... SIM card rotation 32 port gsm fwt (gsm gateway), fixed wireless terminal ,bulk sms machine BL-32KGDT01 32 port gsm fwt (Fixed wireless terminal) Spot light :1.32com ... is over ,device automatically change to another SIM card ).4.IMEI changing ,phone LCD will display the IMEI number ... ordinary telephone set, PBX , VOIP Gateway, Billing meter etc.;4) It is compatible with Wavecom and Simens open AT5) ...