---
title: "Can I connect my employees' iPhones to our office phone system?"
topic: "Business & Teams"
updated: 2026-07-09
canonical: https://acrobits.net/resources/knowledge-base/can-i-connect-my-employees-iphones-to-our-office-phone-syste/
summary: "Yes. If your office phone system is SIP-based, including hosted PBX, on-premise Asterisk/FreeSWITCH, 3CX, or FreePBX, employee iPhones can be connected as SIP extensions. Each iPhone runs a softphone app that signs in with the employee's SIP credentials and connects to your PBX. Small teams can each install a retail app like Groundwire; operators deploying to dozens or hundreds can push a branded app with Cloud Softphone."
---

# Can I connect my employees' iPhones to our office phone system?

> Yes. If your office phone system is SIP-based, including hosted PBX, on-premise Asterisk/FreeSWITCH, 3CX, or FreePBX, employee iPhones can be connected as SIP extensions. Each iPhone runs a softphone app that signs in with the employee's SIP credentials and connects to your PBX. Small teams can each install a retail app like Groundwire; operators deploying to dozens or hundreds can push a branded app with Cloud Softphone.

# Can I connect my employees' iPhones to our office phone system?

Yes. If your office phone system is SIP-based, including hosted PBX, on-premise Asterisk/FreeSWITCH, 3CX, or FreePBX, employee iPhones can be connected as SIP extensions. Each iPhone runs a softphone app that signs in with the employee's SIP credentials and connects to your PBX. Small teams can each install a retail app like Groundwire; operators deploying to dozens or hundreds can push a branded app with Cloud Softphone.

## For small teams: Groundwire for self-setup

**Groundwire** ($9.99 one-time per device, iOS and Android) is a retail SIP softphone. Each employee downloads and installs the app, then enters their SIP extension credentials. Setup takes a few minutes per person. Groundwire uses CallKit so calls appear on the native iPhone call screen, and SIPIS push so calls can ring even when the app is closed.

  - No subscription, no per-seat fees: one-time purchase per device.

  - Works with [3CX](/resources/knowledge-base/can-i-use-a-third-party-softphone-with-3cx/), FreePBX, Asterisk, NetSapiens, BroadWorks, and other SIP platforms.

  - Each employee self-configures their own SIP credentials.

## For larger deployments: Cloud Softphone for provisioning at scale

If you're an operator, MSP, or telecoms provider deploying to dozens or hundreds of employees, **Cloud Softphone** provides:

  - **[Server-side provisioning](/resources/knowledge-base/provision-softphone-hundreds-users/).** Push SIP credentials and settings to all devices without per-device manual configuration. QR code enrollment and MDM integration are supported.

  - **Branded app.** Your company name and logo in the App Store and Google Play, so employees see your brand.

  - **Operator analytics.** These can include registration success rates, call quality metrics, and usage data across your fleet.

  - **Broad SIP feature set.** Transfer, conferencing, call recording, voicemail, and do-not-disturb, controlled server-side.

## Which option fits your team size?

  - **1–20 employees, any SIP PBX:** Groundwire: low friction, no setup overhead.

  - **20+ employees, or you need a branded app:** Cloud Softphone: provisioning at scale, full branding control.

**For small teams:** [Download Groundwire](/sip-client-ios-android/). **For larger deployments:** [Learn about Cloud Softphone](/cloud-softphone/) or [contact us](/softphone-demo/).

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