Virtual-Call's SIP Trunk service connects your existing IP-PBX to the public telephone network via SIP (Session Initiation Protocol) over an Internet connection.
SIP-Trunk Service - for Business Communication
Welcome to our SIP-Trunk service, the ideal solution for businesses in need of a versatile and cost-effective phone system. Unlike our Cloud PBX system, which includes a full set of advanced call management features for businesses. Our SIP-Trunk service allows you to connect multiple phone numbers to your existing telephone system or PBX without the need for an extensive investment in hardware infrastructure.
Our SIP-Trunk service is available in several countries including, Austria, Brazil, England, Germany, Switzerland, and Australia.
Please select the region for your SIP Trunk
As a provider of national SIP trunks for companies in different countries, we enable you to connect your offices and branches to your IP-PBX through a single connection. You can now discover the advantages of our national SIP trunks.
Since we understand that every business's needs are unique, we work with you to create a customized solution that fits your business needs. Our expert team is always on hand to provide you with the support and guidance you need to get started.


SIP Trunk Austria
National termination (domestic)
Emergency calls
Port of numbers
Microsoft Teams Direct Routing


SIP Trunk Germany
National termination (domestic)
Emergency calls
Port of numbers
Microsoft Teams Direct Routing


SIP Trunk Spain
National termination (domestic)
Emergency calls
Port of numbers
Microsoft Teams Direct Routing


SIP Trunk Switzerland
National termination (domestic)
Emergency calls
Port of numbers
Microsoft Teams Direct Routing
We will soon expand our service in the Europe countries.
Optional
We will soon expand our service in North America.
Optional


SIP Trunk Brazil
National termination (domestic)
Emergency calls
Port of numbers
Microsoft Teams Direct Routing
We will soon expand our service in LATAM.
Optional
We will soon expand our service in Asia.
Optional
Benefits of our SIP Trunk service
Full PSTN replacement
National termination
Calls are routed nationally in the respective countries via stable and highly secure geo-redundant SIP clusters, therefore short latency and top voice quality and monitoring around the clock (24/7).
SIP cluster 24/7 monitored
Continuous monitoring of the performance of the installation is one of the significant differentials of Virtual-Call carrier service. It ensures service quality as well as constant customer satisfaction.
Cost efficient
We guarantee interconnection between headquarters and all branch offices with just one contract, one technical contact, and one connection. Possibility of reducing telephony costs by up to 70%.
Connect the SIP Trunk with any IP PBX and Platform
Virtual-Call SIP Trunking work with any system, including 3CX, Asterisk, Microsoft Teams, Aastra, and many more.
REQUEST A QUOTE NOW
If you're looking to cut your communication costs, expand your phone line, and streamline your communication, look no further than our SIP-Trunk Service. Contact us today to learn more about how we can help you improve your business communication.