Make a call from a BlackBerry device application (single-line environment)

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Import the required classes and interfaces.

import net.rim.blackberry.api.invoke.Invoke;
import net.rim.blackberry.api.invoke.PhoneArguments;

Create an instance of the PhoneArguments class, passing in the ARG_CALL field, and the destination phone number.
```
PhoneArguments call = new PhoneArguments(PhoneArguments.ARG_CALL, "519-555-0100");
```
Invoke Invoke.invokeApplication() to open the phone application from your application, providing the APP_TYPE_PHONE field, and the PhoneArguments instance.
```
Invoke.invokeApplication(Invoke.APP_TYPE_PHONE, call);
```
Check for IllegalArgumentException.

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