DINSTAR DWG200x series are the VoIP GSM/ CDMA gateway which types are : 1. DWG2001 ( 1 x simcard) 2. DWG2004 ( 4 x simcard) 3. DWG2008 ( 8 x simcard) Support Dualband GSM and CDMA band ( Flexi & Esia) in Indonesia and already lunch the combination 4 GSM + 4 CDMA gateway unit. Compatible with MITEL, AVAYA, IPSmart