Mini automatic telephone exchange Asteriks. What equipment to choose and where to buy?

Question

Asterisk

Good afternoon.
There was a need to install a mini PBX for subsequent connection with the iiko program (supports the sip protocol). The choice fell on Asterisk FreePBX. Needed for 2 people (delivery operators). With the choice of server, everything is clear, but with the choice of equipment, I got a little confused. We have one analog city line and two mobile phones. You also need two headsets. What boards and headsets to choose and where is it better to buy?

Answer 1

You need an expansion board with one FXO port (red daughter ...
And a GoIP gateway for 4 SIM.
As for the brand, it's best to take Digium - this is the Asterisk developers.

Answer 2

For analog input - Digium TDM401E (PCI) or AEX401E (PCI Express).
GSM-gateway OpenVox WGW1002G
Hardware or software IP phones for employees.
With headsets it is not clear where you will connect them?