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Hosted Issabel PBX Cloud Solution

Communication system for organizations requiring professional business VoIP solution.

Issabel PBX is a comprehensive Unified Communications solution open sourced under the GNU Public License that provides the functions of business telephony system (PBX), fax, instant messaging, and email server. The multi-tenant Private Branch Exchange (PBX) phone system can be used to communicate with people both within and outside an organization using different channels such as Voice Over Internet Protocol (VoIP), ISDN, or analog devices. Issabel PBX provides a user-friendly interface for managing, reporting, and configuring telephony services.

Issabel is based upon open-source versions of Elastix, Asterisk, FreePBX, HylaFAX, Openfire, and Postfix. It provides PBX, fax, instant messaging, and e-mail server functionality.

Apps4Rent provides hosted Issabel PBX as a cloud service for uniting business communications within a single platform. The cloud-based business phone system is a powerful VoIP solution that offers flexibility, scalability, and efficiency to intelligently route calls for organizations that need to sustain remote and mobile offices.

Why Migrate from Legacy On-Premises PBX to Cloud Hosted PBX?

No Physical

Unlike legacy on-premises PBX systems, cloud-hosted PBX does not require expensive infrastructure and telephony equipment. It can be used on a wide range of internet-enabled devices such as, smartphones, PCs, and VoIP phones.


Cloud-hosted PBX solutions can be deployed using a single-centralized system across locations and geographies. Global admins can manage the solution from anywhere using web-based management features to support distributed workforces.

No Technical Expertise

Deploying and managing customized on-premises PBX solutions requires in-house telephony expertise that is often accompanied by inflexible service contracts. Cloud-hosted Issabel IP PBX is a standardized solution that is easy to use and manage.

Easy Upgrades & Scaling

On-premises PBX systems lack many features and are difficult to upgrade and scale. Changing certain components or upgrading communication systems can result in compatibility issues. Cloud PBX solutions are much easier to scale and upgrade.

Why Issabel PBX Cloud Hosting?

Open-Source Application

As an open-source application, Issabel PBX is compatible with a wide range of hardware devices and application plugins that are difficult to integrate with proprietary software. This reduces individual licensing costs and ensures adequate support.

Modular Software Architecture

Issabel PBX is a modular application. Businesses can customize their deployment with modules of their choice based on their requirements. It is possible to add features such as music on hold, predictive dialing, etc. without modifying the hardware.


Issabel PBX offers some of the best call control features available in modern cloud PBX solutions. The solution is designed to deliver clear voice quality, minimize latency and lower jitter while handling demanding inbound and outbound traffic.

Robust Security Capabilities

Issabel IP PBX has advanced security features, such as the ability to configure Geo IP based firewall rules. Admins can block shell access to users from a graphical user interface that simplifies management.

Why Apps4Rent Hosted Issabel PBX Solution?


Apps4Rent hosted Issabel PBX solution is used by hundreds of businesses around the globe, most of which leverage Azure infrastructure. We have integrated Issabel PBX with Microsoft Teams, Office 365, and Azure AD to unify distributed teams.

Root Level

With Apps4Rent hosted Issabel PBX solution, businesses can take advantage of dedicated resources with full root-level access. While resources can be managed using a user-friendly control panel, admins can execute commands with root access.

Fully Managed Solution

As a fully managed solution, Apps4Rent hosted Issabel IP PBX solution is available as a platform as a service (PaaS) deployment. While you can configure the solution, we manage the OS, application stack, and server storage network.

Round-The-Clock Support

Our engineers are available 24/7/365 via phone, chat, and email for any technical queries. We take no longer than 15 mins to respond to your query. We are committed to resolving your issues in the least possible time.

Serving Over 10,000 Businesses in More Than 90 Countries

Virtual Desktop Bronze

Save 10% on annual payment
  • 2 GB RAM and
    2 vCPUs
  • Install custom applications
  • 40 GB SSD disk space
  • vGPU option available
  • 1 user included in the above price. No add-on users
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Virtual Desktop Silver

Save 10% on annual payment
  • 4 GB RAM and
    2 vCPUs
  • Install custom applications
  • 50 GB SSD disk space
  • vGPU option available
  • Includes one user
    Additional @$18/user/month

Virtual Desktop Gold

Save 10% on annual payment
  • 8 GB RAM and
    4 vCPUs
  • Install custom applications
  • 65 GB SSD disk space
  • vGPU option available
  • Includes one user
    Additional @$18/user/month

WVD Bronze

Save 10% on annual payment
  • Dedicated 4 GB RAM and
    2 vCPUs
  • Install custom applications
  • 100 GB disk space
  • vGPU option available
  • Optional add-on user possible ($35/user/month)
Note: Each add-on user gets additional 1 GB RAM.

Azure Services Offered by Apps4Rent

Storage & Backup

Get highly secure storage and backup services on Azure including blob, file, and queue storage.

App Hosting

Accelerate your app development by integrating App Service to your existing frameworks.

Disaster Recovery

Get excellent failover and redundancy on Azure with over 50 Azure regions all over the world.

Identity Management

Simplify your ID management process with Azure Active Directory (AD) by providing a single sign-on (SSO).

Infrastructure Management

Meet the growing needs of your business with highly available, secure, and scalable infrastructure on Azure cloud.

Ready-Made Azure Images

Apps4Rent offers over 200 Azure VM images which can be downloaded and used instantly from Azure Marketplace.

Get Over 200+ Ready-Made Azure VM Images at Apps4Rent

Apps4Rent offers over 200 ready-made Azure images which can be used instantly after downloading it from Azure Marketplace for free. If you want to use a particular application on Azure, we have created easy-to-download OS-compatible package which can save you a lot of installation hassles.

We have packaged over 200 open-source applications which covers a wide range of domains such as Content Management System, CRM, Database, Infrastructure, Platforms and more. Our Azure images are used by top companies including Citrix, Capgemini, Exxon Mobil, ICICI Bank, Palo Alto Networks, Telstra and more.

Check if your application is available here.

Companies using our Azure solutions

Companies using our Azure solutions

Apps4Rent's Azure Support vs Microsoft Support

If you opt for Apps4Rent's Azure Support, you get the most out of your Azure investments. Our Azure Support is better than Microsoft Support. Here's why:

Features Apps4Rent Microsoft
Anti-Malware/Antivirus Protection
24/7 Monitoring
Managed OS Hardening
OS Layer File Integrity
Expert Configuration
Unlimited Server Administration
Disaster Management Infrastructure
OS and Application Management
Operating System Security Assessment
Proactive Maintenance
OS Patching
24/7 Expert Support to End-User
Monitoring Event Logs
Offsite Backups
Two-Factor Authentication
Migration Services
Infrastructure Support for Azure

Why Apps4Rent for Issabel PBX Cloud Hosting?

  • No expensive infrastructure required to host the solution on-premises.
  • A cloud-native solution capable of direct routing via Teams and other applications.
  • Integrate the solution with existing systems for improving resilience.
  • Customize the solution with industry modules/add-ons of your choice.
  • Deployed on servers equipped with enterprise-grade SSD (Solid State Drive Storage) drives in top tier SSAE 16 datacenters or Azure with a 99.9% uptime guarantee.
  • Use any device including laptops, desktops, mobile phones, VoIP (Voice Over Internet Protocol) phones, and landline instruments.
  • Transfer calls anywhere without geographical/device restrictions.
  • Integrate with any VoIP provider/PSTN (Public Switched Telephone Network) carrier of your choice for local numbers.

Frequently Asked Questions (FAQs):

1. How is a cloud-based phone system different from our existing on-premises PBX solution?

Unlike on-premises business phone solutions that require capital investment and expertise in installing and managing complex hardware, cloud-based phone systems leverage the technology and network infrastructure owned, managed, and delivered as a service over the internet by service providers such as Apps4Rent. This reduces expenses and removes hardware management hassles.

2. Who is Apps4Rent hosted Issabel solution ideal for?

Apps4Rent hosted Issabel cloud PBX solution is ideal for businesses with distributed workforces. Here are some of the use cases for the solution.

3. What are some of the distinguishing features of a hosted Issabel cloud PBX solution?

Here are some of the key features of the Apps4Rent hosted Issabel cloud PBX solution.

4. What are the requirements for deploying the Issabel cloud PBX solution?

Issabel cloud PBX runs on CentOS 7 and supports 7th gen Intel hardware. Asterisk 11 and Asterisk 13 can be used as the base environment. However, no PBX hardware or technical expertise is required for an on-site setup of the Apps4Rent hosted Issabel cloud PBX solution.

5. Is any special equipment of router required for the Apps4Rent hosted Issabel cloud PBX solution to work?

No special telephone lines or PBX hardware is required for the solution to work. However, as an open-source solution, most existing platforms can be configured to work with the solution. It is advisable to have a QoS (Quality of Service) enabled router to ensure optimal call quality when the internet bandwidth is shared for other activities.

6. Is SIP trunk service included with the solution?

No. However, we can add the service at an additional cost.

7. Will the solution work even during power cuts or internet loss?

Yes, the Apps4Rent hosted Issabel PBX solution is a cloud-native service that can be configured to work independently of your power and internet connection. Calls to office/ desktop phones can be forwarded to mobile phones to ensure that you can keep your operations running.

8. How secure is this solution?

Our solution is significantly more secure than traditional PBX systems. There are separate security modules for Issabel that can be used to set up and configure firewalls to enable port knocking. With this setup, ports can be opened externally to the internet while keeping the firewall closed.

9. Can a call be transferred off-site?

Yes, calls can be transferred to an external number through IVR. It is even possible to transfer an on-going call to an external number using a process that is similar to redirecting calls to an internal extension.

Carl, System Admin, Tampa, Florida

"I love being able to answer the phone anywhere with the new system that our company has provided. Issabel PBX has fabulous features and great sound quality. I have a had great experiences with Apps4Rent customer service! Michael, Post Hill Counseling, LLC"

Andres, Developer, St Louis, Missouri

"Customer service is one of my very favorite reasons why we are still with Apps4Rent. We have some unique deployment features we needed and Apps4Rent Issabel CLoud PBX was able to accommodate almost all of them. Joanne, AWHC, Nevada"

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