I have seen a configuration on a router using:
#Dial -peer- voice 2222 Pots
#Destination pattern 22222
is POTS used only when configuring an analog phone plugged to FXS port ?
if it was a digital phone, would we replace POTS keyword with VOIP in the configuration above??
I also have seen a configuration between Routers, but they use VOIP
#Dial -peer- voice 2222 VOIP
so is between routers , it has to alwasy be VOIP and never POTS ??