PIONEERPOS G24-LC manual TCP/UDP IP Connection, System Overview

Chapter 1: Product Features

TCP/UDP IP Connection

Overview

The network capabilities are achieved by using different layers of connections. Every layer of connections provides basic connections to the layer above it. The higher the layer is, the more capabilities it can provide.

TCP/UDP IP Connection

Internet Site

www...

World Wide Web

Terminal

RS232

GPRS

GSM/

Gateway

AT Commands

G24-L

GPRS PPP Connection Signaling

Figure 1-1: System Overview

The three layers of connections are:

•Physical links

•Point-to-point links

•TCP/UDP links

TCP/IP

When establishing the TCP/IP connection the G24-L can only be the "initiator". The TCP/IP feature enables the G24-L to be a wireless end point for a TCP/IP socket.

Note: The TCP protocol use the value TTL (Time to live) = 64.

Creating TCP/IP Connections

Connection from the G24-L to the Web

The following occurs when creating a TCP/IP connection from the G24-L to the Web:

1.The G24-L connects to the GPRS network and receives an IP address (using the +MIPCALL command).

April 15, 2008 G24-L AT Commands Reference Manual 1-5