Multitech MTCMR-H User's Guide download pdf (Page 7)

Chapter 1– Introduction

High Speed HSPA-H4 AT Commands Reference Guide (Document S000483A) 7

Chapter 1 – Introduction

This document describes standard and proprietary AT commands available for UMTS mobile broadband devices

and intelligent embedded modules. Standard AT Commands are covered in Part 1 of this document. Proprietary

AT commands are supplemental to the standard AT commands and are covered in Part 2 of this document.

Standard 3GPP AT commands for UMTS devices are described in the following 3GPP (3rd Generation

Partnership Project) standards documents:

• TS 27.007 AT command set for User Equipment (UE)

• TS 27.005 Use of Data Terminal Equipment -- Data Circuit terminating Equipment (DTE-DCE)

interface for Short Message Service (SMS) and Cell Broadcast Service (BSE)

Some standard 3GPP commands are NOT supported, or are partially supported. These commands are identified

in the Table of Supported GSM/WCDMA AT Commands.

Escape Sequence Guard Time

The AT escape sequence “+++” requires a guard time of 1.0 seconds before and after it is used.

Result Codes

Result codes are not shown in the command tables unless special conditions apply. Generally, the result code

OK is returned when the command has been executed. ERROR may be returned if parameters are out of range

and will be returned if the command is not recognized or is not permitted in the current state or condition of the

modem.

Conventions

The following format conventions are used in this reference:

Character codes or keystrokes that are described with words or standard abbreviations are shown within

angle brackets using a different font, such as <CR> for Carriage Return and <space> for a blank space

character.

Numeric values are decimal unless prefixed as noted below.

Hexadecimal values are shown with a prefix of 0x, i.e. in the form 0x3D.

Binary values are shown with a prefix of 0b, i.e. in the form 0b00111101.

Command and register syntax is noted using an alternate font: !CHAN=<c>[,b]. The “AT” characters are not

shown but must be included before all commands except as noted in the reference tables.

Characters that are required are shown in uppercase; parameters are noted in lowercase. Required

parameters are enclosed in angle brackets (<n>) while optional parameters are enclosed within square

brackets ([x]). The brackets are not to be included in the command string.

Commands are presented in table format. Each chapter covers the commands related to that subject and

presents a summary table to help you locate a needed command. Commands are in ASCII alphabetical

order in the body of each chapter.

Any default settings are noted in the command tables. Note that these are the factory default settings and not

the default parameter value assumed if no parameter is specified.

1 2 3 4 5 6 7 8 9 10 11 12 ... 146 147

No comments

Multitech MTCMR-H User's Guide Page 7