How to make the PBX virtually pick up the phone?

Question

Asterisk

Colleagues, good day!
The task is useful and can be useful to everyone.
There is FreePBX 12.
It is necessary to record specially conversations from ios, android mobile phones that can merge calls (make a conference). It's just that there are customers who take calls only from mobile numbers. A record of negotiations is needed by management.
The task seems to be simple to call the PBX, dial an extension, the answering machine will say that the recording has gone and then it is silent and records, we call our client and make a conference (combine calls) with our PBX.
How it is better to implement it? through the created Device (virtual exten)?

Answer 1

in FreePBX, custom dialplans are built using the Custom destinations module.
Create a Custom destination in the form my-custom,_X.,1
If IVR is used, you can place a greeting there, and add some number combination, indicating the destination to the created Custom destination
. If not, specify your Custom destination as the destination for the incoming route ( Inbound route)
Next, create a custom diaplan in the file /etc/asterisk/extensions_custom.conf
[my-custom]
exten => _X.,1,Answer
exten => _X.,n,Read(privetstvie,0,n) -
blah greeting blah blah. Just follow the documentation
exten => _X.,n,Hangup()