# VoIP, VPN, and the Build System Behind Them

DevFeed: [VoIP, VPN, and the Build System Behind Them](<https://devfeed.tech/articles/voip-vpn-and-the-build-system-behind-them-19665.md>)

Original publisher: [Read original article](<https://www.codenameone.com/blog/voip-vpn-builders/>)

Author: Shai Almog

Published: 2026-09-04T00:00:00Z

Content type: article

Language: en

Sources: [CodeName One](<https://devfeed.tech/sources/codename-one.md>)

Topics: [Virtual Private Network](<https://devfeed.tech/topics/vpn.md>), [cross-platform](<https://devfeed.tech/topics/cross-platform.md>), [API](<https://devfeed.tech/topics/api.md>), [iOS](<https://devfeed.tech/topics/ios.md>), [Android](<https://devfeed.tech/topics/android.md>), [Java](<https://devfeed.tech/topics/java.md>), [Framework](<https://devfeed.tech/topics/framework.md>), [Extension](<https://devfeed.tech/topics/extension.md>)

Tags: [android](<https://devfeed.tech/tags/android.md>), [apis](<https://devfeed.tech/tags/apis.md>), [build](<https://devfeed.tech/tags/build.md>), [build-system](<https://devfeed.tech/tags/build-system.md>), [extension](<https://devfeed.tech/tags/extension.md>), [integration](<https://devfeed.tech/tags/integration.md>), [java](<https://devfeed.tech/tags/java.md>), [native](<https://devfeed.tech/tags/native.md>), [packages](<https://devfeed.tech/tags/packages.md>), [platform](<https://devfeed.tech/tags/platform.md>), [signing](<https://devfeed.tech/tags/signing.md>), [vpn](<https://devfeed.tech/tags/vpn.md>)

## AI overview

Codename One adds native call-management and VPN APIs for iOS and Android. Its builders generate the required platform services, frameworks, permissions, delegates, and separately signed extension targets based on the Java packages an application uses.

## Source excerpt

Codename One adds native call management and VPN APIs, while its builders generate the platform services, frameworks, permissions, and extension plumbing only when an application uses them.