Saturday 26 August 2017

Introduction to Asterisk, an open source VoIP platform

Asterisk is an open source, widely used VoIP communications server. It offers all modern PBX features, as compared to traditional hardware based PBX systems. This software can be installed on most used Linux flavors like Ubuntu/CentOS.

Many small to medium sized companies and organizations uses this software based PBX system. The following are some examples of use cases:

1. As IVR application
- For developing Interactive Voice Response service, IVR is application in which customer dials given public phone number and call is answered by scripted dial plan in Asterisk, it may be like "Welcome to company, press 1 for sales, press 2 for support", and on appropriate DTMF(keypad) input call can be bridged to concern person. Many more application can be built with this IVR as per our need and imaginations.

2. Call broadcast service
- In some cases people may need to broadcast some important message or offers to thousands of people in that case one can do call broadcast to target audience, and upon answer the call person can listen prerecorded message.

3. Conferencing solution
- Asterisk offers conferencing capability, in that all users can join to single conference room and can talk to each other, no matter where the person currently is. Remote members can join to common conference room and can talk on important discussion.

4. Call Center solution
- Here, to manage too much call traffic this solution can be used, when customer dial on public phone number it can be hold in Queue if all call center agents are busy, and once agent becomes free, call can be routed to available agent to answer. This way company
don't loose customer and can be answered as soon as possible.

5. Asterisk and CRM integrations
- Nowadays, many people integrate this powerful Asterisk server with their CRM system also, so callerID identification, screen popup when call comes from specific callerID, callerID lookup and authenticate call like cool features can be achieved.

6. Public telephone network connectivity to Asterisk
- Today SIP trunking, PRI line integration with Asterisk are possible, so these public telephone lines can be patched to Asterisk PBX and we can get global reach with this technology.

Well, above are the mainly used use cases of Asterisk system, we can do many more applications and use cases, as per our need and imaginations.

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