---
title: "openConnection(_:withPageTimeout:authenticationRequired:)"
framework: IOBluetooth
role: symbol
role_heading: Instance Method
path: "iobluetooth/iobluetoothdevice/openconnection(_:withpagetimeout:authenticationrequired:)"
---

# openConnection(_:withPageTimeout:authenticationRequired:)

Create a baseband connection to the device.

## Declaration

```swift
func openConnection(_ target: Any!, withPageTimeout pageTimeoutValue: BluetoothHCIPageTimeout, authenticationRequired: Bool) -> IOReturn
```

## Parameters

- `target`: The target to message when the create connection call is complete
- `pageTimeoutValue`: The page timeout value to use for this call
- `authenticationRequired`: BOOL value to indicate whether authentication should be required for the connection

## Return Value

Return Value Returns kIOReturnSuccess if the connection was successfully created (or if asynchronous, if the CREATE_CONNECTION command was successfully issued).

## Discussion

Discussion If a target is specified, the open connection call is asynchronous and on completion of the CREATE_CONNECTION command, the method -connectionComplete:status: will be called on the specified target. If no target is specified, the call is synchronous and will not return until the connection is open or the CREATE_CONNECTION call has failed. NOTE: This method is only available in macOS 10.2.7 (Bluetooth v1.3) or later. As of OS X 10.7, this method will no longer mask out “Connection Exists” ‘errors’ with a success result code; your code must account for the cases where the baseband connection is already open.