[asterisk-users] How to invoke a binary file from the dial plan?

[Kevin Larsen]

> Hi everyone.
> 
> I'm new with Asterisk and I have to create a dial plan that will 
> invoke a binary code. That is, asterisk will execute a program in 
> the same machine. How to do it?
> 
> Let me explain what I have to do:
> 
> In the project that I am currently working, there is smartphones, 
> SIP servers and doors/gates to be unlocked remotely. When the user 
> executes an application on his/her phone, it will presents a button 
> to unlock a remote gate or door.
> By  pressing such button, the application will send a SIP INVITE to 
> the SIP server (Asterisk). In this moment, a existing dial plan 
> should call an executable hosted in the current machine. In this 
> case I need to know how to program my extensions.conf to let 
> Asterisk invoke another software to me.
> The another software is the one responsible for unlocking a gate or 
door.
> 
> So, how to codify my extensions.conf in order to make Asterisk 
> invoke another software?
> Is another better way (idea) to implement my project using Asterisk 
> and SIP? If so, comment, please!
> 
> Any hint will be very helpful!

Look into the System() dialplan application. It will execute a command on 
the system for you. Be aware that it will execute it as the user your 
Asterisk instance is running as, so permissions can sometimes be a bit 
finicky to get correct. I do something similar to pop my gate open. It is 
using nc to make a connection to the device, but same general idea as what 
you are doing.
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