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The Articles explains how to set up call screening 

Created: March 2020

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Step 1. Create a separate Dialplan

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procedure 

Anchor
step1 step1

First you need , create a procedure to deal with declined calls:

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In this case, the call is sent to the called user voicemail (3 digit extension), but you can do whatever you want with the callit can be configured in any other way.

Step 2. Create audio files

Then you need to have Create 3 audio files:

1. priv-recordintro -> ask the caller to record their name, “please say your name after the tone, when done press #”
2. priv-callpending -> announce the called user that there is a call coming, “this is a call from -recorded name- “.“ (the caller's name recorded on the previous step is pronounced here)

3. screen-callee-options -> let the called user know the options, “to accept the call press 1, to decline it press 2.                 “

   , it

   . 

   Warning
   It is important to have a couple of seconds of silence at the end of the audio to give the called user time to select an option.

   
   

All of the files need to be named as showed and be placed in /var/lib/callweaver/sounds/ folder. 

mv /var/lib/callweaver/sounds/00000/priv-callpending.* /var/lib/callweaver/sounds

Step 3.

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Set up call screening

Finally, to dial the target extension, we need to add this Dialplan:add the following Dialplan applications in users Dialplan (or in any Dialplan users are using). In this case, all 3 digit extensions will have “call screening”:are screened:

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• Custom Application -> Dial(SIP/${EXTEN},,p)

Dial the user using call screening.

• Jump to if -> “$> "${HANGUPCAUSE}"="16"

If the called user declines the call, the HANGUPCAUSE  is 16, so we do a jump Dialplan proceeds to the separate procedure that deals with declined calls ("screen" in our case, created in Step 1 of this guide).

• Hangup -> Reason 16

If the called user accepted accepts the call, we need to be sure to hang up the application hang ups once the call is done.

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