This article outlines how to connect your phone system with TelephoneIntegration, if no TAPI driver can be found. If you cannot find a proper TAPI driver for your VoIP phone system, but his VoIP phone system is based on SIP, then you might find the SIP Client wrapper really helpful.

Requirement: TelephoneIntegration (TI) Client v 7.109 or higher

The TAPI driver is a component beyond our control, as it is provided by the phone vendor and, similar to a device driver, the TAPI driver connects a physical phone device with a windows operating system.

When calling over TAPI line, you sometimes need to predial a specific number to make an external call. In some cases, the TAPI driver is also passing this number to the TelephoneIntegration (TI) Client. If the TI Client Balloon then shows the PREDIAL NUMBER + REGULAR PHONE NUMBER instead of only the PHONE NUMBER. 

This blog article outlines how to send dtmf signals directly from the TelephoneIntegration (TI) balloon, so you no longer need to do that with your telephone handset. This feature is available in version 5.56 or higher.

Examples of using dtmf functionality:

• authentication by conference calls
• interacting with IVR systems

That means, when you call e.g. a support telephone number, or you would like to start a conference call, you may have to enter an access password or some digital numbers. With the dtmf function, you don't need to use your telephone handset to enter your access password, but to select it direclty via the dtmf function in TelephoneIntegration.