Multitech MMCModem GPRS (MTMMC-G) Instrukcja Użytkownika Pobierz pdf (Strona 5)

Chapter 1 – Introduction

Multi-Tech Systems, Inc. IP Connectivity AT Commands for GPRS-F4 Wireless Modems (PN S000437C) 5

AT Command Syntax

Command Line

Commands always start by the standard prefix AT+WIP and end with the <CR> character. Optional

parameters are shown in brackets [ ].

Example:

AT+WIPcmd=<Param1>[,<Param2>]

<Param2> is optional. When the AT+WIP command is executed without <Param2> the default value

of <param2> is used.

Information Responses and Result Codes

Responses start and end with <CR><LF>, except for the ATV0 DCE response format and the ATQ1

(result code suppression) commands.

• If the command syntax is incorrect, the ERROR string is returned.

• If the command syntax is correct but transmitted with the wrong parameters, the +CME

ERROR: <Err> string or the +CMS ERROR: <SmsErr> string is returned with adequate error

codes if CMEE was previously set to 1. By default, CMEE is set to 0, and the error message

is only ERROR.

• If the command line has been executed successfully, an OK string is returned.

In some cases, such as AT+CPIN? or (unsolicited) incoming events, the product does not return the

OK string as a response.

In the following examples <CR> and <CR><LF> are intentionally omitted.

Principles

WIPSoft is an Open AT

application that implements the TCP/IP protocols using custom AT

commands. This Open AT

application operates in co-operative mode and must be downloaded to

the Wavecom Wireless CPU

. The commands are sent from an external application and the

corresponding responses are sent back from the Wavecom Wireless CPU

to the external

application. WIPSoft uses the APIs provided by wipLib and provides custom AT command interface to

the external application.

AT+WIP commands involve:

• A host computer, which issues AT+WIP commands

• Wavecom’s wireless CPU

• The rest of the Internet / Intranet

AT Commands

Wavecom

WCPU

Host

CPU

UART INTERNET

1 2 3 4 5 6 7 8 9 10 ... 43 44

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