MC52i is GPRS module: Multislot Class 10 Full PBCCH support Mobile Station Class B Coding Scheme 1 - 4 GSM / GPRS features of MC52i: Data transfer GPRS:Multislot Class 10 Full PBCCH supportMobile Station Class BCoding Scheme 1 - 4 CSD:V.110, RLP, non-transparent2.4, 4.8, 9.6, 14.4kbpsUSSDPPP-stack for GPRS data transfer SMSPoint-to-point MT and MOCell broadcastText and PDU modeStorage: SIM card ...