How many modules does S-Series VoIP PBX support? What kind of module can be installed? What’s the maximum number of modules allowed to be installed on each model of S-Series:

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  • How many modules does S-Series VoIP PBX support? What kind of module can be installed? What’s the maximum number of modules allowed to be installed on each model of S-Series:
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S412: 4
S20: 2
S50: 4
S100: 8
S300: 12

Model.Module S412 S20 S50 S100 S300
S2 Module Max. 2 Max. 2 Max. 4 Max. 8 Max. 12
O2 Module Max. 2 Max. 2 Max. 4 Max. 8 Max. 12
SO Module Max. 2 Max. 2 Max. 4 Max. 8 Max. 12
B2 Module Max. 2 Max. 2 Max. 4 Max. 8 Max. 12
GSM/3G/4G Module Max. 1 Max. 1 Max. 4 Max. 6 Max. 6

Note: only one channel can use cellular data of 4G LTE SIM card. And the 4G LTE module must be installed in the first slot of the EX08 Expansion Board in Span1.

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