Categories: Symbian C++ | S60 | Code Examples | Telephony

This page was last modified 07:01, 9 January 2008.

From Forum Nokia Wiki

Purpose:

The following link is used to Dial a string in 3rd edition.

Dial A String

The classes CPhCltDialer and TPhCltExtPhoneDialData are used to accomplish the string dialing.

But the same doesnt work in 3rd edition Feature Pack 1.

The workaround to this problem is to send USSD commands using AT commands.

We use the RCommServ and RComm classes and send the commands.

Header Files:

C32COMM.H

Libraries:

c32.lib

Capabilities:

CommDD ReadDeviceData WriteDeviceData NetworkControl SwEvent NetworkServices LocalServices

ReadUserData WriteUserData UserEnvironment

code Examples

Initializing code

_LIT(KCsyName,"DATAPORT");
_LIT(KDataPort,"DATAPORT::1");// this works with CUSD
//Start the service to the RCommServ
User::LeaveIfError(StartC32());
RCommServ iCommServer;
// Connect the server
User::LeaveIfError(iCommServer.Connect());
// Load the CSY module
User::LeaveIfError(iCommServer.LoadCommModule(KCsyName()));
RComm iComm;
// Open the port
User::LeaveIfError(iComm.Open (iCommServer, KDataPort, ECommShared));

Issue Request Code

Sending Ordinary Message

_LIT(KTestCommandEnd,"\r\n");
//iSendString has the data which is entered through a Dialog Box
//It should be appended with KTestCommandEnd
iSendString.Append(KTestCommandEnd);
iReplyData.Copy(iSendString);
//We write this information to the serial port
iComm.Write(iStatus,iReplyData);
SetActive();

Handling code after the Request is done

_//Reset the Buffer to read more information
iReplyData.Zero();
//Issue Request for more Information
iComm.ReadOneOrMore(iStatus, iReplyData);
SetActive();

Releasing code

iComm.Close();
iCommServer.Close();

The following is the document which describes how to pass AT commands for Call Waiting and Forwarding:
AT-Commands

Example Project

Sending USSD via_AT_Commands