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S20 vs S412

PeterK

November 05, 2019 19:10

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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

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4 comments

• 1
  
  Vladislav Sukhorukov November 05, 2019 20:24

  1. no, concurrent calls = simultaneous (parallel) calls. U can connect 20 phones, but simultaneously can speaks maximum 8

  2. no, U have to buy S2 or SO module for conencting fax

• 0
  
  PeterK November 05, 2019 20:32

  Thank you for your reply

  Ok but the product page says

  S20
  20 users
  10 Concurrent Calls

  S412
  8 VoIP Users
  8 Concurrent Calls

  I understand that with the concurrent calls but I am confused by 20 Users and 8 VoIP Users.
  On the product page of the S412 is nothing about 20 phones :(

   

  2. To avoid missunderstandings, out of the box the ports from the S20 /S412 PBX are without any functions (except the LAN Ports)

• 0
  
  Riddhe M November 06, 2019 07:47

  don't quite understand point 2. The only way to connect fax machine is to use the FXS port. As Vladislav mentioned. S2 module is needed.

• 0
  
  Richard Tong October 15, 2020 17:30

  Ok I'm still confused, the S412 has 12 FXS ports and only 2 modules for FXS, so how do you populate them all?