... standard RS232 or USB(optional) interface, easy connection with PC;Embedded TCP/IP protocol, make convenient theremote, high-speed and transparent data ... one party or sending to multi parties;With access to data center fixed IP address, dynamic domain name analysis and virtual ... GPRS: GPRS Class 10, Coding:CS1-CS4, embedded TCP/IP Protocol;Data CSD: Transmissions rates 2.4, 4.8, 9.6, 14.4Kbps;Data Fax ...