... 115200bps Detailed Product Description 1.TTL MC52I GSM/GPRS SMS modem 2.900/1800MHZ 3.with TCP ... /IP stack 4.PPP,TCP, UDP, HTTP, FTP, SMTP, POP3 TTL GSM ... UDP, HTTP, FTP, SMTP, POP3Comply with ETSI GSM phase 2+3V SIM card slotTTL interfaceSIM Application ... SMS cell broadcast•Text and PDU mode•Specification for fax:Group 3, class 2 and class 1• TTL MC52I GSM/GPRS SMS ...