[maemo-users] Cannot turn off call forwarding

From: Tanuva tanuva at googlemail.com
Date: Sat Jun 12 15:22:03 EEST 2010
Am Samstag, den 12.06.2010, 12:02 +0100 schrieb Graham Cobb:
> On Saturday 12 June 2010 11:24:06 Tanuva wrote:
> > Okay, had a look into my provider's documents and found a way to turn it
> > off. It's done using some GSM codes like ##61#, which the N900 doesn't
> > support, therefore I used my old 3510i and it seemed to work.
> > Back in the N900, call forwarding is enabled again. Is that setting
> > phone based?
> No, in GSM the phone has nothing to do with call forwarding -- the network is 
> in control.  All the phone can do is show you the network setting, and 
> request the network to change the setting (which the network can choose to 
> ignore).
> When you look in the Settings on the N900 it is showing you the current 
> network setting.  When you disable forwarding on the N900 it sends the same 
> GSM codes that you entered on your old phone.  Next time you look at the 
> settings the phone asks the network what the current settings are and tells 
> you.  The phone does not remember the settings (and is not involved in the 
> act of actually forwarding a call).
> As an earlier reply said, if the N900 is not succeeding in changing the 
> settings it means your network operator is refusing to accept the changes.  
> You need to call your operator and speak to someone to get them to change the 
> settings.  It is not a bug in the N900.

Thanks for the insight!
So changing the forwarding setting is only supposed to work via the
settings app?
Why can't I enter the GSM command in the phone app manually and see the
network reply myself instead of having to reopen the phone settings and 
see that my will is being ignored? ;)

I did some testing now:
0: Turned off forwarding using the 3510i, no testing here

1: Back into N900, is not available when I call it from landline (the
sound that you hear when the person you are calling already talks to

2: Switched the SIM into the 3510i. Calling works, mobile box is turned

3: Back into N900. Rings correctly now, forwarding is turned off. - BUT
the phone settings app still claims that forwarding is enabled. I didn't
press save but discarded the dialog, forwarding is still off.

3.1: Reopened phone settings, shows forwarding as enabled. Pressed save
without changing anything, it's still off.

3.2: Reopened phone settings, explicitly disabled forwarding. Now it
behaved like in the 1st try, on the second call it rings and forwarding
is still off.

It seems like phone settings is doing something strange there.


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