... . With standard RS232 or USB(optional) interface, easy connection with PC;Embedded TCP/IP protocol, make convenient theremote, ... 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 ... data rate of 1,200~115,200bits/s;USB: USB2.0;Support full AT commands;l Other ...