The VoIP platform for corporate communication

Who is it designed for?

Small and Midsized Businesses

If you are a small or midsized business, discover the KalliopePBX solutions dedicated to you!


Rackmount or virtualized environment? KalliopePBX meets the needs of large companies.

Public Sector

There are already many public sector bodies that have chosen KalliopePBX, what are you waiting for?

Call Center

Find out more about the Kalliope module designed specifically for Call Centers!

Kalliope PBX model range

KalliopePBX is offered in a complete range of appliance and VM models, designed both for micro-enterprises, the enterprise market and Public Sector .
Strengths: a wide choice of basic and advanced functions combined with a rich suite of applications and add-on modules for both Desktop and Mobile switchboards.

Ultimate hardware model solutions, designed for large businesses and the public sector with hundreds of extensions, guaranteeing up to 120 simultaneous calls.

  • 1.6GHz Quad-Core processor
  • 4Gb of RAM (V4R )
    8GB of RAM (V4R +)
  • 60Gb SSD (V4R) 128 Gb SSD (V4R +)

The PBX doesn’t limit the number of lines, extensions, or other configurable services, offering you flexibility and freedom to manage users.

KalliopePBX V4R and V4R + also use entirely fanless hardware and even more performance thanks to the 1.6 GHz Quad-Core processor.

V4R+ comes with more RAM and SSD. It is the only hardware model that supports multi-tenant licenses, allowing you to offer PBX services to multiple clients via a single interface.

Compare hardware models

1,6 GHz
1,6 GHz
StorageSSD 60 GbSSD 128 Gb
Simultaneous calling*120120
Extremely reliableYESYES
High Availability YESYES
Call recording YESYES
Dimensions340 x 255 x 46 mm + rackmount brackets340 x 255 x 46 mm + rackmount brackets
Power supply (Max)15W15W
Optional client licencesCTI Desktop, mobile App, Attendant ConsoleCTI Desktop, mobile App, Attendant Console
Switchboard add-on modulesCall Center, FAX, HotelCall Center, FAX, Hotel, Multitenant
Optional in-Cloud Services Kalliope LAM, VSBC Kalliope LAM, VSBC
Remote extensionsYESYES

* Indicative values estimated in the absence of media channel transcoding and subject to re-evaluation in call center scenarios and more generally in the case of complex dial-plans.

You can count on minimal costs and consumption with the perfect mix of small size and advanced features without making concessions. Using entirely fanless, strong performing, and reliable hardware:

  • 1GHz Dual-Core processor
  • 4Gb of RAM
  • 16Gb SSD


Kalliope PBX MINI, Kalliope’s competitively priced entry-level option, offers all the advantages of VoIP and most of Kalliope’s advanced features. It uses the same hardware as LITE with software limitations. Ideal for micro-businesses

Mini offers:

12 SIP accounts – 4 external channels – 1 IVR level – 2 call groups – 1 call waiting queue

Upgrade Mini to Lite

The firmware level is the only limitation of the Mini. You can unlock and remove restrictions by purchasing a LITE upgrade license.


A light, highly scalable, and expandable product that boasts low power consumption.
This solution is unlimited and guarantees up to 25 simultaneous calls. KalliopePBX LITE is equipped with all of Kalliope’s advanced features and supports all desktop and mobile applications.

Lite provides all of the features of Mini Plus:

Unlimited Extensions – KCTI Desktop, KCTI Mobile and Attendant Console Licenses – Kalliope Fax License – Remote Extensions – CallCenter Module – Hotel Module – High Availability – LDAP – Call Recording

Compare hardware models

1 GHz
1 GHz
StorageSSD 16 GbSSD 16 Gb
Simultaneous calling*1025
Extremely reliableYES
High Availability YES
Call recording YES
Dimensions168 x 157 x 30 mm168 x 157 x 30 mm
Power supply (Max)7W7W
Optional client licencesCTI Desktop, CTI mobile app, Attendant Console
Switchboard add-on modulesUpgrade Mini to LiteCall Center, FAX, Hotel
Optional in-Cloud ServicesKalliope LAM, VSBC
Remote extensionsYES

* Indicative values estimated in the absence of media channel transcoding, subject to re-evaluation in call center scenarios and complex dial-plans

KalliopePBX is available as a Virtual Machine (VMWare and Xen, Proxmox, KVM), and, as with the hardware versions, there is no limitation on the number of users.

Licenses, starting with a minimum of 5, are available based on your external channel requirements. All use the same firmware to offer Kalliope’s features to even the smallest business.
Server space depends on the number of users, active services, and external channels.

All client licenses, add-on modules, and optional Cloud services are available for purchase and installation with the different VM types.
They also fully support multi-tenant features you can unlock by purchasing an additional license.

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