PBX Call Assist 3

Unified communications solution with CTI*, presence management and instant messaging to
improve collaboration for up to 40 workstations

With PBX Call Assist 3, organisations are able to improve their communications and collaboration internally and across company boundaries with partners, suppliers, and customers.

In addition to proven CTI, instant messaging, presence management, screen sharing and federation, PBX Call Assist 3 also provides audio/video (WebRTC-based) capabilities. Softphone functionalities (SIP) and a smartphone integration via Bluetooth with the Windows clients are also included.

Get there quicker: downloads and user licences directly from FONtevo.

The PBX Call Assist 3 software and user licences can be obtained from the FONtevo Online Shop directly. You do not need to purchase separate LAN TAPI licences to operate PBX Call Assist 3.

Without user licences the software can be used in demo mode for 45 days.

Buy user licences             Load demo version             Documentation

The highlights at a glance

  • SIP softphone for maximum flexibility and mobility in your day-to-day work routine
  • Screen sharing for smooth cooperation
  • Platform-independent – multi-device support with free choice of device
  • VideoChat from client to client
  • Presence management – availability of your employees at a glance
  • Easier administration by central user management

* Computer Telephony Integration


Softphone functionalities1

  • Call accept
  • Call reject
  • Call end
  • On hold
  • Call query
  • Reject in call status
  • Forwarding in call status2
  • Forwarding during a call2
  • Establish inquiry2
  • Call brokering2
  • Connect inquiry2
  • Conference2

Presence management

  • Automatic presence state detection
    • online and available
    • online and busy
    • online but absent
    • online but inactive
    • offline
  • Manual presence state setting
    • busy
    • available
    • do not disturb
    • absent

Instant Messaging

  • Sending text messages between two or more PBX Call Assist 3 clients


  • VideoChat accept
  • VideoChat reject
  • VideoChat initiate

Computer Smartphone Integration (CSPI)

  • Bluetooth pairing with the Windows PC
  • Search in smartphone contacts via the Windows PC
  • Hotkey support
  • Control of smartphone telephony via PC client
  • Journal support


  • OBDC (Access, SQL Server, MySQL)
  • LDAP (OpenLDAP)
  • Active Directory
  • Public Exchange directory
  • Microsoft Office 365
  • IBM Notes databases
  • Google Apps for Work / G Suite
  • DATEV pro
  • Microsoft Dynamics AX, CRM and Navision
  • Microsoft Dynamics CRM Online
  • Salesforce
  • Das Telefonbuch
  • Herold
  • KlickTel
  • TwixTel

CTI functionalities

  • Outgoing call dialling with
    • direct phone number input
    • context menu (right click on the contact)
    • selecting a phone number and executing via hotkey
  • Display of incoming calls in the application window
  • Supported TAPI functions
    • Call accept
    • Call reject
    • Call end
    • On Hold
    • Query call
    • Call forwarding
    • Conference (3PTY)
  • Call forwarding set/delete
  • Call protection set/delete
  • List of missed calls
  • Notes set/delete

Supported FONtevo ICT systems

  • COMpact 4000 (up to 20 workstations)
    licence package4 for 5 clients, 15 clients
  • COMpact 5000/5000R, 5200/5200R, 5500R (up to 40 workstations)
    licence package4 for 5 clients, 15 clients, 40 clients
  • COMmander 6000/6000R/6000RX (up to 40 workstations)
    licence package4 for 5 clients, 15 clients, 40 clients

1 Not for macOS
2 Just for the Windows client
3 Windows, iOS, Android and only between Calls Assist 3 clients
4 All licence packages are available as upgrade for PBX Call Assist 2 (without LAN TAPI licences)

Note: PBX Call Assist 3 is designed for Auerswald LAN TAPI and cannot manage any other TSP

Recommended for Technology / Connection Display / Control
Up to 40 users Software / IP Microsoft® Windows
Sales partners

Following partners do not only know the FONtevo products but as well the country-specific characteristics you will always find in telecommunications. Here you will get the matching products with the adaptations for the telephone network of the relevant country plus support if questions will come up.

Find your partner