White Paper T610/612

GPRS enables constant connection and high speed

With GPRS, the connection is maintained “constantly”, and data is transmitted in packets. Pricing of GPRS can be dependent on the actual use of bandwidth, which

means very low cost when no data is sent or received, while the phone remains connected. When transmitting large amounts of data, bandwidth can be increased automatically to allow faster transmission speed, up to 85,600 bps download speed.

AT commands support

This section outlines the AT commands supported by the T610/612. The information here can be of use for advanced users, to indicate the possibilities they have to:

develop new communications software

add the T610/ 612 to an application’s list of compati- ble modems

adjust the settings of their mobile telephone and modem

The modem in the T610/612 supports the V.25ter command set, which is the standard communication set used by modems.

The T610/612 is compatible with industry de facto extensions, ETSI 07.05, 07.07 and 07.10.

Overview of AT command functions

AT commands are used to configure the mobile telephone, to request information about the current configuration or operational status of the mobile phone, and to test availability and request the range of valid parameters, when applicable, for an AT command.

The built-in modem can be set to any one of three modes of operation. These are:

Off-line command mode

The command mode for entry of AT commands, when the device is first turned on.

On-line data mode

Allows “normal” operation of the built-in modem, for exchanging data or facsimiles with a remote modem.

On-line command mode

For sending AT commands to the built-in modem while

remaining connected to a remote modem.

The AT commands are grouped as follows:

Control and Identification

Call Control

Interface Commands

Data Compression

Mode Management

Audio Control

Accessory Menus

Accessory Authentication

Voice Call Control

Accessory Identification

GSM DTE-DCE Interface Commands

GSM Call Control

GSM Data

GSM High Speed Circuit Switched Data

GSM Network Services

GSM USSD

GSM Facility Lock

GSM Mobile Equipment, Control and Status

GSM Mobile Equipment Error Control

GSM SMS and PDU Mode

GSM GPRS

GSM Phonebook

GSM Clock, Date and Alarm Handling

GSM Subscriber Identification

Ericsson Specific AT Commands for GSM

MMI Settings

Voice Control

OBEX

WAP Browser

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Sony Ericsson T612 manual AT commands support