I have recently installed and configured an a200 card 6 fxo ports. For testing purposes I have 2 lines connected. I haven't done any special configuration, almost everything is default except in "Office Hours" where I choose which ring group to use. So far in testing I have been able to make 2 simultaneous inbound and outbound calls and everything seems to work normally. My question is concerning the setting called Maximum simultaneous calls. the default is 1. But when I was first setting up my card sangoma support suggested I change this to the number of lines that I actually have and didn't really understand his reasoning why. Should I change this setting or leave it? And why?