Business telephony built for international operations

Connect teams, offices, and existing voice infrastructure through one business communications provider. Virtual-Call brings together cloud PBX, SIP trunking, and Microsoft Teams telephony with the technical support required for reliable day-to-day operations.

Enterprise VoIP team meeting: Powerful cloud PBX and reliable SIP trunk solutions for businesses – connected, flexible and globally accessible.

Business continuity

Reliable business telephony designed to support your day-to-day operations.

International connectivity

Connect teams, offices, and business numbers across supported markets.

Expert support

Technical expertise for your business telephony environment.

Resilient infrastructure

European infrastructure for professional business communications.

Cloud-Telefonie

Virtual-Call – Your partner for professional VoIP solutions worldwide

Virtual-Call delivers tailored VoIP solutions for growing businesses around the globe. From cloud PBX platforms to enterprise-grade SIP trunks and MS Teams integration, our services scale seamlessly with your international communication needs.

Choose the right voice architecture for your business

Whether you are replacing an on-premise phone system or extending an existing PBX, the right solution depends on your infrastructure, locations, integrations, and continuity requirements.

Cloud PBX

Centralise business calls, users, call flows and customer communications in a cloud-based phone system.

Explore Cloud PBX

Business SIP Trunking

Connect an existing PBX environment to business voice services without replacing the entire telephony infrastructure.

Explore Business SIP Trunking

Plan your business telephony in three steps

Before recommending a service, we clarify how your organisation currently communicates and what the future environment must support.

1. Review your current environment

We examine your locations, existing PBX, numbers, users, integrations, and operational requirements.

2. Define the appropriate architecture

We determine whether Cloud PBX, SIP Trunking, Microsoft Teams Direct Routing, or a combined approach fits the use case.

3. Prepare the transition

Technical prerequisites, responsibilities, and configuration requirements are clarified before activation and migration.

Manage your telephony centrally and efficiently

Advanced Cloud PBX capabilities for complex operations

Cloud PBX for distributed teams and locations

Go beyond basic business telephony. Automate call handling, connect customer data, improve service operations and give IT teams greater control over business-critical communications.

  • Advanced Cloud PBX capabilities for complex operations
  • AI-powered call handling
  • Visual Call Flow Designer
  • Intelligent customer routing
  • CRM and business integrations
  • Omnichannel messaging
  • Real-time operational visibility
  • Business continuity

Connect your existing voice infrastructure

Business SIP Trunking for controlled modernisation

Extend the useful life of a compatible PBX while moving voice connectivity to SIP. Virtual-Call business SIP trunking connects existing telephony infrastructure to local or international voice services, subject to technical assessment and market requirements.

This approach is suited to organisations that need to modernise connectivity without immediately replacing the complete phone system.

  • Connect compatible PBX infrastructure to SIP-based voice service
  • Plan capacity around channels, call patterns and business requirements
  • Retain existing telephony investments where technically appropriate
  • Support local and international number requirements in available markets
  • Prepare migration with compatibility and configuration checks
  • Connect Microsoft Teams telephony where the technical environment allows
SIP trunking features of Virtual-Call
What is a SIP Trunk and how does it work?

More services for cloud telephony

Extend your business communications

Add the services your organization needs to connect teams, establish a local presence in international markets, or expand your own communications portfolio.

Microsoft Teams logo representing Direct Routing for business telephony

Microsoft Teams Direct Routing

Bring external business calling into Microsoft Teams. Connect your Teams environment to business voice services and telephone numbers while keeping communication within the tools your teams already use.

Explore Teams Direct Routing
NEW!
Cloud PBX dashboard representing a white label business telephony platform

White Label Cloud PBX

Add advanced cloud PBX and unified communications to your own service portfolio without building the platform from scratch. Designed for telecom operators and service providers, our white-label solution lets you serve business customers under your own brand while keeping control of the customer relationship.

Discuss a White Label Partnership
Digital globe with network connections representing international business numbers

International Business Numbers

Establish a local business presence in the markets where you operate. Connect international telephone numbers to your Cloud PBX or SIP environment and manage communications across locations more consistently.

Explore International Numbers

Manage communication across teams and locations

One environment for business voice

When offices use different phone systems, providers and support processes, routine changes become harder to coordinate. A centralised approach gives IT teams a clearer view of users, numbers, routing, and service requirements.

Virtual-Call helps organisations build a telephony environment appropriate to their infrastructure and operating model.

  • Central administration for supported users and locations
  • Consistent numbering and call-routing policies
  • Clearer coordination of providers and technical responsibilities
  • An architecture that can evolve as requirements change
Business professional using a desk phone in an office environment
Business professional using a phone and laptop while working remotely

Keep business numbers available across supported devices

Support flexible ways of working

Cloud-based communication allows authorised users to work with their business identity across office, desktop, and mobile environments. Call routing and availability can be managed according to the organisation’s operational needs.

  • Supported desktop, mobile and web access
  • Business numbers connected to authorised users
  • Call routing for office, remote and mobile scenarios
  • Consistent communication across distributed teams

Why companies work with Virtual-Call

Business telephony decisions affect continuity, customer contact, and the workload of internal IT teams. The provider must understand both the service and the environment in which it will operate.

Technical understanding

Cloud PBX, SIP trunking, and Teams telephony are evaluated in relation to your infrastructure, locations, and operational requirements.

Operational clarity

Compatibility, service dependencies, and responsibilities are clarified before implementation.

International operations

Coordinate business numbers and voice requirements across supported countries within a clearer operating model.

Designed for organisations with complex voice requirements

Multiple locations

Centralise communication requirements across offices and branches.

International operations

Coordinate numbers and voice services across supported countries.

Existing PBX infrastructure

Modernise connectivity without replacing a compatible system unnecessarily

Microsoft Teams environments

Connect Teams telephony to the required voice services and calling setup.

Capabilities for professional voice environments

Select the operational and technical capabilities required by your organisation. Final availability depends on the service, configuration and market.

Dedicated service coordination

A defined point of contact for commercial and service-related requirements.

Call data and reporting

Review available call records and operational information to support administration and analysis.

Multi-site administration

Manage supported locations, users and numbering requirements through a coordinated environment.

Routing and resilience planning

Define routing dependencies, continuity requirements and recovery considerations for critical voice services.

Security and compliance requirements

Clarify data handling, number registration, caller identity and market-specific requirements before deployment.

APIs and business integrations

Connect supported CRM, helpdesk and business applications where the selected service provides the required interface.

What our SME customers say

Success stories of Swiss companies

Thanks to the mobile app, our employees can take calls both in the office and when working from home. Setting up new devices was child's play.

Dominik Tschochner from KMU Trexpert AG
— Dominik Tschochner
Managing Director KMU Trexpert AG

The virtual switchboard offers us flexibility and independence at significantly lower costs. We are very satisfied with the technical solution and the service.

Jörg Rust, Webworker Company GmbH
— Jörg Rust

First-class advice and a good connection. As an international company based in Switzerland, we appreciate the local telephone numbers and low costs.

Intervilla
— Urs Pavoni

Companies, that trust the cloud telephony from Virtual-Call

What IT teams need from a telephony provider

Technical fit

We review your existing PBX, Microsoft Teams environment, locations, and voice requirements before recommending an approach.

Service continuity

Routing, service dependencies, and continuity requirements should be considered before migration or activation.

Central control

Bring administration, telephone numbers and communication requirements into a clearer operational structure.

Supported implementation

Clarify responsibilities, prerequisites, and configuration needs before the service goes live.

Find the right architecture for your business telephony

Tell us about your locations, current phone system, users and integration requirements. We will help you identify the appropriate next step for Cloud PBX, SIP Trunking or Microsoft Teams telephony.

 

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