---
title: "What softphone works with Metaswitch?"
topic: "White-Label / Wholesale"
updated: 2026-06-30
canonical: https://acrobits.net/resources/knowledge-base/what-softphone-works-with-metaswitch/
summary: "Cloud Softphone by Acrobits connects to Metaswitch over standard SIP, surfacing native Metaswitch features (presence, voicemail, call handling) inside a branded app on iOS, Android, and desktop. SIPIS push infrastructure handles reliable background call delivery, and because Cloud Softphone works with any SIP-compliant softswitch, the subscriber app survives a backend migration with no rebuild."
---

# What softphone works with Metaswitch?

> Cloud Softphone by Acrobits connects to Metaswitch over standard SIP, surfacing native Metaswitch features (presence, voicemail, call handling) inside a branded app on iOS, Android, and desktop. SIPIS push infrastructure handles reliable background call delivery, and because Cloud Softphone works with any SIP-compliant softswitch, the subscriber app survives a backend migration with no rebuild.

# What Softphone Works with Metaswitch?

Yes. **Cloud Softphone** by Acrobits connects to Metaswitch over standard [SIP](/voip-glossary/sip/) and surfaces the Metaswitch feature set inside a branded app. It runs on iOS, Android, and desktop, and registers against your Metaswitch platform like any compliant SIP client, so there is no Metaswitch-side custom development needed to get subscribers connected.

## How Cloud Softphone connects to Metaswitch

  - **Standard SIP registration.** Cloud Softphone registers as a SIP endpoint against Metaswitch. No switch-side integration project is required to bring users online.

  - **Native feature support.** Presence, voicemail, and Metaswitch call features such as transfer, hold, and call handling surface inside the app, not just basic dial tone.

  - **Reliable background calling via [SIPIS](/voip-glossary/sipis/).** Acrobits' SIPIS infrastructure has handled mobile push delivery since 2009, so iOS and Android subscribers receive calls even when the app is in the background.

  - **One identity across devices.** The same subscriber account works on iOS, Android, and desktop.

## Cloud Softphone survives a backend migration

Cloud Softphone works with any SIP-compliant softswitch, so the subscriber app keeps working if you migrate off Metaswitch. There is no app rebuild and no app store re-submission tied to the switch, which keeps a platform change invisible to your subscribers.

If your question is which mobile app to standardize on and brand as your own, see [what softphone mobile app works best with Metaswitch](/resources/knowledge-base/what-softphone-mobile-app-works-best-with-metaswitch/).

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