Create Local Extensions And Make Interior Calls; Fxs Extensions - ATCOM APBX IP2G4A User Manual

APBX IP2G4A User Manual

3. Create local extensions and make interior calls

There are two kinds of extensions in APBX: FXS extensions and SIP extensions.

3.1 FXS extensions

It needs support of FXS module, the module installed in IP2G4A can be:
AX210S: dual FXS port
AX210XS: one FXO port and one FXS port
Analog phone is available to make calls once connected to the corresponding FXS port, APBX configures FXS
extension automatically when FXS module is detected. FXS extension can't be deleted. The extension number is
defined in PBX Settings -> Options -> Extension Preference, changing it can change the FXS extension number.
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