This is the setup:
4 lines in ====>>> Digitum Stuff ====>>> Phones
4 regular pots lines - will not change
4 line phone extentions (which type open to suggestion but prefer headset jack model)
ubuntu linux - setup seems straight forward and ok
The other things I need are call on hold, call que auto answer on hold, transfer calls between stations and call each station internally.
What type of card and/or other device am I looking for?
I know I need 4 ports in or 4 FXO card and an echo cancel module. Got that.
The phones will have all four lines, but the cards I see for 8 ports will give me 4 lines in, and 4 separate lines out for 4 single line extensions Digitum TDM800: 4FXO, 4FXS, echo module).
What else do I need to convert the 4 output lines to each of the four lines going into each phone?
In my mind, it’s like 4 ports FXO in, echo module, and 4 ports out with 4 lines each.
What am I missing?