How to integrate telephony with Zendesk

Phone and email together account for over 50% of incoming requests in many support teams. Yet telephony often runs parallel to Zendesk rather than inside it: calls are manually logged as tickets, customer data is looked up in a second system, and team leads have to switch to the phone system’s dashboard for statistics. That costs time, creates friction and makes reporting more complex than it needs to be.

A clean telephony integration closes this gap: calls are automatically created as tickets, context data is available when the call comes in, and reporting runs on the same data as every other channel.

When phone is the right channel

Telephony works best for complex, time-sensitive or emotionally charged issues — cases where asynchronous communication takes too long or leaves too much room for misinterpretation. At Fond Of, a company running seven brands in D2C, phone and email together account for around 60% of all tickets; for time-critical requests like order cancellations, phone is the more reliable channel. For standard requests, it’s worth considering self-service or automated flows — not to replace telephony, but to use it deliberately where it actually adds value.

What an integration needs to deliver

A well-implemented telephony integration in Zendesk covers three layers:

Data flow on incoming calls

When a call comes in, your team shouldn’t have to spend time locating the customer in the system. An integration pulls customer data — name, order history, open tickets, customer number — automatically into the Zendesk interface as soon as the call connects. That reduces average handling time and improves first contact resolution because agents have full context from the start.

Automatic ticket creation

Every call creates a ticket without manual intervention. Call notes are documented directly in the ticket, calls can be categorised, and completed conversations appear in Zendesk Explore alongside data from all other channels. That makes telephony measurable: volume, topic distribution, resolution rates, wait times — all from one source.

Routing and control

Calls can be routed by skill, team or availability without configuring a separate system. Callback functions prevent wait times during peak hours. In more complex setups, voice bots or IVR flows handle initial qualification: the caller describes their issue, an AI-powered system identifies the intent, creates the ticket with the right fields and tags, and hands the case to the right agent — or triggers standard processes fully automatically, without a ticket or any agent involvement.

Zendesk Talk vs. external telephony

Zendesk offers Talk as a native telephony solution that runs directly in the interface without a separate integration. For teams without an existing phone system who want a straightforward starting point, that’s a sensible option.

Many companies, however, already use an external solution or need features Talk doesn’t offer — such as AI-powered conversation analysis, SMS, more detailed analytics or specific routing logic. In those cases, there are two paths:

  • Cloud telephony with native Zendesk integration: Aircall connects directly with Zendesk, automatically creates calls as tickets, transfers call notes and recordings, and provides real-time analytics. Aircall AI transcribes conversations, generates summaries and detects sentiment — without any manual follow-up work. More on Aircall and our consulting services.
  • Existing phone system (on-premise or legacy cloud): If no native Zendesk app exists or the available app doesn’t deliver what you need, our telephony middleware connects your system to Zendesk via API. The phone system sends call events to the middleware, which creates tickets, maps data and triggers workflows. This works with Cisco, Alcatel, Mitel, Placetel and other systems.
Schematic overview of the Leafworks telephony middleware: connecting external phone systems to Zendesk via API

Telephony statistics directly in Zendesk

A common problem with external phone systems: agents and team leads have to switch to a separate dashboard for telephony metrics. We built a Zendesk app that pulls data directly from the phone system via API and displays it as a compact statistics view inside the Zendesk interface — currently available for Aircall and Amazon AWS Connect. No system switching, no manual reporting.

What this looks like in practice

At Jelmoli, we connected Zendesk to an external phone system. Previously the team worked with Outlook and an isolated phone setup with no reporting. After the integration: 92% of tickets are resolved on first contact, handling time has measurably decreased, and the team has full visibility over volume and topic distribution across all channels for the first time.

At Fond Of — a company running seven brands in D2C — phone and email have run in a single system since switching to Zendesk. The team can prioritise time-critical requests like order cancellations and meet service levels without switching between tools.

Where to start

If telephony currently runs outside Zendesk, the first step is understanding which integration fits your existing infrastructure. We review your setup, assess whether Aircall, another cloud solution or the middleware is the better path, and handle the technical implementation — including routing configuration, workflows and training.

Book a free initial consultation

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