... :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/GPRS modem MODEL:G-52TTLGeneral FeaturesIndustrial designAluminum casingWireless access to internetBased on ... •Text and PDU mode•Specification for fax:Group 3, class 2 and class 1• TTL MC52I GSM/GPRS SMS MODEM in good quality