How to Install Multi-Line TAPI

To install the 3CX Multi-Line TAPI for use with the 3CX Softphone for Windows:

  1. Download the installer from here.
  2. Run the installer. Specify the extension numbers followed by the names of the extensions’ users.
  3. Press Next to continue and complete the installation.

3CX Multi-line TAPI Setup

  1. Open your 3CX Softphone, go to Settings and enable the checkbox ‘TAPI integrations’.

3CX Softphone > TAPI Integrations

  1. Start making calls from your TAPI enabled app using the 3CX Softphone for Windows.

Adding more lines

Adding more lines to your TAPI Installation

If you need to add more lines to your TAPI installation, edit the following configuration file:

C:\ProgramData\3CXMultiLineTapi\3CXTapi.ini

Steps to add more lines to your TAPI Installation

Editing this configuration file is easy.

  1. Follow the same structure, adding as many lines as you need, one line per extension:

Extension Number,Name

  1. When all modifications are completed, save the file and exit.

Saving file in UTF-8 encoding

  1. Ensure that the file is saved in UTF-8 encoding so press “Save as” and toggle the encoding to UTF-8 before pressing Save.
  2. For the changes to come into effect, the Windows “Telephony” service needs to be restarted.
  3. Restart your 3CX Softphone for Windows for the changes to come into effect.

Note: In the image above we show 5 users - 103, 106, 105, 107 and 104. It is important that on Line 1 (the session of Jack Horacio), TAPI is configured to work with the entry of extension 103 - Jack Horacio, and the 3CX Softphone is provisioned with extension 103. If the 3CX Softphone is configured with an extension number that does not match the selected TAPI line, TAPI will not work and you will get an “an invalid TAPI handle” error.

You can confirm if 3CX Softphone has correctly established a connection with TAPI by opening the app, click on Settings and TAPI integrations must be enabled, followed by the state ‘Connected’.

Last Updated

This document was last updated on 17 November 2023

https://www.3cx.com/docs/installing-multi-line-tapi-v20/