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Articles about Virtual Numbers | Tips and Advice

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

Zurich old town and the Alps

Swiss Phone Number for Business: Win Local Presence in Switzerland

A local +41 number gives a company outside Switzerland a credible Swiss presence and stronger inbound enquiries. This article explains how Swiss numbering works under BAKOM — geographic and national numbers need a Swiss address you provide, while a toll-free number can be registered on an address abroad — and how CallFactory files and routes the number for you.

CallFactory / 08 Jun 2026 / 7 min read

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London skyline with Big Ben

UK Phone Number for Business: Win Local Presence in the United Kingdom

A local UK phone number gives your company a credible British presence without opening a UK office. This guide explains how a foreign business obtains a +44 number, what Ofcom's geographic-association rule requires, and how CallFactory arranges activation and routing.

CallFactory / 08 Jun 2026 / 6 min read

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IVR Systems Explained

What an IVR system is and how it routes incoming calls to the right team — with menus, queues and opening-hours routing on a platform we operate ourselves.

CallFactory / 03 Jun 2026 / 3 min read

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International Phone Numbers Explained

What an international phone number is and how your business can get one — local, national and toll-free options, with call forwarding to any device.

CallFactory / 03 Jun 2026 / 4 min read

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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

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What Is a Virtual Phone Number?

What is a virtual phone number? Discover how it works, its advantages over VoIP, and how CallFactory reliably routes your calls.

CallFactory / 10 Mar 2026 / 3 min read

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