How is the call from the site technically performed? What hardware and software is required?

How is the call from the site technically performed? What hardware and software is required?

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Technology
It technology
Telephone communications

Hello, tell me, can anyone come across, or work in this area, how is the call technically implemented? I mean what equipment and software are required. I would like to find a person associated with this field, it is very interesting to know some points, one question does not ask everything.

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answers (1)

Answer 1
August, 2021

I talked to a new acquaintance. To anyone interested, in theory this is a Virtual PBX, further development of communication, for example, Rest API with PBX.

To implement VPBX (Virtual PBX), you can use the following link:

  1. Asterisk (free)
  2. Convenient management interface like FreePbx
  3. SIP phone or softphone with headset.
  4. Trunk connection from any provider or GSM gateway (GSM if there is no landline number or you need a mobile number, if there is a landline number, then VoIP gateway).

That is, in theory (for now, since in my free time I will still try to implement it), an asterisk + external telephony output (point 4).

FreePBX as I understand this is a control panel server Asterisk (for myself I will rather try without it, I want to deal with asterisk myself, so as not to depend on third-party developments, and there will be more understanding, maybe other ideas for using VPBX will appear).

SIP phone or softphone (mobile application), for calls. That is, without it, you will not be able to receive calls.

As I understand now, even calls in instant messengers (WhatsApp, Viber, Skype, Telegram, etc.) work from PBX. Only without an external number, using virtual accounts. Of course, they rather use their own developments, instead of Asterisk. :) but the essence is the same.

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