Exclusively for all VTX IP PBX customers: Wi-Fi or data plan required! Direct Dialing, NO PINS, NO access numbers! VTX VoIP turns your iPhone or iPad into a business line or company extension!

- Dial and answer inter-office extension calls from worldwide for free, and make calls showing your company caller ID.

- Make cheap calls from anywhere to anywhere in the world with your existing VTX service plan.

- Initiate conference calls (up to 10 parties)

- Transfer calls to another extension (worldwide) or another phone number

- voicemail shortcut key and notification

- Call history, Conference calls (10), call waiting, transfer calls to another extension or phone number

- Integrates with your device’s contact list, for easy dialing. It allows you to make cheap international calls wherever you are, without using your wireless airtime or roaming charges.

- International Coverage: Save 90% on international roaming calls, when you’re traveling outside the U.S. and Canada with free Wi-Fi access.

- In-app “?” help tips on how to make calls, initiate conference call or transfer calls.

Legal Note

- VTX VoIP works best on WiFi. Spotty signals of 3G network may hinder voice quality.

- Use of VTX VoIP with 3G or 4G may result data charges from your wireless provider.

- VTX VoIP is not responsible for the cost of international calls made from your phone's dialer or other applications. Therefore, if you did not use the VTX keypad to dial the international calls, then you know that the VTX VoIP app is not being used, and the call will be handled by your mobile operator at your expense.

What’s New

Version 2.1801.6

Fixed microphone and contact list permission, UI compatibility for iPhone X Max.

App Privacy

The developer, Vertex Telecom, Inc., has not provided details about its privacy practices and handling of data to Apple. For more information, see the developer’s privacy policy.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.


  • Family Sharing

    Up to six family members will be able to use this app with Family Sharing enabled.

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