AT command problem

[dantifer]

I use RCommServ to send AT command to mobile modem. When I send ATDxxx; it works and the number is dialed out.
But when I send AT+CCFC=1,1,number to send call forwarding , it doesn't work.What may be the problem?who can tell me ?

I use the following code:
RCommServ commServer;
RComm comm;
TRequestStatus status;

commServer.Connect();

_LIT(KCsyName, "dataport");
User::LeaveIfError(commServer.LoadCommModule(KCsyName) );


TBufC<12> port(_L("DATAPORT::0"));
TInt ret = comm.Open(commServer, port, ECommShared);

// More code: to wait 2 seconds : no need now
// User::After( KIWaiting );

//////////////////////////////////
// send AT command
//////////////////////////////////

TBuf<48> command1;
// this command set call divert
command1.Format(_L("AT+CCFC=%d,%d,%s\r\n"),reason,mode,aPhoneNumber);

// below is a test command , call number directly
// used to test AT command works.
// command1.Format(_L("ATD%s;\r\n"),aPhoneNumber);

TBuf8<48> command;
command.Copy(command1);
comm.Write(status,command);
User::WaitForRequest(status);

[suterma]

Hi dantifer,

call forwarding may not be supported by your operator (or at least not by using AT-Commands). Try using different operator.

Do other AT Commands work, like modem configuration commands?

br, Marcel