---
title: NIDLTDOAConfiguration
framework: nearbyinteraction
role: symbol
role_heading: Class
path: nearbyinteraction/nidltdoaconfiguration
---

# NIDLTDOAConfiguration

A configuration that enables Downlink Time-Difference-of-Arrival ranging.

## Declaration

```swift
class NIDLTDOAConfiguration
```

## Overview

Overview Run an instance of this configuration to participate in a session that supports the Downlink Time-Difference-of-Arrival (DL-TDOA) feature. Before creating an instance of this class, call supportsDLTDOAMeasurement first to ensure device support.

## Topics

### Creating a configuration

- [init(networkIdentifier:)](nearbyinteraction/nidltdoaconfiguration/init(networkidentifier:).md)
- [init(networkIdentifier:discoveryMethod:)](nearbyinteraction/nidltdoaconfiguration/init(networkidentifier:discoverymethod:).md)

### Identifying the network

- [networkIdentifier](nearbyinteraction/nidltdoaconfiguration/networkidentifier.md)

### Specifing the discovery method

- [discoveryMethod](nearbyinteraction/nidltdoaconfiguration/discoverymethod-swift.property.md)
- [NIDLTDOAConfiguration.DiscoveryMethod](nearbyinteraction/nidltdoaconfiguration/discoverymethod-swift.enum.md)

## Relationships

### Inherits From

- [NIConfiguration](nearbyinteraction/niconfiguration.md)

### Conforms To

- [CVarArg](swift/cvararg.md)
- [CustomDebugStringConvertible](swift/customdebugstringconvertible.md)
- [CustomStringConvertible](swift/customstringconvertible.md)
- [Equatable](swift/equatable.md)
- [Hashable](swift/hashable.md)
- [NSCoding](foundation/nscoding.md)
- [NSCopying](foundation/nscopying.md)
- [NSObjectProtocol](objectivec/nsobjectprotocol.md)
- [NSSecureCoding](foundation/nssecurecoding.md)
- [Sendable](swift/sendable.md)
- [SendableMetatype](swift/sendablemetatype.md)