Hello,
Can someone please explain to me briefly and exactly the difference between S20 and S412?
S412
2 module slots for internal extension
2 module slots for external lines
8 VoIP Users
8 Concurrent Calls
Up to 12 FXS Extensions
Up to 4 CO / BRI lines
S20
2 module slots for internal extension
20 users
10 Concurrent Calls
Up to 4 FXS / FXO / BRI ports
Up to 1 GSM / 3G / 4G Channel
1. That means with the S412 i can only use 8 IP Phones?
But it has more connections for analog devices
2. Can I connect an analog fax to the S412 or S20 immediately / out of the box or do I need for both the appropriate module additionally (S2 module)?
thank you for your help