... ) 1. The Modem based on mc39i (900/1800mhz) without tcp/ip stack Industrial design. Aluminum casing. Wireless access to internet. Comply with ... multi-frequency function (dtmf). Send and receive data, fax, e-mail, sms. Fax group3, class 1,2. Maximum transmitting speed 115kb/s ... , rs232 cable, antenna, 2 mounting plates, cd. RS232 GSM /GPRS modem with siemens MC39I module