We have 4 people call us from around the country at once and it causes our phones to be busy.
We want to be able to have at least 8 people call us at once without anyone getting the busy signal. There will almost always be people calling each other internally, up to 10 at a time.
We have 4 analog lines coming into a Dell server that has a Digium AEX410PELF PCIe card in it.
Do I have to buy another one of these cards (or an 8 port version) or can I just configure Asterisk to handle more simultaneous calls somehow?
Is it as easy as adding the second card in and getting a few settings changed?
We will have the phone company install an additional 4 analog lines coming in for us if needed.