Tech

TAPI Reloaded

Published on:

February 15, 2013

TAPI (Telephony Application Programming Interface) has been a staple in connecting user programs with telephony hardware, evolving from physical devices to virtual software solutions. Widely adopted by the PBX industry, snom ONE also provides a TAPI service provider (TSP), with the latest version offering enhanced functionality. The new TSP supports both incoming and outgoing calls, including automatic call clearing even before the phone is picked up. It also includes a reconnection feature for lost connections, addressing internet reliability issues. Available for both 32 and 64-bit systems, users should ensure they install the correct version for their operating system.

TAPI is one of those die-hard standards from the 90s. Originally designed to deal with hardware installed in the PC, it has evolved over time into a more virtual piece of software that connects the user programs running on Windows with the devices that make phone calls.

Not much of a surprise, the PBX world has widely adopted TAPI. Almost all vendors of PBX systems offer a TAPI service provider that may be used with their PBX. This is like a device driver for the PBX.

snom ONE has its own TAPI service provider (TSP). While the first versions were very basic, the latest one now offers incoming calls. This is an important step forward, because a lot of CRM tools also offer a bridge to TAPI, essentially making the incoming call pop-up possible. But for outgoing calls the new TSP also has enhanced functionality, so calls can be cleared even though the user hasn't even picked up the phone. We found out that not only for SIP connections, but also for CSTA, the internet can be unreliable and the TSP needs to reconnect in case the connection gets lost.

Like before, we offer the TSP for 32 and 64-bit systems. Because of its origin from the 90s, you need to pick the right one for your Windows operating system, as there are dependencies in it. For more information and the latest version, visit our Wiki at http://wiki.snomone.com/index.php?title=Snom_ONE_TSP. If you have the snom ONE TSP installed, uninstall it first and install the new one.

Latest Articles

View All

6 + 1 Phone System Features You Need in 2026

In 2026, a modern phone system must go well beyond basic calling. Core requirements now include built-in AI for smarter call handling and transcription, real-time analytics dashboards for visibility and control, flexible auto attendants to route calls efficiently, seamless Microsoft Teams integration, and robust mobile apps that support hybrid and remote work. Clear separation between business and personal calls protects work-life balance, while reliable white-glove support ensures these capabilities work smoothly in real-world environments as communication needs evolve.

January 30, 2026

Your Outdated Phone System Is Costing Your Company Money

Legacy phone systems may still work, but they often come with hidden costs, limited scalability, and little support for hybrid work. Aging hardware, ongoing maintenance, and rigid infrastructure can quietly hold businesses back as they grow. Cloud-based VoIP systems remove these constraints by reducing telephony expenses, improving flexibility, and enabling teams to communicate seamlessly from anywhere. For many organizations, modernizing business telephony is no longer optional, it is a practical step toward efficiency and resilience.

January 27, 2026

Vodia Announces Integration with ElevenLabs Voice AI Platform

A streamlined integration connects the Vodia PBX with the ElevenLabs Voice AI Platform using a lightweight IVR JavaScript script and native SIP REFER for call transfers. Audio and call control are handled entirely through standard SIP signaling, while all conversational logic, prompts, voice selection, and routing rules are configured in the ElevenLabs dashboard. This approach removes the need for webhooks or WebSocket connections and keeps the PBX side intentionally minimal, making the deployment clean and production-ready.

January 22, 2026