KalliopePBX is available in a complete product line starting with KalliopePBX Mini, specifically intended for micro-enterprises (max 12 extensions), up to KalliopePBX V4R/V4R+, a high-profile solution designed for large enterprises and Public Administration.
For a middle ground, KalliopePBX Lite perfectly combines the functions and scalability of the Rackmount versions with the reduced costs and dimensions of KalliopePBX Mini.
KalliopePBX is also available as a Virtual Machine (VMWare and Xen). As with the hardware models, there is no limitation on the number of extensions. KalliopeVM licenses are distributed based on the number of external lines required, starting from a minimum of 5.


CPU Dual-core
1 GHz
1 GHz
1,6 GHz
1,6 GHz
RAM 4 GB 4 GB 4 GB 8 GB
Storage SSD 16 Gb SSD 16 Gb SSD 60 Gb SSD 120 Gb
Concurrent calls 25 25 120 120
Users 12
Lines 4
High Availability N/A Yes Yes Yes
Size 168 x 157 x 30 mm 168 x 157 x 30 mm 340 x 255 x 46 mm + rackmount brackets 340 x 255 x 46 mm + rackmount brackets
Power (Max) 7W 7W 15W 15W
Client Software Licenses Upgrade Mini to Lite CTI, Phone, Attendant Console CTI, Phone, Attendant Console CTI, Phone, Attendant Console
Control panel add-on modules -- Call Center, FAX, Hotel Call Center, FAX, Hotel Call Center, FAX, Hotel
Remote extensions N/A Yes Yes Yes


All KalliopePBX models offer a wide range of default functionalities, for telephones and beyond

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Everything you need

Basic features (protocols)

  • SIP v.2.0 (UDP, TCP and TLS transport)
  • Signalling (SIPS) and media (SRTP) encryption
  • ENUM support
  • Access control list (ACL)
  • External USB storage supported
  • SNMP support (v1/v2c)
  • LDAP support (both client and server) to access external phonebooks and/or phone devices
  • System for sending notifications on events
  • Dashboard widget for machine monitoring
  • Customizable "language packs"
  • License for co-branding of the web interface


Traditional telephone services

  • Blind and attended transfer
  • Unconditional call forward
  • Call parking
  • CCBS
  • DID (to an extension, a call group or an IVR menu)
  • Ring groups (simultaneous, sequential and hybrid mode)
  • Electronic lock
  • BLF (Busy Lamp Field)
  • Call pickup (explicit, for call-pickup groups and attended)
  • CDR (Call Log) filterable and exportable in CSV
  • Day/Night service
  • Blacklist service
  • "In progress" messages on IVR menu
  • Do not disturb service (DND - Do Not Disturb)
  • Real-time display of active calls on the PBX

Advanced telephone services

  • SIP/WebRTC video call (H263, H264, VP8)
  • Multi-level editable IVR *
  • Voice mailbox with e-mail notification and message delivery (as .wav)
  • Audioconference (with audio MCU)
  • One Number Many Devices
  • Boss-Secretary filter
  • Paging
  • Hot Desking
  • Automatic and custom outbound call routing thanks to the possibility to create unlimited ACR classes and assign a specific one to each user
  • Call Recording (unconditional or on demand, local or external) ***
  • Automatic Call Distribution (ACD) **
  • Call Admission Control for subnet
  • Integrated provisioning system for SIP phones devices (currently supported Snom phones, Gigaset Pro, Yealink, Cisco SMB, Escene and Audiocodes)
  • Definition of closed internal groups
  • Automatic sending of the call log
  • Integration with Xtelsio TAPI for Asterisk (allows integration with Estos ProCall)
  • Dynamic Routing Service
  • Forwarding on isolated PBX
  • "Closed groups" service
  • Integrated FAX module with FAX2Mail and Mail2FAX service **
  • Alerts Campain
  • Kalliope Hotel
  • Charge Documentation


Unified Communications

  • Database Connector that permits dynamic calls routing basing on the result of a query on an external database
  • Extensions phonebook, shared and personal contact phonebook (available for click-to-call and CSV import/export)
  • LDAP phonebook import
  • LDAP phonebook export
  • Mobility Extension (fixed-mobile convergence) using Forking-to-Mobile and Fast Transfer services
  • XMPP chat/presence
  • FAX Support (T.38 pass-through)
  • WebAPI, API Rest and AMI (Asterisk Manager Interface) for the integration with third-party applications
  • Kalliope-Lift module for managing alarm messages from ADEMCO combiners
  • Application rebranding support (KCTI Desktop and KCTI Mobile)
  • API REST for the export of CDR in "blues" format containing both outgoing calls and local and incoming calls, which can be filtered by category.


* KalliopePBX Mini has a single-level IVR menu
** KalliopePBX Mini admits a single waiting queue
*** Not available for KalliopePBX Mini