Introduction to Asterisk

In my internship I got chance to deal with AVAYA products,which are utilized in call centers.I did some projects on AVAYA as real customer solutions.Knowledge of Avaya systems leads me to develop a soft pbx system call Asterisk.

Asterisk is an “Open Source PBX software”.Asterisk can also be used as an application server for the existing PBX or it can be directly connected to PSTN. Asterisk can do services like voicemail, fax reception, call recording, IVR connected to a database, and audio conferencing server.The main feature of the Asterisk hardware is the use of the PC CPU to process media streaming, echo cancellation and transcoding.

Signaling protocols Asterisk supports:

• SIP
• H323
• IAXv1 e v2
• MGCP
• SCCP (Cisco Skinny)
• Nortel unistim

Asterisk is an open source PBX that acts like a hybrid PBX, integrating technologies such as TDM and IP telephony. Asterisk is ready for IVR (Interactive Voice Response) functionality and ACD (Automatic call distribution).