I need a little clarity on did’s and sip’s.
True or False: A “did” is just a phone number, and a sip is a way of connecting the did to Asterisk? So if I buy a sip, I still need to buy a did?
Also from what I’m reading, if the above is true, if I buy one sip trunk (I think also called a port or channel (y/n)) and two did’s. Those two did’s can’t call at the same time, nor could I have two people call on the same did at the same time. I would have to buy as many trunks (ports, channels) as I want concurrent calls, correct?
Thanks! Sorry for the newb question >.<