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Read the latest stories, use cases and updates to make optimal use of your business number.

3D WhatsApp icon on a green background

WhatsApp introduces usernames: what changes for your business?

WhatsApp now lets users choose a username instead of a phone number. We outline exactly what's changing, what it means for your business's customer contact via WhatsApp Business, and why a fixed business number still holds value alongside it.

CallFactory / 14 Jul 2026 / 4 min read

news
Diagram with three stacked components on the left and one realtime speech model on the right

Two ways to build an AI voicebot: stitching versus realtime

The way a voicebot processes speech determines whether it sounds natural or sluggish and stilted. Stitching stacks three separate components on top of each other, whilst a realtime speech model handles the entire conversation in one go. For most business call flows, realtime delivers the best result, though stitching remains valuable for post-call analysis.

Jan / 22 Apr 2026 / 5 min read

technology
Comparison between a dedicated IVR server in Europe and a shared cloud API in the United States

Why a dedicated IVR server or private API works faster than building on Twilio

Twilio is the obvious starting point for a call routing or voice application, but the shared American cloud falls short for many European businesses on log retention, data residency and support costs. This blog explains why a dedicated IVR server or private API from CallFactory solves those three constraints structurally, and when Twilio remains the right choice.

CallFactory / 22 Apr 2026 / 7 min read

virtual-numbers
AI receptionist with headset for business telephony

AI Receptionist: 24/7 Availability Without Extra Staff Costs

A smart telephone assistant that takes calls, books appointments, and qualifies leads in fluent English, 24 hours a day, without the cost of extra staff.

CallFactory / 21 Apr 2026 / 5 min read

technology

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