kelvasySite-to-site VPN
Connect branch networks and approved business systems across different internet connections.
Connect your locations.
Extend your office
phone system.
Kelvasy helps businesses connect their networks and phone systems across different locations. Our managed VPN service gives approved remote devices private access to office resources and allows compatible IP phones to register as extensions on your business PABX.
A MANAGED PRIVATE CONNECTIONYour locations.
Your locations.
A shared phone system.
Kelvasy configures MikroTik routers and VPN routing so approved devices at different locations can communicate with a central IP PABX.
Who it is for
Businesses with multiple branches, distributed teams, home offices, or a central phone system that needs remote extensions.
CONNECTION OVERVIEW
OfficeBranchHome office
Managed private VPNApproved devices · Controlled access
Central IP PABXCompatible SIP extensions
Simplified service illustration. Equipment and connectivity are assessed before quoting.
WHAT WE OFFERConfigured around
Configured around
your business.
Connectivity, routing and phone integration, delivered as a managed service with an agreed scope.
Remote VoIP extensions
Connect compatible IP phones at branches or home offices to your central PABX.
MikroTik configuration
Configure VPN tunnels, routing, and firewall permissions for supported MikroTik routers.
PABX and phone integration
Configure compatible SIP extensions and test registration, calling, and two-way audio.
Controlled network access
Specify which devices and services each location can reach.
Ongoing support
Offer troubleshooting and maintenance according to the customer’s agreed support plan.
Assess. Connect.
Test. Hand over.
Assessment
We review your internet connections, routers, network addresses, PABX, and phones.
Setup
We configure the VPN, routes, and access permissions.
Integration
We connect the agreed devices and configure compatible phone extensions.
Testing and handover
We test connectivity and calls, document the setup, and explain the available support options.
FREQUENTLY ASKED QUESTIONS
Before we connect.
Can different locations use different internet providers?
Yes, provided their connections support the required VPN traffic.
Can I use my existing router, PABX, and phones?
Often, yes. We check equipment compatibility and software support before quoting.
Does every phone need VPN software?
No. A supported router at the location can provide the VPN connection for the phones.
Will calls between extensions be free?
Internal extension calls typically do not incur telephone-provider call charges, but internet, hosting, licensing, and service fees may apply. External calls require a suitable SIP trunk or telephone service and remain subject to provider charges.
Will the service improve call quality?
Call quality depends on internet latency, jitter, packet loss, available bandwidth, and equipment. We test these conditions and advise on suitable hosting and network configuration.
Does the service include a PABX, telephone numbers, or SIP trunks?
These are separate unless explicitly included in your quotation.
ASSESSMENT & QUOTATIONRequest a
Send an email ↗
Request a
tailored quotation.
Pricing depends on locations, users, equipment, configuration complexity, hosting, and support requirements.
Tell us what you need to connect. We’ll review the requirements and discuss the assessment and quotation process.