... /box AT+GSV SIM900 GSM GPRS module, Quad-band, industrial standard Sim900,SIM900 Simcom wireless module,Simcom modules,modulesGeneral features * Quad ... Text and PDU mode Software features* 0710 MUX protocol* embedded TCP/UDP protocol * FTP/HTTP( available at late July ... ( available at July ,2010)* MMS (available at July ,2010)* Embedded AT (available at Q3,2010) Specifications for Voice * Tricodec – ...