VoIP PBX

•  Call recording with a Web interface to search recordings
• Voicemail and Voicemail-to-Email functionality
• Flexible IVR configurable by a Web Inteface.
• Voice synthesis support
• Extension Batch Tool to create large numbers of extensions using CSV files.
• Integrated Echo Canceller
• Phone provisioner, configurable via a Web Interface. Allows configuration of a large number of IP phones in a short time for supported phones.
• Support for video phones
• Hardware detection interface allowing quick & easy setup of a range of popular telephony hardware.
• ntegrated DHCP server to dynamically assign IPs to the IP-Phones
• Operator panel. Monitor PBX activity via a graphical interface and perform call transfers and parkings by a simple drag-n-drop. * Call parking allowing calls to be picked up at any extension.
• Call Detail (CDRs) report within you can search calls based on different criteria as date, extension number, etc

• Billing report from which you can filter by destination, source
• Report of channels used by technology (SIP, ZAP, IAX, Local, H323)
• Support for call queues including static and dynamic agents
• Conference Center. Allows setup of temporary scheduled conferences or static conference rooms via Web Interface * Support the following protocols: SIP, IAX, H323, MGCP, SKINNY, etc
• Supported codecs: ADPCM, G.711 (A-Law & μ-Law), G.722, G.723.1 (pass through), G.726, G.729 (through a commercial license), GSM, iLBC
• Support for analog interfaces as FXS/FXO (PSTN/POTS)
• Support for digital interfaces as E1/T1/J1 through protocols as PRI/BRI/R2 
• Support for bluetooth interfaces through cell phones (chan_mobile)
• Caller ID supported.
• Multiple Trunk support.
• Incoming and outgoing routes with support dial pattern matching which gives flexibility
• Follow-me support
• Support for ring groups
• Support for paging and intercom for supported IP Phones
• Support for call routing based on Time Conditions
• Support for PIN sets
• Direct Inward System Access (DISA) - Direct access to the PBX via External Line
• Callback * Web based file editor to manually edit the Asterisk configuration files
• Web based interface to the Asterisk console called the CLI

General

• Online and contextual embedded help, integrated to the administrative Web interface.
• Elastix is translated to 20 languages
• System resources monitor
• Network configurator
• The server can be shutdown from the Web
• Access control to the Web interface based on the ACL concept
• Interface to manage updates
• Backup/Restore
• Skins support
• Server date/time/timezone configurable from the Web

FAX

• Fax server based on HylaFax
• The fax functionality is administrable via Web
• Fax visor integrated. The faxes can be downloaded from the Web in PDF format *
• Fax-to-email application
• The email template (from fax-to-email) can be customized
• Access control for fax clientes (white list)
• Can be integrated with the WinprintHylafax plugin. This applications allows to print any document to a virtual fax from a Windows application.

Instant Messaging

• Instant Messaging (IM) server based on the Openfire project and integrated with Asterisk. It is based on the Jabber protocol which allows for compatibility with many Jabber clients.
• A call can be started from the IM client if you use the Spark client and have installed the Asterisk-IM plugin.
• The IM server can be configured from the Web from a friendly interface
• Supports groups of IM users
• Supports connection with other IM gateways like MSN, Yahoo Messenger, GTalk, ICQ, etc. This allows the user to connect to several networks from the same IM client
• Report of user sessions * Support for plugins to extend functionality
• LDAP support
• Support server-to-server connections to share users between two servers

Email

• Email server with multi-domain support
• Based in Postfix for high email volume
• Administrable via Web
• Interface to configure the Relay networks
• Web based email client based on the Roundcube project
• Support for quotas (the quotas are configurable via Web)

Collaboration

• Calendar integrated with the PBX with support for automatic voice notifications. That means that a call is generated when a notification is triggered
• Phone Book with click-to-dial capabilities
• Two CRM products integrated to the interface (vTigerCRM and SugarCRM)

Extras

• A2Billing integrated into the product to manage calling cards
• A complete CRM based on the vTigerCRM project
• Open Source version of SugarCRM integrated

Call center module

Elastix was the first distrobution that included a call center module with a predictive dialer, released enterely as [Free /Libre Software]. This module can be installed from the same web-based Elastix interface through a module loader.

The call center module can handle incoming and outgoing campaigns. Some features are:

• Open Source Predictive dialer
• Support for Do-Not-Call List
• Support for incoming and outgoing campaigns
• Forms can be associated to a campaign and designed through an Web wizard
• A "script" can be associated to a campaign
• Agent console
• Support for various types of breaks
• Advanced Reports

Support for telephony hardware

Elastix has a good support for telephony hardware. It includes drivers for the major manufacturers like:

• OpenVox
• Digium
• Sangoma
• Rhino Equipment
• Xorcom
• Yeastar

The most of these drivers are supported through the zaptel project or modified versions of it. Other drivers are supported by the mIDSN project and other projects.