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7 advantages of VoIP that make the landline redundant

By Zarioh Digital Solutions·25 March 2026
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7 advantages of VoIP that make the landline redundant

The landline has long been the backbone of business communication. But VoIP telephony offers lower costs, more flexibility and better integrations than traditional ISDN or PSTN connections ever could. Here are the seven most important advantages organisations experience daily after switching.

The landline is disappearing from Dutch business. KPN has already phased out its ISDN network and other providers are following. But beyond this external necessity, organisations are increasingly choosing VoIP — Voice over Internet Protocol — actively, because of the concrete advantages it offers over traditional telephony. Here are the seven most impactful ones.

1. Significantly lower call costs

VoIP calls travel over the internet rather than the fixed telephone network. This makes calls to fixed numbers domestically and internationally substantially cheaper. Internal calls between offices or colleagues are completely free, regardless of location. Organisations with multiple branches or employees abroad notice a significant saving on their phone bill in the very first month.

2. Calling from any location with the same number

With VoIP, a phone number is not tied to a physical line but to an account. Employees can make and receive calls on their business number regardless of whether they are in the office, working from home or on the road. Via a softphone app on a laptop or smartphone, the office number is always reachable. This makes hybrid working operationally straightforward without clients or partners needing to call a different number.

3. Easy to scale up and down

With traditional telephony, adding a line required a technician visit and infrastructure changes. With VoIP, you add a user via a management panel, assign a number and the employee is reachable the same day. The same applies to scaling down: no contracts with minimum line quantities, no equipment surcharges. You pay only for what you use.

4. Rich call features included as standard

Where business telephone exchanges (PBX) previously required expensive hardware for features like queues, call forwarding, voicemail-to-email and call recording, these features are included as standard in the VoIP software layer. Voicemail is automatically sent as an audio file to your email inbox. Calls can be forwarded based on time of day, department or employee availability. IVR menus (interactive voice response) can be configured via a web interface without a technician visit.

5. Integration with CRM and business software

One of the most powerful advantages of VoIP is the ability to integrate with other business software. Via a CRM connection — with HubSpot, Salesforce, Microsoft Dynamics or a custom system — the customer record automatically appears on screen as soon as a customer calls. Call notes are automatically logged. After a call, the interaction is recorded without manual input. This saves time and significantly improves the quality of customer contact.

6. Management and monitoring via one dashboard

VoIP environments are managed via a central web interface or management portal. Administrators can see in real time how many calls are active, which queues are filling up and what the average waiting time is. Reports on call volume, peak times and unanswered calls are easy to export. This provides management information that was rarely available with traditional telephone exchanges.

7. Future-proof and cloud-based

VoIP does not depend on ageing physical infrastructure. Updates, new features and security patches are automatically rolled out by the provider. The environment scales with your organisation without new hardware investments. And if your location changes, employees simply take their numbers with them — a move has no impact on telephone reachability.

Zarioh Digital Solutions implements and manages VoIP telephony for organisations of varying sizes. From the initial inventory to complete migration including CRM integration: get in touch for a no-obligation conversation about the possibilities for your organisation.

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