FXO Module
O2 Module | 2 FXO Ports | Connect 2 analog PSTN (POTS) lines.
View ProductPSTN Lifeline
SO Module | 1 FXS Port & 1 FXO Port | Unique PSTN Fallback Function.
View ProductGSM Module
GSM Module | 1 GSM Channel | 1 Channel for GSM Voice Calls Frequency: 850/900/1800/1900 MHz (quad-band).
View Product3G Module
3G Module | 1 WCDMA Channel | 1 Channel for WCDMA Voice Calls Frequency: 900/2100 MHz, 850/2100 MHz, 850/1900 MHz.
View Product4G Module
4G LTE Module | 3G/4G Voice Call & Data | Insert 4G module on Slot_1 of S20&S50 and Slot_1 of EXP 1 of S100 & S300.
View ProductD30 Module
Expand System Capacity | Add 100 VoIP Users & 30 Concurrent Calls | Supported Model: S100, S300, P560 & P570
View ProductEX08
EX08 has 4 onboard module slots and 8 interfaces on the panel | Supported Model: S100 and S300
View Product