direct works with IP phones, with phone systems, and with older Tiptel phones.

IP phones
To connect to IP phones, you'll only need a supported phone. No cable, no server.

Phone systems
For communication with a phone system, direct uses our telephony servers TeamCall^® or TeamCall^® Express. The telephony server typically is connected to the phone system via the network. Check out our list of compatible phone systems on this page.

TeamCall is available for macOS, Windows and Linux.

TeamCall Express uses the phone system's TAPI driver. Due to its use of TAPI, TeamCall Express is only available for Windows. The TAPI driver must support the creation of multiple TAPI lines (so called 3rd-party-TAPI).

In addition to the phone systems listed below, TeamCall Express supports many more phone systems that have a multi-line 3rd party TAPI driver. For details, please get in touch: direct-sales@ilink.de.

Tiptel phone with serial cable
To connect to a compatible Tiptel phone, you'll use a cable and a USB/Serial adapter. Check out our overview of compatible phones.