... balance notice, etc.. New GSM modem for bulk sms sending TM100 Key words: GSM SMS Modem, GSM Modem, SMS Gateway Brief DescriptionsTM100 DTU is a ... USB (optional) interface, easy connection with PC;Embedded TCP/IP protocol, make convenient theremote, high-speed and transparent data transmission ... 10, Coding:CS1-CS4, embedded TCP/IP Protocol;Data CSD: Transmissions rates 2.4, 4.8, 9.6, 14.4Kbps;Data Fax ...