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Alexa.ChannelController Interface (VSK Fire TV)

When users say utterances to change the channel (e.g., "Alexa, change the channel to PBS"), the Alexa.ChannelController interface sends ChannelChange directives to indicate that the channel should be changed. These directives are sent when users specify the channel name, call sign, or channel number.

Utterances for ChannelController Directives

Alexa sends a ChannelChange directive through the ChannelController interface to your Lambda when users say the following utterances.

Feature Sample Utterances Expected Response
Go to channel name

Go to Fox

start seite <channel>

Schalte auf <channel>

mets fox

mets la chaîne

change à radio canada

vai sulla fox

cambia sulla fox

cambiar al canal

cambia a Fox

cambia a t.v. Azteca

cámbiale a t.v. Azteca

{channel} に行って

{channel} を開いて

vá para t.v. globo

ir para t.v. globo

{channel name} पे जाओ

go to {channel name}

The view switches to the channel name, and content from the channel plays.

Go to channel number

Go to channel thirteen

Schalte auf <channel number>

Schalte auf Kanal/Sender <channel number>

mets la 5

vas sur la 5

mets le 10

vas au 10

vai al canale 13

cambia sul canale 13

ve al canal 13

cambia al canal 13

ve al canal 13

cambia al canal 13

チャンネル {channel number} に行って

チャンネル {channel number} を開いて

vá para o canal cinco

ir para o canal cinco

channel thirteen पे जाओ

go to channel thirteen

The view switches to the channel number, and content from the channel plays.

Go to channel callsign

Go to channel k. c. p. q.

Schalte auf <channel callsign>

Umschalten auf <channel callsign>

mets la chaîne {channel code}

vas sur la chaîne {channel code}

mets {channel code}

vas à {channel code}

vai al canale {code}

cambia sul canale {code}

cambia al canal {channel code}

ve al canal {channel code}

cambia al canal {channel code}

ve al canal {channel code}

チャンネル {channel callsign} を開いて

チャンネル {channel callsign} に行って

vá para o {channel callsign}

ir para o <channel callsign}

The view switches to the channel callsign, and content from the channel plays.

Watch channel name

Watch fox

Zeige <channel name>

<channel name> anschauen

je veux voir/regarder fox

joue radio canada

fais jouer radio canada

vai sulla fox

cambia sulla fox

pon Fox

(quiero) ver Fox

pon t.v. Azteca

ponme t.v. Azteca

{channel name}を再生して

{channel name}を見せて

assistir a t.v. globo

assista a t.v. globo

{channel name} चलाओ

{channel name} लगाओ

The view switches to the channel name, and content from the channel plays.

Watch channel number

Watch channel thirteen

Zeige Kanal/Sender <channel number>

Kanal/Sender <channel number> anschauen

mets la 5

je veux voir/regarder la 5

mets le (canal) 10

va au/sur le

vai al canale 13

cambia sul canale 13

pon el canal 13

(quiero) ver el canal 13

mets le 10

mets le canal 10

チャンネル {channel number} を見せて

{channel number} チャンネル を見せて

assistir canal cinco

assista canal cinco

channel thirteen चलाओ

watch channel thirteen

The view switches to the channel number, and content from the channel plays.

Handling ChannelChange Directives

The ChannelChange directive allows customers to tune to a specific channel using voice commands. When users say "Alexa, tune to CNN," you receive a ChannelChange directive in your Lambda. You then need to change the live TV stream to show the user the correct channel.

To help you understand which directive corresponds with which channel, we have provided a list of possible callsigns for each channel in Channels List.

If you'd like to support additional channels not included in this list, reach out to your Amazon contact, and he or she will coordinate with the right people to get you the information you need on how to handle it.

Alternatively, try asking your Alexa-enabled device to change the channel to whichever channel you like, and then observe the directive received in your Lambda log to check the callsign for yourself. However, it's still best if you flag those channels to your Amazon contact so we can know to prioritize that channel in our voice models. The channel callsign will be available within the callSign field within the channel change directive's payload.

You will not receive information about local channels in the directives — just top level names and callsigns, such as "ABC." It is up to you to perform any localization for your users.

ChannelChange Example

The following is an example ChangeChannel directive:

{
  "directive": {
    "header": {
      "namespace": "Alexa.ChannelController",
      "name": "ChangeChannel",
      "messageId": "abc-123-def-456",
      "correlationToken": "dFMb0z+PgpgdDmluhJ1LddFvSqZ/jCc8ptlAKulUj90jSqg==",
      "payloadVersion": "3"
    },
    "endpoint": {
      "scope": {
        "type": "BearerToken",
        "token": "access-token-from-skill"
      },
      "endpointId": "device-001",
      "cookie": {

      }
    },
    "payload": {
      "channel": {
          "number": "1234",
          "callSign": "KSTATION1",
          "affiliateCallSign": "KSTATION2",
          "uri": "someUrl"
      },
      "channelMetadata": {
          "name": "Alternate Channel Name",
          "image": "urlToImage"
      }
    }
  }
}

Payload Details

Field Description Type Required
channel Describes a channel. object Yes
channel.number A number that identifies the specified channel such as 5 or 12.1 string No,
but channel.number, channelMetadata.name, channel.callSign,
affiliateCallSign or uri must be specified.
channel.callSign Specifies a channel by call sign such as PBS. string No,
but channel.number, channelMetadata.name, channel.callSign,
affiliateCallSign or uri must be specified.
channel.affiliateCallSign Specifies a channel by local affiliate call sign such as KCTS9. string No,
but channel.number, channelMetadata.name, channel.callSign,
channel.affiliateCallSign or channel.uri must be specified.
channel.uri The URI of the channel such as "entity://provider/channel/12307" string No,
but channel.number, channelMetadata.name, channel.callSign,
channel.affiliateCallSign or channel.uri must be specified.
channelMetadata Provides additional information about the specified channel. object No
channelMetadata.name Another value that identifies the channel such as "FOX". string No,
but channel.number, channelMetadata.name, channel.callSign,
channel.affiliateCallSign or channel.uri must be specified.
channelMetadata.image A URL to an image that describes the channel. string No

Response Example

You must send an Response event if a request to change channels was successful. The response should include a context object that reports the channel after the request completes.

{
  "context": {
    "properties": [
      {
        "namespace": "Alexa.ChannelController",
        "name": "channel",
        "value": {
          "number": "1234",
          "callSign": "callsign1",
          "affiliateCallSign": "callsign2"
        },
        "timeOfSample": "2017-02-03T16:20:50.52Z",
        "uncertaintyInMilliseconds": 0
      }
    ]
  },
  "event": {
    "header": {
      "messageId": "abc-123-def-456",
      "correlationToken": "dFMb0z+PgpgdDmluhJ1LddFvSqZ/jCc8ptlAKulUj90jSqg==",
      "namespace": "Alexa",
      "name": "Response",
      "payloadVersion": "3"
    },
    "endpoint":{
      "endpointId":"appliance-001"
    },
    "payload":{ }
 }
}

Error Response

If you cannot complete the customer request for some reason, reply with an error. See Error Handling for more details.