Introduction
3
1 Introduction
This manual describes the operation of the AT commands supported by the T39 Telephone. The information
here is not relevant for day-to-day operation of the Telephone. This is described in the User Manual supplied
with the T39 Telephone.
The On-line Reference Manual is for advanced users who require detailed information in order to:
• Develop new communications software
• Add the T39 to an application’s list of compatible modems
• Adjust the settings of their mobile telephone
This manual is designed to supplement the Ericsson T39 Telephone User’s Manual.
All rights reserved.
© Ericsson Mobile Communications AB, 2001.
® Ericsson T39 is a registered trademark of Ericsson Mobile Communications AB.
® Windows is a registered trademark of the Microsoft Corporation.
All other registered trademarks used in this document are also acknowledged.
The standard text in this manual is modified to distinguish between the text displayed on the screen, typed
instructions and examples of command dialogue. The distinctions are as follows:
• Typed commands and option values are written in bold text; for example:
S2=
<esc>; <esc>=
0-127
• Any key strokes are written in bold text in brackets; for example
<CR>
• Examples of command dialogue, including keyboard entries and on-screen responses, are written in
Courier
text
• The default parameter setting used by a command is indicated by the text “
Default setting
”
The built-in modem can be accessed via Bluetooth, irDA, or RS-232 cable connection.
Standards
IrDA DATA with secondary implementation of IrLAP 1.0 and IrDA-Ultra, IRMC 1.1., ETSI 07.05, 07.07 and
07.10.
Fax specifications Group III, class 1 and 2. Class 2 is recommended. WAP 1.2.1.
Data rates (up to)
• 115,200 bits/s between phone and IrDA device (e.g. PC, another phone).
• 108,800 bits/s via Bluetooth (one time slot).
• 9,600/14,400 bits/s for GSM data communication, no compression. 38,400 bits/s for GSM data
communication with V.42bis compression
• 28,800 bits/s (receiving data) using HSCSD, no compression. 115,200 bits/s (receiving data) using HSCSD
with V.42bis compression
1.1 About this manual
1.2 Using this manual
1.3 Using the built-in modem in the phone