plugin.xml

<?xml version='1.0' encoding='utf-8'?>
<plugin id="com.nikola-breznjak.voippush" version="1.0.2" xmlns="http://apache.org/cordova/ns/plugins/1.0" xmlns:android="http://schemas.android.com/apk/res/android">
    <name>VoIPPushNotification</name>
    <js-module name="VoIPPushNotification" src="www/VoIPPushNotification.js">
        <clobbers target="VoIPPushNotification" />
    </js-module>

    <platform name="ios">
        <config-file target="config.xml" parent="/*">
            <feature name="VoIPPushNotification">
                <param name="ios-package" value="VoIPPushNotification" />
            </feature>
        </config-file>
        <config-file target="*-Info.plist" parent="UIBackgroundModes">
            <array>
                <string>fetch</string>
                <string>remote-notification</string>
                <string>voip</string>
            </array>
        </config-file>
        <header-file src="src/ios/VoIPPushNotification.h" />
        <source-file src="src/ios/VoIPPushNotification.m" />

        <framework src="PushKit.framework" />
    </platform>
</plugin>