PBX as a Service

Modernize your phone system with Cloud PBX.
Briefly about the solution

Mainstream PBX as a Service (PBXaaS) is a modern, cost-effective solution for business users who want to provide reliable and flexible communication inside and outside the company. Using this service, your company can raise business communication to a higher level while eliminating the high costs of purchasing and maintaining PBX hardware. Whether you want to upgrade your call center or connect offices in different locations with an efficient and cost-effective telephone system, Mainstream PBXaaS allows you to take full advantage of new technologies. 



The Mainstream PBXaaS solution helps you quickly and easily deploy a comprehensive and functional telephone system designed to meet the demands of enterprise users, which you can expand as needed. Considering that it is hosted on the cloud, the system enables efficient business communication inside and outside the office walls. Your employees can communicate with clients, partners, and colleagues from any location, using a variety of devices and useful features such as call recording and HD conferencing. 


At the same time, PBXaaS guarantees high availability and security of the telephone system. The solution is located in modernly equipped, geographically separated data centers with Tier3 certificates and infrastructure on the cloud and 24/7 support.










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Business mobility

PBXaaS is designed to work and be accessible from any place or device. All communication channels (calls, messages, fax) are available to you via the business phone number. 


The system is fully customized to your needs and offers functionalities that meet the scalability, security, and availability requirements of the telephone system. 

Smaller capital investments

Use the cloud delivery model to eliminate the cost of purchasing and installing PBX hardware on-site, as well as the cost of maintaining the physical system. 

Scalable infrastructure

PBXaaS is a dynamic system that grows according to the needs and requirements of your business. The Mainstream team will help you take advantage of the flexibility of cloud technologies and customize the PBX infrastructure to your needs. 

Easy to set up and use

Avoid complex and time-consuming installations of a physical PBX system and quickly start using a modern communication solution with complete technical support. 

Support at all stages

From consulting through design and implementation to taking care of the functioning of the PBX system and background infrastructure, Mainstream experts guide you through the entire modernization process. 

Application of solutions

Cloud PBX is a virtual PBX system that uses an internet connection to automatically answer calls and redirect them to the appropriate departments or user extensions. It is hosted in secure Tier3 data centers and provides you with all the features of advanced communication solutions: creating voicemail, queues, IVR answering machine, conference service, music on hold, best-priced routing, national/global telephone networks, and much more. Thanks to advanced functionalities and cloud application model, the PBXaaS solution is ideal for:


  • Companies that are using or starting a call center;
  • Small and medium enterprises that want to avoid initial investments in hardware
  • Enterprise users who are expanding an existing telephone system
  • Companies whose business requires high availability of telephone communication;
  • Users in all industries who strive to improve their work-from-home methods and team communication at a distance




Implementation steps

Step 1

Analysis and definition of specific needs

Step 2

Adaptation to the processes themselves (defining the approval matrix)

Step 3

Creating a cloud environment and testing

Step 4

Go live and support

Technical characteristics

The technical platform is based on VMware, Hyper-V, Cisco ACI, Citrix Netscaler, NetApp, 3PAR systems. All Mainstream data centers are Tier3 certified, and our SLA guarantees availability and performance at the service and application levels. The availability guarantee is 99.99%, and resources can be increased as needed within 24 hours. 

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About the company

Mainstream is a leading company in the region for providing Enterprise Cloud, Managed Hosting, and other services in the field of IT infrastructure. We are recognized for our expertise in providing advanced services for companies that are beginning the process of digital transformation, as well as traditional companies that want to transform their IT in order to increase efficiency and optimize the use of IT infrastructure.

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