This is the new *CloudFormation Template Reference Guide*. Please update your bookmarks and links. For help getting started with CloudFormation, see the [AWS CloudFormation User Guide](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/Welcome.html).

# AWS::Lex::Bot DTMFSpecification
<a name="aws-properties-lex-bot-dtmfspecification"></a>

Specifies the DTMF input specifications.

## Syntax
<a name="aws-properties-lex-bot-dtmfspecification-syntax"></a>

To declare this entity in your CloudFormation template, use the following syntax:

### JSON
<a name="aws-properties-lex-bot-dtmfspecification-syntax.json"></a>

```
{
  "[DeletionCharacter](#cfn-lex-bot-dtmfspecification-deletioncharacter)" : String,
  "[EndCharacter](#cfn-lex-bot-dtmfspecification-endcharacter)" : String,
  "[EndTimeoutMs](#cfn-lex-bot-dtmfspecification-endtimeoutms)" : Integer,
  "[MaxLength](#cfn-lex-bot-dtmfspecification-maxlength)" : Integer
}
```

### YAML
<a name="aws-properties-lex-bot-dtmfspecification-syntax.yaml"></a>

```
  [DeletionCharacter](#cfn-lex-bot-dtmfspecification-deletioncharacter): String
  [EndCharacter](#cfn-lex-bot-dtmfspecification-endcharacter): String
  [EndTimeoutMs](#cfn-lex-bot-dtmfspecification-endtimeoutms): Integer
  [MaxLength](#cfn-lex-bot-dtmfspecification-maxlength): Integer
```

## Properties
<a name="aws-properties-lex-bot-dtmfspecification-properties"></a>

`DeletionCharacter`  <a name="cfn-lex-bot-dtmfspecification-deletioncharacter"></a>
The DTMF character that clears the accumulated DTMF digits and immediately ends the input.  
*Required*: Yes  
*Type*: String  
*Pattern*: `^[A-D0-9#*]{1}$`  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`EndCharacter`  <a name="cfn-lex-bot-dtmfspecification-endcharacter"></a>
The DTMF character that immediately ends input. If the user does not press this character, the input ends after the end timeout.  
*Required*: Yes  
*Type*: String  
*Pattern*: `^[A-D0-9#*]{1}$`  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`EndTimeoutMs`  <a name="cfn-lex-bot-dtmfspecification-endtimeoutms"></a>
How long the bot should wait after the last DTMF character input before assuming that the input has concluded.  
*Required*: Yes  
*Type*: Integer  
*Minimum*: `1`  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`MaxLength`  <a name="cfn-lex-bot-dtmfspecification-maxlength"></a>
The maximum number of DTMF digits allowed in an utterance.  
*Required*: Yes  
*Type*: Integer  
*Minimum*: `1`  
*Maximum*: `1024`  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)