Call centre vs PBX: what each one solves

In an office, the PBX is the arrangement working behind the one number customers call. The call lands at reception, reception transfers it to accounts, and accounts calls the warehouse on its extension. This used to happen in a box on the wall; today, in most businesses, a cloud PBX running over the internet does the same job.

A PBX carries the call but does not know what it is for. Who the caller is, what they asked last week, or whether a call-back was promised is not the PBX's business. Unless that information is kept on a record, it is lost when the call ends.

In a call centre the phone is shared team work. An incoming call goes to a free agent and joins a queue if everyone is busy. When the call ends, the agent writes the outcome: information given, quote requested, complaint opened. Outbound calls follow the same pattern; the call list is split between agents and each call's outcome is recorded.

Example scenario: picture a company in Antalya that installs and services air conditioners. If service requests arrived one after another on the same morning at the start of summer, one number and a few extensions would not be enough: the caller's place in line, which agent answered, and any call-back promise should be recorded. The same company's accounts team talking to a supplier, on the other hand, is simply a PBX matter.

The line is drawn by whether the outcome of a call is followed up, not by team size. A support team of a few people that links every call to the customer record and calls back the unanswered ones is working like a call centre. Whether the content of a call is recorded is a separate decision; the glossary explains what call logging is and which rules apply to it.

A PBX report says how long a call lasted; a call centre report asks whether the call did its job. Whether an unanswered call was called back, whether a customer had to call more than once about the same issue, and which calls turned into a quote or a service ticket are examples of those questions.

These measures can only be worked out once a call is linked to a customer record and an outcome. In a set-up that keeps only a call list, tying the same customer's separate calls together is done by hand and usually not done at all. So the first step in setting up a call centre is deciding which record a call is written to.

Article 4 of the Regulation on Commercial Communication and Commercial Electronic Messages defines messages with data, voice, or image content sent for commercial purposes through means such as the telephone and call centres as commercial electronic messages. Article 8 of the same Regulation requires a trader to state their trade name, and a tradesperson their name and surname, in a voice call. Before promotional or campaign calls, check whether the person's consent is recorded in İYS, Turkey's message consent register.

In its decision 2020/34, the Personal Data Protection Board treated calling a number given to a call centre for a magazine subscription in order to advertise another company as use of the data outside its original purpose. A call centre list should also carry the purpose for which each number was collected.

The PBX is a module on the same core as the CRM; it does not connect to a separate system. Each user is assigned a WebRTC extension, and the top of the window shows Connected or Not connected. PBX users are listed with their extensions, and numbers are dialled from the keypad. Outgoing and missed calls are listed with date, time, and duration; Call Center and Customers open as tabs in the same window, and the call stays on the contact card of the calling number.

The PBX module has screens for PBX numbers, PBX users, and call history; a NetGSM integration is used for the PBX and SMS. Call audio recording, a voice menu, and the screen opening by itself during a call are not part of this description. The Corex360 PBX page shows all the module's screens.