Problems with call hang up

Hello everyone,

I'm developing an application for a Series 60 devices (I use Nokia 6600 for test) that communicates using the data calls.

When I answer the phone call using the AnswerIncomingCall(...) function I can hang up that call using the HangUp(...) function.

But, when I want to make a call I can't use Dial(...) function (don't work on this phone) so I use AT commands. When I try to terminate that call with HangUp() function, I get the KErrNotReady error code. I think that is because HangUp() function terminates an active call established with the Dial(), Connect() or AnswerIncomingCall() functions.
Then I tried to switch to command mode (+++) and to send ATH command to modem but that didn’t worked also.

Here is the code I tried:
[code]
_LIT8(atcommand, "+++");
comm.Write(iStatus, atcommand);
User::WaitForRequest(iStatus);

_LIT8(hangup8, "ATH\r\n");
comm.Write(iStatus, hangup8);
User::WaitForRequest(iStatus);
[/code]

I even tried to wait for 3 seconds after sending the "+++" command (to be sure that the modem is in command mode).

Am I doing something wrong or is there anything else I should do?

Thanks in advance,
Sasa

I have found some undocumented stuff that can be a solution to my problem.
Here is the code:

[code]
RGsmCallGroup callGroup;
callGroup.Open(gsmphone, RGsmCallGroup::ECallGroupMain);
callGroup.HangUp();
[/code]

I had to copy gsmadv.lib and etelagsm.h files from some older SDK’s and my application compiles without any error.
When I try to start the application, nothing happens.

Does anyone know if this functionality is still supported in Nokia 6600?

Thanks in advance,
Sasa

Because I can't hang-up using the "+++" and "ATH" commands from my source code, I tried next:

I connected one Nokia 7210 phone to PC (over the IrDA) and Nokia 6600 to other PC (over the Bluetooth).
I started HyperTerminal on both devices and started new data call (ATDT…).
I answered the call on the other side (ATA) and have sent some data.

When I sent “+++” and after that “ATH” command from Nokia 7210, the call was regularly closed. I tried the same think on the other side (sending commands from the other PC’s HyperTerminal to Nokia 6600) but the call wasn’t finished.
When I send “+++” (to bring modem to command mode again) and after that “ATH” I get the “ATH” command on the other side (this happens only when I try this with Nokia 6600).
So, my conclusion is that I can’t bring Nokia 6600’s modem to command mode.

Is this a known bug or am I doing something wrong?

I would appreciate any kind of help!

Thanks in advance,
Sasa

I tried a few more situations and succeeded in hanging-up the call that was established with AT commands.
I accidentally figured that I should wait between 5 and 10 seconds after I send the “+++” command to modem and before the modem goes to command mode.
Now I can hang-up the call if I send the “+++” command, wait for about 10 seconds and than send the “ATH” command.

The problem I have now is that I would like to know when the phone is in command mode and not to wait all 10 seconds.
There is a function “GetStatus” in RPhone class that should return the TStatus instance (contains all the data I need).
So, the idea I have is to send the “+++” command and to start the timer that will check the phone status every second until the iMode becomes “EModeOnlineCommand”.
I tried the GetStatus function and it works fine when I answer an incoming call using the ETel API but it always returns “EModeIdle” when the phone call was started sending the ATDT… command.

Is there any other way I can check the modem state (whether it is online or “online command”)?

I reed that it’s not possible to get the answer from the modem after sending an AT command. Is there any way I can get some answer from modem when I work with AT commands?

I would appreciate any help!