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Asterisk Office PBX


The right telephone system can improve the efficiency and productivity of everyone in your organization, simplify the flow of information and allow you to take advantage of the latest communications technology capabilities.

A range of telephones are available with the Asterisk office pbx system, familiar office digital desksets, wireless handsets and advanced IP telephones, including an IP-based softphone that works on your PC and software to dail from your desktop or Microdoft Outlook.

  • Based on open source

  • Voice over IP technology

  • Customized for your business needs

  • Professional customer service

  • Proven customer experience

  • On site training

Asterisk™ is a complete PBX . It runs on Linux and provides all of the features you would expect from a PBX and more. Asterisk™ does voice over IP in three protocols, and can interoperate with almost all standards-based telephony equipment using relatively inexpensive hardware.

Asterisk™ provides Voicemail services with Directory, Call Conferencing, Interactive Voice Response, Call Queuing. It has support for three-way calling, caller ID services, ADSI, SIP and H.323 (as both client and gateway).

Asterisk™ needs no additional hardware for Voice over IP. For interconnection with digital and analog telephony equipment, Asterisk supports a number of hardware devices, most notably all of the hardware manufactured by Asterisk's™ sponsors, Digium. Digium has single and quad span T1 and E1 interfaces for interconnection to PRI lines and channel banks as well as a single port FXO card and a one to four-port modular FXS card.

Asterisk™ supports a wide range of TDM protocols for the handling and transmission of voice over traditional telephony interfaces. Asterisk™ supports US and European standard signalling types used in standard business phone systems, allowing it to bridge between next generation voice-data integrated networks and existing infrastructure. Asterisk™ not only supports traditional phone equipment, it enhances them with additional capabilities.


Asterisk™ Features

Asterisk™ based telephony solutions offer a rich and flexible feature set. Asterisk™ offers both classical PBX functionality and advanced features, and interoperates with traditional standards-based telephony systems and Voice over IP systems. Asterisk™ offers the features one would expect of a large proprietary PBX system such as Voicemail, Conference Bridging, Call Queuing, and Call Detail Records.

Telephony Services:


  • Voicemail System

    • Password Protected

    • Separate Away and Unavailable Messages

    • Default or Custom Messages

    • Multiple Mail Folders

    • Web Interface for Voicemail Checking

    • E-mail notification of Voicemail

    • Voicemail Forwarding

    • Visual Message Waiting Indicator

    • Message Waiting Stutter Dialtone

  • Auto Attendant

  • Interactive Voice Response

  • Overhead Paging

  • Flexible Extension Logic

    • Multiple Line Extensions

    • Multi-Layered Access Control

    • Direct Inward System Access

  • Directory Listing

  • Conference Bridging

    • Unlimited Conference Rooms

    • Access Control

  • Call Queuing

  • ADSI Menu System

    • Support for Advanced Telephony Features

    • PBX Driven Visual Menu Systems

    • Visual Notification of Voicemail

  • Call Detail Records

  • Local Call Agents

  • Remote Call Agents

  • Protocol Bridging

    • Provides seamless integration of technologies

    • Offers a unified set of services to users regardless of connection type

    • Allows interoperability of VoIP systems

Call Features:


  • Music on Hold

  • Music on Transfer

    • Flexible mp3 based system

    • Volume Control

    • Random Play

    • Linear Play

  • Call Waiting

  • Remote Call Pickup

  • Do Not Disturb

  • Caller ID

  • Caller ID Blocking

  • Caller ID on Call Waiting

  • Call Forward on Busy

  • Call Forward on No Answer

  • Call Forward Variable

  • Call Transfer

  • Call Parking

  • Call Retrieval




  • TDMoE

    • Allows Direct Connection of Asterisk PBX

    • Offers Zero Latency

    • Uses Commodity Ethernet Hardware

  • Voice over IP

    • Allows for Integration of Physically Separate Installations

    • Uses commonly deployed data connections

    • Allows a unified dialplan across multiple offices


Voice over IP Interoperability:

Asterisk™ provides transparent bridging between Voice over IP protocols and traditional telephony equipment. In addition, Asterisk can transfer calls from one system to another via the Inter-Asterisk™ eXchange (IAX™) protocol.


  • Inter-Asterisk™ eXchange (IAX™)

  • H.323

  • Session Initiation Protocol (SIP)

  • Media Gateway Control Protocol (MGCP)


Traditional Telephony Interoperability:


  • Robbed Bit Signaling Types

    • FXS and FXO

    • Loopstart

    • Groundstart

    • Kewlstart

    • E&M

    • E&M Wink

    • Feature Group D

  • PRI Protocols

    • 4ESS

    • Lucent 5E

    • DMS100

    • National ISDN2

    • EuroISDN

    • BRI (ISDN4Linux)


Codec Support:


  • GSM

  • G.729 (available through purchase of commercial license(s))

  • G.723.1 (pass through)

  • Linear

  • Mu-Law

  • A-Law


  • G.726

  • ILBC

  • LPC-10

  • MP3 (decode only)

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