Product features
Features :
-8 RJ11 ports.
-Supports up to 4 optional modules.
-Can add 2 expansion cards to S100, and 3 to S300.
-Support up to 4 optional modules / 8 ports, including O2, S2, B2, GSM, UMTS, and CDMA modules.
-Use to up 2 expansion cards on the S100 and up to 3 expansion cards on the S300.
