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wierdo is offline wierdo
2009-12-11 , 20:09
Posts: 118 | Thanked: 26 times | Joined on Jun 2008
#11
Originally Posted by tso View Post
sounds to me like such a setup would take up the equivalent of two calls in the cell one is connected to at the moment, not surprising if not many operators make said feature available, if it exists (first i have heard of it).
Well, it actually takes up far more than one call, as do most EDGE data transfers. It's not unusual for a carrier to limit any particular device to 4 download timeslots and 1 upload, even when they are capable of more.

So really, when compared to a normal transfer, the extra timeslot taken up by the voice call isn't much.

Personally, I'd be happy with 3+1 and voice. (that would limit you to about 170Kbps downstream in ideal conditions, or 100 more realistically)

The feature is called dual transfer mode, btw.

Edited to add: And having just looked it up, N900 supports it.
 
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tso is offline tso
2009-12-11 , 20:12
Posts: 4,783 | Thanked: 1,253 times | Joined on Aug 2007 @ norway
#12
well thats interesting, makes one wonder why they went with UMTS in the first place
(except for maybe the lower latency that is)
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nashith is offline nashith
2009-12-11 , 20:13
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#13
The N900 is a Class A, Multislot Class 32 device. So it can support simultaneous voice and data. I think the problem with you is the operator. We have two operators, one supports simultaneous voice and data, other doesn't. So the problem is not EDGE or N900, it's most likely the operator.
 
rewt is offline rewt
2009-12-11 , 20:55
Posts: 150 | Thanked: 93 times | Joined on Oct 2009 @ Pennsylvania, US
#14
According to the specs provided by Nokia, the N900 is a class A EDGE/GPRS device. Forum Nokia lists that it also supports DTM Class 11. I suspect it is not truly class A, as that would require two GSM radios, but rather only class A DTM. If that is the case, the operator's equipment must support DTM to maintain a data session concurrent with voice.
 
Botev1912 is offline Botev1912
2009-12-11 , 21:01
Posts: 51 | Thanked: 4 times | Joined on Dec 2009 @ Seattle
#15
it's normal. When i used n95 the same thing happened
 
johanjpk is offline johanjpk
2009-12-22 , 12:35
Posts: 5 | Thanked: 0 times | Joined on Dec 2009
#16
Hi,

I experience that the N900 is not reachable because of an active GPRS connection. I prefer having phonecalls over data, how does this work? And can I change this preference?

Best regards,

Johan
 
NuMetal is offline NuMetal
2009-12-22 , 12:50
Posts: 22 | Thanked: 1 time | Joined on Dec 2009 @ Dortmund, Germany
#17
I've no problems receiving calls with an active GRPS Connection.
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floffe is offline floffe
2009-12-22 , 12:55
Posts: 287 | Thanked: 127 times | Joined on Oct 2009 @ Sweden
#18
I'm not sure that is fixable on 2G (including EDGE)
 
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pycage is offline pycage
2009-12-22 , 13:12
Posts: 3,404 | Thanked: 4,474 times | Joined on Oct 2005 @ Germany
#19
AFAIK dropping GPRS connections automatically for incoming calls on 2G (3G can handle both simultaneously) is the carrier's responsibility.

My N900 always drops GPRS/EDGE connections when a call comes in (T-Mobile D), so this can't be related to the phone software.
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tso is offline tso
2009-12-22 , 13:13
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#20
http://talk.maemo.org/showthread.php?t=36774
 

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