUnnMrqQ",
   "ParentCallSidLegacy": "v2:qiaymU9Ij90xJRRkYGWHOIx_41EVJPrzlny2zC67hwL1wVIUnnMrqQ",
   "SequenceNumber": "0",
   "Timestamp": "2021-04-28 21:51:13.591099Z",
   "To": "+13122010055"
}

ringing

{
   "AccountSid": "cb6cfbbc-eb00-41af-a3f3-0d7b32009e4b",
   "CallSid": "v2:7V3r4VFCGLTzKLOveE0-7vM9dX17-NRQgU1byo-uuOIX9JcDadLLKw",
   "CallSidLegacy": "v2:7V3r4VFCGLTzKLOveE0-7vM9dX17-NRQgU1byo-uuOIX9JcDadLLKw",
   "CallStatus": "ringing",
   "CallbackSource": "call-progress-events",
   "From": "+18445931290",
   "ParentCallSid": "v2:qiaymU9Ij90xJRRkYGWHOIx_41EVJPrzlny2zC67hwL1wVIUnnMrqQ",
   "ParentCallSidLegacy": "v2:qiaymU9Ij90xJRRkYGWHOIx_41EVJPrzlny2zC67hwL1wVIUnnMrqQ",
   "SequenceNumber": "1",
   "Timestamp": "2021-04-28 21:51:13.591107Z",
   "To": "+13122010055"
}

in-progress

{
   "AccountSid": "cb6cfbbc-eb00-41af-a3f3-0d7b32009e4b",
   "CallSid": "v2:7V3r4VFCGLTzKLOveE0-7vM9dX17-NRQgU1byo-uuOIX9JcDadLLKw",
   "CallSidLegacy": "v2:7V3r4VFCGLTzKLOveE0-7vM9dX17-NRQgU1byo-uuOIX9JcDadLLKw",
   "CallStatus": "in-progress",
   "CallbackSource": "call-progress-events",
   "From": "+18445931290",
   "ParentCallSid": "v2:qiaymU9Ij90xJRRkYGWHOIx_41EVJPrzlny2zC67hwL1wVIUnnMrqQ",
   "ParentCallSidLegacy": "v2:qiaymU9Ij90xJRRkYGWHOIx_41EVJPrzlny2zC67hwL1wVIUnnMrqQ",
   "SequenceNumber": "2",
   "Timestamp": "2021-04-28 21:51:15.532975Z",
   "To": "+13122010055"
}

completed

{
   "AccountSid": "cb6cfbbc-eb00-41af-a3f3-0d7b32009e4b",
   "CallDuration": "2",
   "CallSid": "v2:7V3r4VFCGLTzKLOveE0-7vM9dX17-NRQgU1byo-uuOIX9JcDadLLKw",
   "CallSidLegacy": "v2:7V3r4VFCGLTzKLOveE0-7vM9dX17-NRQgU1byo-uuOIX9JcDadLLKw",
   "CallStatus": "completed",
   "CallbackSource": "call-progress-events",
   "From": "+18445931290",
   "HangupSource": "",
   "ParentCallSid": "v2:qiaymU9Ij90xJRRkYGWHOIx_41EVJPrzlny2zC67hwL1wVIUnnMrqQ",
   "ParentCallSidLegacy": "v2:qiaymU9Ij90xJRRkYGWHOIx_41EVJPrzlny2zC67hwL1wVIUnnMrqQ",
   "RecordingDuration": "5",
   "RecordingUrl": "https://recording.com/your-recording-url",
   "SequenceNumber": "3",
   "Timestamp": "2021-04-28 21:51:18.731479Z",
   "To": "+13122010055"
}

amd

{
   "AccountSid": "cb6cfbbc-eb00-41af-a3f3-0d7b32009e4b",
   "AnsweredBy": "machine_start|human|fax|machine_end_beep|machine_end_other|unknown",
   "CallSid": "v2:7V3r4VFCGLTzKLOveE0-7vM9dX17-NRQgU1byo-uuOIX9JcDadLLKw",
   "CallSidLegacy": "v2:7V3r4VFCGLTzKLOveE0-7vM9dX17-NRQgU1byo-uuOIX9JcDadLLKw",
   "MachineDetectionDuration": "23357"
}

If recordingStatusCallbackEvent are set you can expect the following webhooks.

in-progress

{
   "AccountSid": "cb6cfbbc-eb00-41af-a3f3-0d7b32009e4b",
   "CallSid": "v2:qiaymU9Ij90xJRRkYGWHOIx_41EVJPrzlny2zC67hwL1wVIUnnMrqQ",
   "CallSidLegacy": "v2:qiaymU9Ij90xJRRkYGWHOIx_41EVJPrzlny2zC67hwL1wVIUnnMrqQ",
   "From": "[email protected]",
   "RecordingChannels": "1",
   "RecordingSource": "DialVerb",
   "RecordingStatus": "in-progress",
   "To": "+12132045020"
}

completed

{
   "AccountSid": "cb6cfbbc-eb00-41af-a3f3-0d7b32009e4b",
   "CallSid": "v2:qiaymU9Ij90xJRRkYGWHOIx_41EVJPrzlny2zC67hwL1wVIUnnMrqQ",
   "CallSidLegacy": "v2:qiaymU9Ij90xJRRkYGWHOIx_41EVJPrzlny2zC67hwL1wVIUnnMrqQ",
   "From": "[email protected]",
   "RecordingChannels": "1",
   "RecordingDuration": "5",
   "RecordingSid": "35094891-3290-4142-b2c2-b2eda57534cf",
   "RecordingSource": "DialVerb",
   "RecordingStatus": "completed",
   "RecordingUrl": "https://recording.com/your-recording-url",
   "To": "+12132045020"
}

Status callback HTTP attributes

The attributes contained in the statusCallback request to your URL.

ATTRIBUTE	DESCRIPTION
`AccountSid`	A unique identifier for the account generating this call.
`CallSid`	A unique identifier for this call, generated by Telnyx.
`ParentCallSid`	A unique identifier for the parent call.
`CallStatus`	A descriptive status for the call. The value is one of `initiated`, `ringing`, `in-progress`, `completed`, `busy` or `canceled`.
`Timestamp`	The timestamp when the event was fired, given as UTC in RFC 2822 format.
`CallbackSource`	A string that describes the source of the webhook. This is provided to help disambiguate why the webhook was made. On Status Callbacks, this value is always `call-progress-events`.
`From`	The outbound caller number.
`To`	The inbound callee number.
`RecordingDuration`	Recording duration in seconds.
`RecordingUrl`	Url where the recording can be downloaded from.
`RecordingSid`	A unique identifier for the recording, generated by Telnyx.
`RecordingChannels`	1 for `mono-channel`, 2 for `dual-channel`
`RecordingStatus`	The staus for the recording. The value is one of `in-progress`, `completed` or `absent`.
`SequenceNumber`	A sequence number ordering the multiple callbacks received. First callback has the lowest, last callback the highest.

Conference

The <Dial> verb's <Conference> noun allows you to connect to a conference room. Much like how the <Number> noun allows you to connect to another phone number, the <Conference> noun allows you to connect to a named conference room and talk with the other callers who have also connected to that room. Conference is commonly used as a container for calls when implementing hold, transfer, and barge. If the specified conference name does not exist, a new conference will be created. More <Conference> attributes are coming soon.

Verb attributes

ATTRIBUTE	DESCRIPTION	OPTIONS	DEFAULT
`beep`	Specify whether a notification beep is played to the conference when a participant joins or leaves the conference. The participant joining the conference will never hear a beep.	`true`, `false`, `onEnter`, `onExit`	`true`
`muted`	Specify whether a participant is muted or not.	`true`, `false`	`false`
`startConferenceOnEnter`	Start the conference when a participant joins. If this is `false` and the participant joins a conference that has not started, they are muted and hear background music until a participant joins where `startConferenceOnEnter` is `true`. This is useful for implementing moderated conferences.	`true`, `false`	`true`
`endConferenceOnExit`	If a participant has this attribute set to `true`, then when that participant leaves, the conference ends and all other participants drop out. This is useful for implementing moderated conferences that bridge two calls and allow either call leg to continue executing TexML if the other hangs up.	`true`, `false`	`false`
`statusCallback`	A URL for Telnyx to send webhook requests to on each event specified in the `statusCallbackEvent` attribute.
`statusCallbackEvent`	The conference events for which Telnyx should a webhook on. Multiple events are separated by a space.	`start`, `end`, `join`, `leave`, `speaker`	None
`statusCallbackMethod`	HTTP request type Telnyx should use when requesting the `statusCallback` URL.	`GET`, `POST`	`POST`
`record`	The `record` attribute lets you record entire conference. When set to `record-from-start`, recording begins immediately after conference starts.	`record-from-start`, `do-not-record`	`do-not-record`
`recordBeep`	If enabled, a beep sound will be played at the start of a recording.	`true`, `false`	`true`
`recordingStatusCallback`	Optional URL that tells Telnyx where to make its `GET` or `POST` request when the recording is available.
`recordingStatusCallbackEvent`	The recording events for which Telnyx should a webhook on. Multiple events are separated by a space.	`in-progress`, `completed`, `absent`	`completed`
`recordingStatusCallbackMethod`	HTTP request type used for `recordingStatusCallback`.	`GET`, `POST`	`POST`
`recordingTimeout`	The number of seconds that Telnyx will wait for the recording to be stopped if silence is detected. The timer only starts when the speech is detected. Please note that the transcription is used to detect silence and the related charge will be applied.	Any integer greater than `0`. `0` for infinite	`0`
`trim`	Whether to trim any leading and trailing silence from the recording.	`trim-silence`, `do-not-trim`	`trim-silence`
`waitUrl`	A URL to an MP3 or WAV file that should be used for the conference's hold music before the conference starts. The URL can also return an XML document with instructions that will be executed while the call is waiting for the conference to start.

Example

<?xml version="1.0" encoding="UTF-8"?>
<Response>
  <Dial>
    <Conference>Room 1234</Conference>
  </Dial>
</Response>

Expected callbacks

If statusCallbackEvent are set you can expect the following webhooks.

join

{
   "AccountSid": "cb6cfbbc-eb00-41af-a3f3-0d7b32009e4b",
   "CallSid": "v2:r3Cj9j-Hx7NAZETtYpdgktVUYKhsc8D1mSmzY8_6r4HHZYViWIs6Fw",
   "CallSidLegacy": "v2:r3Cj9j-Hx7NAZETtYpdgktVUYKhsc8D1mSmzY8_6r4HHZYViWIs6Fw",
   "ConferenceSid": "58b4eda9-03de-4bee-9178-d0e10d83e519",
   "FriendlyName": "Room 1234",
   "From": "[email protected]",
   "SequenceNumber": "1",
   "StatusCallbackEvent": "participant-join",
   "Timestamp": "2021-04-28 22:51:29.993535Z",
   "To": "+12132045020"
}

leave

{
   "AccountSid": "cb6cfbbc-eb00-41af-a3f3-0d7b32009e4b",
   "CallSid": "v2:r3Cj9j-Hx7NAZETtYpdgktVUYKhsc8D1mSmzY8_6r4HHZYViWIs6Fw",
   "CallSidLegacy": "v2:r3Cj9j-Hx7NAZETtYpdgktVUYKhsc8D1mSmzY8_6r4HHZYViWIs6Fw",
   "ConferenceSid": "58b4eda9-03de-4bee-9178-d0e10d83e519",
   "FriendlyName": "Room 1234",
   "From": "[email protected]",
   "SequenceNumber": "3",
   "StatusCallbackEvent": "participant-leave",
   "Timestamp": "2021-04-28 22:51:47.114479Z",
   "To": "+12132045020"
}

end

{
   "AccountSid": "cb6cfbbc-eb00-41af-a3f3-0d7b32009e4b",
   "CallSid": "v2:0YXD2QVLtba0UDTe3k6H9gEsAEs4qRLsuy6u_zoS364PKR6DApuKuw",
   "CallSidLegacy": "v2:0YXD2QVLtba0UDTe3k6H9gEsAEs4qRLsuy6u_zoS364PKR6DApuKuw",
   "ConferenceSid": "58b4eda9-03de-4bee-9178-d0e10d83e519",
   "FriendlyName": "Room 1235",
   "From": "[email protected]",
   "SequenceNumber": "4",
   "StatusCallbackEvent": "conference-end",
   "Timestamp": "2021-04-28 22:51:51.480853Z",
   "To": "+12132045020"
}

speaker

{
   "AccountSid": "cb6cfbbc-eb00-41af-a3f3-0d7b32009e4b",
   "CallSid": "v2:0YXD2QVLtba0UDTe3k6H9gEsAEs4qRLsuy6u_zoS364PKR6DApuKuw",
   "CallSidLegacy": "v2:0YXD2QVLtba0UDTe3k6H9gEsAEs4qRLsuy6u_zoS364PKR6DApuKuw",
   "ConferenceSid": "58b4eda9-03de-4bee-9178-d0e10d83e519",
   "FriendlyName": "Room 1235",
   "From": "[email protected]",
   "SequenceNumber": "5",
   "StatusCallbackEvent": "participant-speech-start",
   "Timestamp": "2021-04-28 22:51:51.480853Z",
   "To": "+12132045020"
}

Status callback HTTP attributes

The attributes contained in the statusCallback request to your URL.

ATTRIBUTE	DESCRIPTION
`AccountSid`	A unique identifier for the account generating this call.
`CallSid`	A unique identifier for this call, generated by Telnyx.
`ConferenceSid`	A unique identifier for this conference, generated by Telnyx.
`FriendlyName`	Name given to the conference.
`From`	The outbound caller number.
`Timestamp`	The timestamp when the event was fired, given as UTC in RFC 2822 format.
`To`	The inbound callee number.
`SequenceNumber`	A sequence number ordering the multiple callbacks received. First callback has the lowest, last callback the highest.
`StatusCallbackEvent`	Event generating the callback.

Enqueue

The <Enqueue> verb enqueues current call in a call queue.

Verb Attributes

ATTRIBUTE	DESCRIPTION	OPTIONS	DEFAULT
`action`	Defines an absolute or relative URL used to send a request when the call leaves the queue. It will be sent right away when the call is dequeued using `<Leave>` verb. When call is dequeued using `<Dial>` verb, the request will be sent once the bridged calls disconnect.
`method`	HTTP request type used for `action`.	`GET`, `POST`	`POST`
`maxWaitTimeSecs`	Maximum time in seconds to wait in the queue.	`1`-`14400`	`14400`
`waitUrl`	Specifies the URL to the TeXML document that will be executed when the call is waiting in the queue. Once all the commands from the flow are executed, the waitUrl is re-requested, and the TeXML document is run once again. Verbs that are supported in the waitUrl TeXML document: `<Play>`, `<Say>`, `<Gather>`, `<Pause>`, `<Hangup>`, `<Redirect>`, `<Leave>`.
`waitUrlMethod`	HTTP request type used for `waitUrl`.	`GET`, `POST`	`POST`

Examples

<?xml version="1.0" encoding="UTF-8"?>
<Response>
    <Enqueue waitUrl="/wait_in_queue">TestQueue</Enqueue>
</Response>

<?xml version="1.0" encoding="UTF-8"?>
<Response>
    <Enqueue maxWaitTimeSecs="60" action="/dequeue_action">TestQueue</Enqueue>
</Response>

Gather

The <Gather> verb collects DTMF tones during a call. <Say> can be nested within <Gather> to create an interactive IVR with text-to-speech.

Verb attributes

ATTRIBUTE	DESCRIPTION	OPTIONS	DEFAULT
`action`	URL where TeXML will send the gathered digits. Same method (`GET`/`POST`) as set for the TexML application is used. Transfers control of the current call to the TeXML file returned.
`finishOnKey`	The set of digits, (0-9, *, #), that indicates the end of the gather.
`numDigits`	The number of digits to be gathered.
`minDigits`	Minimum number of digits to be gathered.	`1`-`128`	`1`
`maxDigits`	Maximum number of digits to be gathered.	`1`-`128`	`128`
`language`	The language used.	See RESTful API documentation	`en-US`
`timeout`	Time in seconds between digits before the `<Gather>` digits are sent to your `action` URL. Telnyx will wait until all nested verbs have been executed before beginning the `timeout` period.	`1`-`120`	`5`
`validDigits`	The set of valid digits for the gather action.
`invalidDigitsAction`	URL where TeXML will send the invalid gathered digits. Same method (`GET`/`POST`) as set for the TeXML application is used. Transfers control of the current call to the TeXML file returned.		`action`

Nouns

NOUN	DESCRIPTION
`<Say>`	Reads supplied text back to the caller.
`<Play>`	Plays an audio URL back to the caller.

Example

<?xml version="1.0" encoding="UTF-8"?>
<Response>
    <Gather action="/processdtmf.php" finishOnKey="*" timeout="20">
        <Say>Please press 1 for sales, or 2 for support. Press * to exit the menu.</Say>
    </Gather>
   <Say>We did not receive any input. Goodbye!</Say>
</Response>

Expected callbacks

action

{
    "AccountSid":"cb6cfbbc-eb00-41af-a3f3-0d7b32009e4b",
    "CallSid":"v2:DPNqxVjTNtQYaKdcKbU0QgRFrQ3YzuAQrVYC4Ggcuq7zTpDkUB7A4w",
    "CallSidLegacy":"v2:DPNqxVjTNtQYaKdcKbU0QgRFrQ3YzuAQrVYC4Ggcuq7zTpDkUB7A4w",
    "Digits":"1",
    "From":"[email protected]",
    "To":"+12132045020"
}

ATTRIBUTE	DESCRIPTION
`AccountSid`	A unique identifier for the account generating this call.
`CallSid`	A unique identifier for this call, generated by Telnyx.
`From`	The outbound caller number.
`To`	The inbound callee number.
`Digits`	The digits entered in the gather process by the callee.

Leave

The <Leave> verb removes a call from queue and continues with the next verb after the original <Enqueue>.

Verb Attributes

The <Leave> verb doesn't support any attributes.

Example

<?xml version="1.0" encoding="UTF-8"?>
<Response>
    <Leave />
</Response>

Hangup

The <Hangup> verb ends the current call. There are no attributes associated with <Hangup> and no nouns can be nested within it.

Example

<?xml version="1.0" encoding="UTF-8"?>
<Response>
    <Say>Support line is closed. Please try again tomorrow.</Say>
    <Hangup />
</Response>

Expected callbacks

completed

{
   "AccountSid": "cb6cfbbc-eb00-41af-a3f3-0d7b32009e4b",
   "CallDuration": "2",
   "CallSid": "v2:7V3r4VFCGLTzKLOveE0-7vM9dX17-NRQgU1byo-uuOIX9JcDadLLKw",
   "CallSidLegacy": "v2:7V3r4VFCGLTzKLOveE0-7vM9dX17-NRQgU1byo-uuOIX9JcDadLLKw",
   "CallStatus": "completed",
   "CallbackSource": "call-progress-events",
   "From": "+18445931290",
   "HangupSource": "callee",
   "SequenceNumber": "0",
   "Timestamp": "2021-04-28 21:51:18.731479Z",
   "To": "+13122010055"
}

Status callback HTTP attributes

The attributes contained in the statusCallback request to your URL.

ATTRIBUTE	DESCRIPTION
`AccountSid`	A unique identifier for the account generating this call.
`CallSid`	A unique identifier for this call, generated by Telnyx.
`CallStatus`	A descriptive status for the call. The value is one of `completed`, `busy` or `canceled`.
`Timestamp`	The timestamp when the event was fired, given as UTC in RFC 2822 format.
`CallbackSource`	A string that describes the source of the webhook. This is provided to help disambiguate why the webhook was made. On Status Callbacks, this value is always `call-progress-events`.
`From`	The outbound caller number.
`To`	The inbound callee number.
`SequenceNumber`	A sequence number ordering the multiple callbacks received. First callback has the lowest, last callback the highest.
`HangupSource`	Source of the hangup. The value can be `callee` or `caller`

HttpRequest

The <HttpRequest> verb sends a request to the external servers. It consists of 2 child nodes <Request> and <Response>

Request

The <Request> node defines all the attributes of the request. It can have 2 child nodes <Headers> and <Body>

Request attributes

ATTRIBUTE	DESCRIPTION	OPTIONS	DEFAULT
`url`	Url to send the request.	`http://example.com`
`method`	Method for the request (GET or POST)	`GET`	`GET`
`async`	Defines if TeXML process should wait for the request response. When it is set to false, the callback will be sent to action url, when the request is processed	`true`	`false`
`action`	Defines the action url that will be used to send the callback when the request is processed (only if async is set to false)	`http://example.com`

Example

<Response>
    <HttpRequest>
        <Request url="https://example.com" method="POST" async=”true”>
        <Headers>
            <Header>
                <Key>Authorization</Key>
                <Value>Bearer API_key</Value>
            </Header>
            <Header>
                <Key>Content-Type</Key>
                <Value>application/json</Value>
            </Header>
        </Headers>
        <Body>
        <![CDATA[
                {
                    "from":{{From}}
                }
                ]]>
        </Body>
        </Request>
    </HttpRequest>
</Response>

Response

The <Response> node allows assigning required parts of the response to the variables that will be passed to the action url. It will be triggered only if the async is set to false.

Example

<Response>
    <HttpRequest>
        <Request url="https://example.com" method="POST" async=”false”>
        ...
        </Request>
        <Response>
            <Type>JSON</Type>
            <StatusCode>200</StatusCode>
            <Content>
                <Field>
                    <Name>contact.name.first</Name>
                    <Value>first_name</Value>
                </Field>
                <Field>
                    <Name>contact.name.last</Name>
                    <Value>last_name</Value>
                </Field>
            </Content>
        </Response>
    </HttpRequest>
</Response>

Pause

The <Pause> verb waits silently for a specified number of seconds or one second by default. No nouns can be nested within <Pause> and a self-closing tag must be used.

Verb attributes

ATTRIBUTE	DESCRIPTION	OPTIONS	DEFAULT
`length`	Optional length of time in seconds to wait.	`1`-`180`	`1`

Example

<?xml version="1.0" encoding="UTF-8"?>
<Response>
    <Pause length="5"/>
</Response>

Play

The <Play> verb plays an MP3 or WAV audio file, that Telnyx fetches from the URL you configure, back to the caller.

<Play> can be used independently as a verb or nested within <Gather> as a noun to play an audio file while waiting for DTMF tones.

Verb attributes

ATTRIBUTE	DESCRIPTION	OPTIONS	DEFAULT
`loop`	The number of times between 1-100 to repeat the audio file.	`1`-`100`. `0` for infinite.	`1`

Example

<?xml version="1.0" encoding="UTF-8"?>
<Response>
  <Gather action="/processdtmf.php">
    <Play loop="10">http://www.example.com/sounds/greeting.wav</Play>
  </Gather>
</Response>

Record

The <Record> verb creates an audio file with the call audio. If a recordingStatusCallback, Telnyx will deliver the URL for the recording to that address once the call has ended. Recording URLs are valid for 10 minutes after the call has ended. All recordings are also available via the Telnyx Mission Control Portal.

Verb attributes

ATTRIBUTE	DESCRIPTION	OPTIONS	DEFAULT
`action`	Optional URL where TeXML will make a request to when the `<Record>` ends to retrieve a new set of TeXML instructions to continue the call flow sent with additional request parameters.
`method`	HTTP request type used to retrieve the next set of instructions.	`GET`, `POST`	`POST`
`finishOnKey`	Set of digits specified together, any one of which will end the recording.	Any digit, `#`, `*`	`1234567890*#`
`playBeep`	Whether or not a sound is played before the start of a recording.	`true`, `false`	`true`
`maxLength`	Defines the maximum length for the recording in seconds.	`0`-`14400`, `0` for infinite	`0`
`channels`	When using `dual` channels, final audio file will be stereo recorded with the first leg on channel A, and the rest on channel B.	`dual`, `mono`	`dual`
`recordingStatusCallback`	Optional URL that tells Telnyx where to make its `GET` or `POST` request when the recording is available.
`recordingStatusCallbackMethod`	HTTP request type used for `recordingStatusCallback`.	`GET`, `POST`	`POST`
`timeout`	The number of seconds that Telnyx will wait for the recording to be stopped if silence is detected. The timer only starts when the speech is detected. Please note that the transcription is used to detect silence and the related charge will be applied.	Any integer greater than `0`. `0` for infinite	`0`
`trim`	Will remove silence from the beginning and end of the recording when set to `trim-silence`.	`trim-silence`

Additional action parameters

recordingStatusCallback will be used to deliver the final URL and information on the call recording. If available TeXML will also send recording information along with the request to the action URL with the following parameters:

ATTRIBUTE	DESCRIPTION
`RecordingURL`	The URL of the recorded audio. The recording file may not yet be accessible when the `action` callback is sent. Use `recordingStatusCallback` for reliable notification on when the recording is available for access.
`RecordingDuration`	The duration of the recorded audio (in seconds). To get a final accurate recording duration after any trimming of silence, use `recordingStatusCallback`.
`Digits`	The key (if any) pressed to end the recording or `hangup` if the caller hung up.

Example

<?xml version="1.0" encoding="UTF-8"?>
<Response>
    <Record action="/recordingfinish.php" recordingStatusCallback="https://wwww.foo.com/recording-storage/" playBeep="true" finishOnKey="*9"/>
    <Say>
        You reached Telnyx Sales voicemail.
        Please leave a message after the beep.
        Press the pound key when finished.
    </Say>
</Response>

Redirect

The <Redirect> verb transfers control of the current call to another TeXML application. This is useful to create a tree structure of TeXML files for different applications. No nouns can be nested within <Redirect>.

Verb attributes

ATTRIBUTE	DESCRIPTION	OPTIONS	DEFAULT
`method`	The type of requested used `<Redirect>` URL.	`GET`, `POST`	`POST`

Example

<?xml version="1.0" encoding="UTF-8"?>
<Response>
    <Redirect>http://www.example.com/TeXML/redirect.xml</Redirect>
</Response>

Refer

The <Refer> verb in Telnyx allows you to transfer a phone call to another SIP infrastructure during a TeXML call. You can initiate it at any point during the call. When you use the <Refer> verb, Telnyx will replace the original call with a new call to the external system you specify, effectively transferring the call to that system.

Verb attributes

ATTRIBUTE	DESCRIPTION	OPTIONS	DEFAULT
`action`	Optional URL where TeXML will make a request to when the `<Refer>` verb ends, to retrieve a new set of TeXML instructions to continue the call flow.
`method`	HTTP request type used to retrieve the next set of instructions.	`GET`, `POST`	`POST`

Example

<?xml version="1.0" encoding="UTF-8"?>
<Response>
    <Refer>
        <Sip>sip:[email protected]</Sip>
    </Refer>
</Response>

Expected callbacks

If action is set you can expect the following webhook when the <Refer> verb finishes. New set of TeXML instructions should be returned in response.

{
  "AccountSid": "6d547b4f-993a-4e87-b95c-2d9460b3824b",
  "CallSid": "v3:wf0h6MLq0PIHItrkFyEPM0WLPAarG_fUA2MLQqkLYRhRRrCqnT6TPg",
  "CallSidLegacy": "v3:wf0h6MLq0PIHItrkFyEPM0WLPAarG_fUA2MLQqkLYRhRRrCqnT6TPg",
  "ReferCallStatus": "in-progress",
  "ReferSipResponseCode": "202",
  "NotifySipResponseCode": "200",
  "Timestamp": "2021-04-28 21:51:13.591099Z"
}

Action callback HTTP attributes

The attributes contained in the action request to your URL.

ATTRIBUTE	DESCRIPTION
`AccountSid`	A unique identifier for the account generating this call.
`CallSid`	A unique identifier for this call, generated by Telnyx.
`ReferCallStatus`	Provides new call status based on SIP NOTIFY messages. May be omitted if REFER fails or no NOTIFY requests are received. Possible values: `in-progress`, `busy`, `canceled`, `failed`
`ReferSipResponseCode`	This indicates the SIP response code that Telnyx receives from the SIP endpoint in response to the REFER request.
`NotifySipResponseCode`	Reflects final SIP response code on referred leg, based on NOTIFY messages. May be omitted if REFER fails or no NOTIFY requests are received.
`Timestamp`	The timestamp when the event was fired, given as UTC in RFC 2822 format.

Reject

The <Reject> verb rejects a call to your Telnyx number. It is effectively an exit statement from the current document, as there is no way to return to any instructions listed after the <Reject> verb. If placed as the very first verb in an incoming call, <Reject> will prevent the call from being answered and will incur no cost. If placed elsewhere in the call, the call will hang up but will be charged up to that point.

You can't nest any verbs within <Reject> and you can't nest <Reject> in any other verbs.

Verb attributes

ATTRIBUTE	DESCRIPTION	OPTIONS	DEFAULT
`reason`	The tone to play to indicate the reason the call was rejected.	`rejected`, `busy`	`rejected`

Example

<?xml version="1.0" encoding="UTF-8"?>
<Response>
    <Reject />
</Response>

Say

The <Say> verb speaks the text specified back to the caller enabling text to speech for any application.

Verb attributes

ATTRIBUTE	DESCRIPTION	OPTIONS	DEFAULT
`voice`	Optional text-to-speech voice type. For `basic` text-to-speech use `man` or `woman`. For `premium` text-to-speech including additional language accent support beyond `en-US`, use `alice` or prescribe a specific Amazon Polly voice in the form of `Polly.*`. All standard Amazon Polly voices are supported, e.g. `Polly.Joanna`.	`man`, `woman`, `alice`, `Polly.*`	`man`
`language`	ISO language type to be used if voice type `alice` is selected. If `man` or `woman` is selected, the language accent will always be `en-US`. This parameter is ignored when a specific Amazon Polly voice is used.	See RESTful API documentation	`en-US`
`loop`	The number of times to repeat the speech.	`1`-`100`. `0` for infinite.	`1`

Example

<?xml version="1.0" encoding="UTF-8"?>
<Response>
    <Say voice="alice">This is a premium Amazon Polly text-to-speech message!</Say>
</Response>

Stream

The <Stream> instruction starts streaming the media from a call to a specific WebSocket address in near-realtime. Audio will be delivered as base64-encoded RTP payloads (no headers), wrapped in JSON payloads. When used with <Start> verb it starts asynchronous stream to your websocket destination url. For synchronous bi-directional stream please use <Connect> verb.

<Stream> Attributes

ATTRIBUTE	DESCRIPTION	OPTIONS	DEFAULT
`url`	The destination WebSocket address where the stream is going to be delivered.
`track`	Specifies which track should be streamed.	`inbound_track`, `outbound_track`, `both_tracks`	`inbound_track`

Examples

<?xml version="1.0" encoding="UTF-8"?>
<Response>
  <Start>
    <Stream url="wss://yourdomain.com/stream" track=”both_tracks” />
  </Start>
</Response>

Suppression

The <Suppression> instruction starts noise suppression on the call to improve audio quality.

<Suppression> Attributes

ATTRIBUTE	DESCRIPTION	OPTIONS	DEFAULT
`direction`	Specifies which side of the audio shall be denoised.	`inbound`, `outbound`, `both`	`inbound`

Examples

<?xml version="1.0" encoding="UTF-8"?>
<Response>
  <Start>
    <Suppression direction="both" />
  </Start>
</Response>

Transcription

The <Transcription> instruction starts real-time transcription on the call.

<Transcription> Attributes

ATTRIBUTE	DESCRIPTION	OPTIONS	DEFAULT
`interimResults`	Whether to send also interim results. If set to `false`, only final results will be sent. Applies to transcriptionEngine `A` only.	`true`, `false`	`false`
`language`	Language to use for speech recognition.	`de`, `en`, `es`, `fr`, `it`, `pl`	`en`
`transcriptionEngine`	Engine to use for speech recognition.	`A` - `google`, `B` - `telnyx`	`A`
`transcriptionTracks`	Indicates which leg of the call will be transcribed. Use `inbound` for the leg that requested the transcription, `outbound` for the other leg, and `both` for both legs of the call.	`inbound`, `outbound`, `both`	`inbound`
`transcriptionCallback`	URL that tells Telnyx where to make its `GET` or `POST` requests with transcription data.
`transcriptionCallbackMethod`	HTTP request type used for `transcriptionCallback`	`GET`, `POST`	`POST`

Examples

<?xml version="1.0" encoding="UTF-8"?>
<Response>
  <Start>
    <Transcription language="en" interimResults="true" transcriptionCallback="/transcription" />
  </Start>
</Response>

Stop

The <Stop> verb stops specified by noun instruction on a call.

Nouns

NOUN	DESCRIPTION
`<Stream>`	Stops current media stream, no attributes need to be provided
`<Transcription>`	Stops current transcription, no attributes need to be provided
`<Suppression>`	Stops current suppression, no attributes need to be provided

Examples

<?xml version="1.0" encoding="UTF-8"?>
<Response>
  <Stop>
    <Stream />
  </Stop>
</Response>

Overview

How TeXML translator works​

TeXML syntax​

Dynamic parameters​

Inserting dynamic content​

Iterate through lists​

Render conditional content​

Response​

Verbs​

Voice verbs​

Nouns​

Additional request parameters​

Data formats​

Dates and times​

Phone numbers​

Dial​

Verb Attributes​

Nouns​

Noun attributes​

Simultaneous dialing​

Examples​

Expected callbacks​

Status callback HTTP attributes​

Conference​

Verb attributes​

Example​

Expected callbacks​

Status callback HTTP attributes​

Enqueue​

Verb Attributes​

Examples​

Gather​

Verb attributes​

Nouns​

Example​

Expected callbacks​

Leave​

Verb Attributes​

Example​

Hangup​

Example​

Expected callbacks​

Status callback HTTP attributes​

HttpRequest​

Request​

Request attributes​

Example​

Response​

Example​

Pause​

Verb attributes​

Example​

Play​

Verb attributes​

Example​

Record​

Verb attributes​

Additional action parameters​

Example​

Redirect​

Verb attributes​

Example​

Refer​

Verb attributes​

Example​

Expected callbacks​

Action callback HTTP attributes​

Reject​

Verb attributes​

Example​

Say​

Verb attributes​

Example​

Stream​

Examples​

Suppression​

Examples​

Transcription​

Examples​

Stop​

How TeXML translator works

TeXML syntax

Dynamic parameters

Inserting dynamic content

Iterate through lists

Render conditional content

Response

Verbs

Voice verbs

Nouns

Additional request parameters

Data formats

Dates and times

Phone numbers

Dial

Verb Attributes

Nouns

Noun attributes

Simultaneous dialing

Examples

Expected callbacks

Status callback HTTP attributes

Conference

Verb attributes

Example

Expected callbacks

Status callback HTTP attributes

Enqueue

Verb Attributes

Examples

Gather

Verb attributes

Nouns

Example

Expected callbacks

Leave

Verb Attributes

Example

Hangup

Example

Expected callbacks

Status callback HTTP attributes

HttpRequest

Request

Request attributes

Example

Response

Example

Pause

Verb attributes

Example

Play

Verb attributes

Example

Record

Verb attributes

Additional action parameters

Example

Redirect

Verb attributes

Example

Refer

Verb attributes

Example

Expected callbacks

Action callback HTTP attributes

Reject

Verb attributes

Example

Say

Verb attributes

Example

Stream

Examples

Suppression

Examples

Transcription

Examples

Stop

Nouns