Nokia 7250 Installation instructions

SUPPORT GUIDE FOR

THE NOKIA PHONES AND AT

COMMANDS

Contents

1. INTRODUCTION..............................................................................................................1

2. BASIC AT-COMMANDS................................................................................................... 1

3. SENDING AND RECEIVING AN SMS ............................................................................. 2

SENDING AN SMS ..............................................................................................................2

RECEIVING AN SMS ........................................................................................................... 3

4. HIGHSPEED AT-COMMANDS ........................................................................................4

5. GPRS AT-COMMANDS ...................................................................................................6

Reproduction, transfer, distribution or storage of part or all of the contents in this document in any form without the

prior written permission of Nokia is prohibited.

Nokia and Nokia Connecting People are registered trademarks of Nokia Corporation. Other product and company

names mentioned herein may be trademarks or trade names of their respective owners.

Nokia operates a policy of continuous development. Nokia reserves the right to make changes and improvements

to any of the products described in this document without prior notice.

Under no circumstances shall Nokia be responsible for any loss of data or income or any special, incidental,

consequential or indirect damages howsoever caused.

The contents of this document are provided "as is". Except as required by applicable law, no warranties of any

kind, either express or implied, including, but not limited to, the implied warranties of merchantability and fitness

for a particular purpose, are made in relation to the accuracy, reliability or contents of this document. Nokia

reserves the right to revise this document or withdraw it at any time without prior notice

The availability of particular products may vary by region. Please check with the Nokia dealer nearest to you.

1. INTRODUCTION

How to read/write SMS, start a modem, HSCSD or GPRS connection with Nokia phones by

using AT-commands.

2. BASIC AT-COMMANDS

Before making a dial-up connection it is recommended to reset the modem in phone and also

set the flow control. If you have PIN-code request on it can be typed in also with AT-

command (I e Nokia Card Phone may need this when used in non Windows environment).

Below some useful AT-commands:

Check that the connection between the phone and device works AT

- should give OK for response

Reset the modem and set the factory defaults ATZ&F

No flow control AT&K[0]

Hardware flow control (CTS/RTS) AT&K3

Software flow control (XON/XOFF) AT&K4

Type in PIN-code in terminal AT+CPIN="pppp"

- where pppp is your pin code. Yes, the double quotes are needed

Check signal strength AT+CSQ

- value close to 0 means no field. Value 31.99 is maximum.

Start a data call ATDT nnnnnnn

- where nnnnnnn is the phone number.

Start a voice call ATDT nnnnnnn;

- where nnnnnnn is the phone number. Note the semicolon (;) is needed!

Hang up the call ATH

Answer incoming call ATA

During a call you can return to AT command interpreter with command +++ (three times

plus). Then you can give AT commands during a call. This is useful when calling to I e

banking service which requires you to enter information with keypad (especially when using

Nokia Card Phone).

1/6

3. SENDING AND RECEIVING AN SMS

SENDING AN SMS

1. Define the message format by typing AT+CMGF=1 (Text mode).

2. Set the Message centre number by typing AT+CSCA="XXX".

3. XXX is your network provider's message centre number (See Picture 1.).

4. Enter the recipient's phone number using the AT+CMGS="YYY" command (See Picture

1.).

4. Write the message and press Ctrl-Z.

Picture 1. Sending an SMS

2/6

RECEIVING AN SMS

1. Define the message format by typing AT+CMGF=1 (See Picture 1.).

2. Type AT+CNMI=1,2,0,0,0 in order to see all the received messages (See Picture 2.).

Picture 2. Receiving an SMS.

3/6

4. HIGHSPEED AT-COMMANDS

On the table below it is described AT-commands for Modem, ISDN v.110 and ISDN v.120

connections with different channel coding (speed of each slot) and timeslots (number of

receiving/transmitting slots). For example 3+1, 28800, 9600 means that the maximum speed

that you can receive data is 3x9600=28800 and maximum speed for sending data is

1x9600=9600, the maximum connection speed that is shown in the task tray is the same as

the maximum sending speed (28800).

Modem

at+cbst=7,0,1;+chsn=1,1,0,4