TTL GSM/GPRS modem Based on Cinterion module MC52I 900/1800MHZ with TCP/IP ... PPP,TCP, UDP, HTTP, FTP, SMTP, POP3 TTL GSM/GPRS modem General FeaturesIndustrial designAluminum casingWireless access to internetBased on Cinterion module ... -4• Specification for CSD dataTransmission:Up to 14.4 kbps•V.110•Non-transparent mode•USSD support• Specification for SMS:Point ...