Hello everybody!
I know this looks like it belongs in the networking forum, but I'd like an answer specific to the Jamin.
The problem is this:
If I am downloading a page with IE it blocks incoming calls. If the GPRS connection is active but no data is transferring calls go through.
I found an old thread on this and it seems to be a phone specific problem (some models do this and others don't).
So am I missing something?
Is this a ROM / hardware thing, or is there a setting some ware, or maybe this is dependent on the cellular provider?
Does anyone else here experience this? Please let me know and if my question is stupid don't hesitate to point it out.
P.S. I am using latest official i-mate ROM 2.13.9.23 WWE and 1_02.20.21 radio.
Sounds quite strange, if I remember well and from experience in low-coverage areas the GPRS signal is dropped first if calls are made on the handset and there is not enough bandwith for both. But I am sure we find a GSM network expert here that can enlighten us. Interesting question.
Hi,
I have aone xda Atom.
Have the same problem.
For example media player streaming internet radio , phone calls don´t came through. Or 1 in 10 came through.
If I´m connect without streaming or downloading then the call came through
Regards
Josef
As far as i remember you can't recieve any calls exactly when downloading. When GPRS is simply on it's ok. Don't really remember why...
As far as i remember you can't recieve any calls exactly when downloading. When GPRS is simply on it's ok. Don't really remember why...
The phone and GPRS are mutually exclusive.
We have a GPRS application that needs the connection to be alive as much as possible to receive incoming data. Phone calls get in the way of this, which is why I know the problem exists.
I do not have a validated reason for the problem (I believe they use the same transmission streams over the network, which means the network needs to know whether it is transmitting data or voice. Data needs to be reliable, with no dropped packets, while voice needs to be quick, with dropped packets being ignored, or something similar anyway).
Graham.
Hi,
Will like to add. Have one Universal too.
With the Universal if I ´m downloading or listen internet radio, when a call cames the downloading is suspend. Allways.
Regards
JoseF
Seems like it depends on service provider not on the device... I remembere the time when GPRS have just been started on NW Megafone - GPRS traffic lived like poor homie with the voice transmissions so when many peoples speaks - gprs is dead. Nowdays we got edge and gprs works fine. But still we got subj
Well, at least now I know it's not a matter of settings or ROM version.
Still not sure if it's the phone or the provider, but since I don't fell like switching either of them (specially the phone ) I guess I'll have to live with it.
Just to clarify: I don't expect simultaneous voice and data, but it would have been nice if incoming calls killed GPRS to get through even if I am in the middle of a download.
P.S.
Thanks every one for your prompt responses!
Not much help, but this is among the reasons I use a multicard - maybe you want to consider it. A multicard is two SIM cards with the same number, but one card is activated for GPRS/UMTS and SMS, and the other one for voice traffic and SMS. Especially with a flat data rate, GPRS is always on, and one does not have to use the Prophet as a phone all day. It means you have to carry two phones, but for a heavy user working with these tools all day it makes perfect sense. Just my five cents...
Just to clarify: I don't expect simultaneous voice and data, but it would have been nice if incoming calls killed GPRS to get through even if I am in the middle of a download.
Click to expand...
Click to collapse
Hm... Let me think... I remember there was such a nice setting on my Panasonic GD87, called "Wait for incoming call" or smt like this. Nice feature. Gives the ability of cellular phone disconnect from gprs and recive incoming call. Seems like I'll be missing it
Are there any news on this?
I have the same problem, that incoming calls are blocked when using GPRS.
Hi yoda_143.
I recently got to do some testing at work with phones from different manufacturers (MIO, HP, ASUS) and my SIM.
The conclusion: It is not the Jamin!
On all phones incoming call was blocked while data was transferred.
I haven't had the chance to test it with different providers, but I suspect this will not make a difference.
It would be nice though if there was a way to give voice calls priority even if it meant starting the download over from the beginning after the call ends.
Guys this might help
http://www.gsmworld.com/technology/gprs/class.shtml
Class A, Class B & Class C?
The class indicates the mobile phone capabilities.
Class A
Class A mobile phones can be connected to both GPRS and GSM services simultaneously.
Class B
Class B mobile phones can be attached to both GPRS and GSM services, using one service at a time. Class B enables making or receiving a voice call, or sending/receiving an SMS during a GPRS connection. During voice calls or SMS, GPRS services are suspended and then resumed automatically after the call or SMS session has ended.
Class C
Class C mobile phones are attached to either GPRS or GSM voice service. You need to switch manually between services.
BUT; even my Wizard claims that it's Class B, does the same thing and blocks incoming calls while downloading. So what does it mean?? Maybe a network provider issue :?:
From my use of XDA2i it appeared that phone can transfer GPRS data or phone call not both at the same time.
If you want both then you will need 3G/UMST
The Universal will happily allow phone calls whilst surfing over a 3G connection. Even on Universal you lose the ability for data&phone if you are using GPRS.
I see but it says everywhere that Class B phones has to stop data transfer and accept incoming calls. My old Sonyericsson T630 was doing the job! BTW my network provider claims in their website FAQ like this..
Q- During download with GPRS, if an incoming call occurs, do my GPRS connection stops?
A- During download with GPRS, if an incoming call occurs, you can easily accept the call. During call, your data transfer suspends and after call ends, goes on where it was suspended.
EDIT: I talked with network operator today and they changed their web site saying after a few tests that "u can't suspend and resume GPRS data flow, while data flow incoming calls are blocked!!"
While Wizard is Class B and the operator uses NOMII , all architectural must be wrong.
Really WEIRD, isn't it?
This article is also interesting (don't look "symbian" thing, it is a general article about GPRS/NOM)
http://www.symbian.com/symbianos/standards/symbianongprs.html
Network operation mode and phone classes
The Network Operation Mode, or NOM, is responsible for the capabilities of a GPRS network, while the class indicates the mobile phone capabilities. On NOM 1 networks, mobile phones with the right capabilities can have simultaneous circuit- and packet-switched connections. On NOM 2 networks, mobile phones can remain attached to the GPRS networks when in a voice call but they can't transmit data at the same time. On NOM 3 networks, mobile phones can either establish a packet-switched data connection or a circuit-switched voice one but they need to disconnect from one to establish another.
Class A phones can make full use of NOM 1 networks: they can use circuit-switched voice and GPRS data services at the same time. Class B phones can register circuit-switched voice and packet-switched data services at the same time but may only use one at a time. Should the user receive a call while on the internet, they can take the call and GPRS service will be suspended, resuming once the voice call is ended. Resuming GPRS service is much faster than re-establishing a data call. Class C phones can only register for packet-switched data or for circuit-switched voice services; if the user chooses GPRS, then they will be totally unavailable for GSM calls and reciprocally.
End-users will initially have access to Class B mobile phones, which are able to make and receive calls while simultaneously being registered with GPRS services - GPRS services will automatically be suspended and resumed at the end of the call. Class B phones only support one active service at a time - GSM (voice, fax or data) or GPRS (data) - though both services can be registered with the network and the phone can switch automatically back and forth. However, should the user roam to a network area that is NOM III, their Class B phone will effectively be working as a Class C phone.
New applications designed to run in an online environment will be developed to take advantage of GPRS and 3G networks. The user may well experience a 'blurring' of applications whereby they won't need to switch task nearly at all.
my universal (t-mobile) on 3g in australia is quite fine i tested the situation you guys are talking about and itl mmove he program to background and take the call (both do run simultaniously (internet might slow down alittle by about 3 Kb/s so hope this helps someone... byebye (GREAAT WEBSITE!)
Hey all,
is there anyway of stopping wm6 from connecting to gprs other than deleting the connection?
while i'm under 3g umts coverage, i would like it to be connected as the data is free... but when out of coverage or when my hermes decides its only going to join the roaming network (where i only get gprs), i get charged data.
any ideas guys? couldn't find much in the search. must be searching for the wrong thing or there doesn't seem to be a definate answer. ie, will allow umts, but not gprs etc. most seem to disable data all together.
anyone with Three in australia will know that Telstra charge a lot for using roaming when not in 3g coverage. there must be someone out there with the same dilemma?
Cheers,
Bill
can you just force 3g band only in phone setting?
possibly. at the moment everything is set to auto. so it defaults back to gsm (telstra network) when umts is unavailable. i just dunno what setting to pick for Three's umts. even then there is only one option for UMTS only. umts(2100+850) otherwise they are paired with gsm.
Any thoughts?
this app automatically do this job: http://forum.xda-developers.com/showthread.php?t=503131
Hey guys!
I tried searching the forums on an answer to the question I'm having, but no luck. So.. without further adue, my first topic..
Is there a way to disable GPRS, and have only UMTS (and 3G, HSDPA) connections?
The reason I'm asking this, is that whenever I move into an area without UMTS coverage, it automaticly switches to GPRS. When this happens during a phone call, the call gets dropped! Also, while having a GPRS connection, noone is able to call me, without me noticing.
What I'd like to happen is that when there's no UMTS coverage, there will not be a data connection, at all, not even GPRS. (of course, GSM will be available at all times).
I've tried the utilities Bandswitch and CommMgr Pro (www.commmgrpro.com), but both do not seem to offer this feature.
Any idea's?
I'm trying to figure out a way to have the data connection to work during a call. Whenever i press answer i loose all connection that are bind to operator data connection and if i have the active sync or bluetooth it's ok.
Is it possible to keep data connection while talking or is #777 using the same tunnel as voice and therefore cannot overlap?
http://forum.xda-developers.com/showthread.php?t=546982&highlight=operator
talk to your phone company
Telus is a CDMA provider, so when you make or receive a phone call or text message, it has to temporarily disable the data connection to do so. GSM providers don't have to do this, it's an unfortunate limitation to CDMA technology.
There's light on the horizon, though! When Telus deploys their HSPA network next year, you should be able to upgrade your phone to one that supports HSPA bands (such as the Touch Pro2) and use data during a call.
Hello,
the HTC support tells me, that you can´t surf (with and without tethering) and make a phone call at the same time.
Is there a hack or patch to do this at the same time?
P.s. Somewhere i saw, that iPhone can do this with a hack.
You can do it if you're on 3G or WiFi.
If you're on GSM you can't do it.
That sounds great!
But when im on gsm in internet, does i still get incoming calls?
That is very importent for my business...
No, only on 3G. GSM supports only call or data, not both at the same time. If data is connected but not actively transferring stuff, incoming calls will go through, but if you're downloading at that moment the call will just sound busy/go to voicemail. That's a network limitation.
kilrah said:
No, only on 3G. GSM supports only call or data, not both at the same time. If data is connected but not actively transferring stuff, incoming calls will go through, but if you're downloading at that moment the call will just sound busy/go to voicemail. That's a network limitation.
Click to expand...
Click to collapse
Actually it is not a network limitation.
There are Class A devices out there that can handle simoultaineous voice and data sessions.
GSM is not a network connection like GPRS and other. GSM is like old 56k modem which dials up a number and holds the line. Therefore, you cannot connect to GSM and make a call. This is a network limitation, not related to phone (unless you have 2 sims).
GPRS, EDGE are extensions of GSM... and today's general use of "GSM" includes those... GSM = not 3G