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GPRS and Phone calls

I upgraded to 2.24 Tmobile official beta ROM. and it seems that I cant get phone calls while im streaming thru EDGE/GPRS not just streaming also like browsing and stuff, phone calls go straight to voicemail, is this how it was on 2.17 or 2.21 ? Because I tought it worked before !!!! Can anyone confirm please...

Can some one please verify regarding this, can some one just try browsing somethign and call them selvs and see if it goes straight tru to voice mail on a diffrent ROM please....

Yozh:
I had an 8125 on the Cingular network running Summiter's 2.17 ROM, and the phone call always interrupted any web surfing I was doing, and/or disconnected IM+ (which uses gprs/edge).
That phone broke (d'oh!) and I got another one that was running the stock ROM. Same thing.
I now have a new 8125, and just upgraded to Summiter's 2.3 ROM (thank you Summiter!), and the phone acts the same.
I've never experienced an issue where the phone call goes directly to voice mail... that I know of.

Very strange, I tought thats what mine used to do before the 2.24 ROM it used to interupt the GPRS session for a phone call. ANyone else that can confirm that this is just an issue in 2.24 ROM ?

Anyone else that can confirm this ?

Or maybe there is a registry setting for this ?

I have always thought it depends on what your gprs connection was doing.
if it is connected but idle, then calls will come through. if it is connected and in use, downloading a file or something, then it won't be interupted by a call.
as far as I know, this is the way gprs was desgined to work. can anyone confirm?

I dont want to go back to the 2.17 ROM just to test this. But it looks like no one out there would do it for me .... I could of sworn that it worked before..

yozh;
I have the same ROM and I DO get my calls, they DONT go to voicemail.
It's not the rom. Its the way GPRS works. Try to download constant packets of data(like streaming a high quality video) ON ANY ROM and try calling you at the same time. it can and it WILL go to voice mail.
That being said, sometimes you might be downloading a lot of data and you phone MIGHT STILL RING! This is because GPRS uses multiple different channels than then one used for voice, but this feature is just a plus, its not something you can always rely on.
Just something i wanted to add: This rom had brought me incredible reliabily on my GPRS connection and, paired with the cingular radio rom, its close to perfect for me. Maybe because with this rom the GPRS is always working full-speed and optimized, pushing the MOST of data it can, calls might be going to voicemail more often than normal? Its just a thought and maybe its a stupid one, but on my understanding the more data its pushing, the greater the chances it will go to voicemail.
Hope that helps.

Strange because MDA is class B device and class b device should
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.
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thats from http://www.gsmworld.com/technology/gprs/class.shtml
So thats kinda strange Im telling you Tmobile is doing something, I need someone with 2.17 or 2.21 to check this please[/quote]

Similar problem with 2.25
I just updated to 2.25 ROM and have a similar problem. In this case, it seems that once I make ANY GPRS connection, the voice channel no longer works. Outgoing call just don't connect and incoming are directed to voicemail. It still indicates a strong signal to the Cingular netowrk, and data apps still work (for example, the voicemail notifications and email keep coming in). I have to stop the data comm and then cycle the phone (voice) connection in order to get voice back.
Any suggestions? Cingular is advising me to downgrade back to 1.8 ROM - but they don't even have a link to get it!

What programs are you using?
See this thread: http://forum.xda-developers.com/viewtopic.php?t=53432
It documents the problem...

Problem: Calls are at random forwarded to voicemail!!

Hi Guys,
Since a week or so calls are at random directly forwarded to my voicemail.
I have checked my "call forwarding" settings and they are normal:
Forwarding is enabled if I don`t answer after 25 sec, when I`m unavailable and when I`m busy. After a couple of hours I recieve a sms that I have messages waiting in my voicemail. This happens totally at random because a couple of hours later the same people can reach me without any problems
I am assuming that my phone sometimes loses connection to the T-mobile network and so I am unavailable and the call is forwarded to my voicemail. The reason why I assume this is because don`t see a missed call on my phone. I have never had problems with dropped connections nor noticed that I connection is lost. .
Only thing that I recently changed was upgrading my rom to Molski.Biz Rom (RUU_Molski.Biz_226102_22610105_022511_WWE ) on 2 october but I only noticed the problems about a week, so I don`t know if it can be related. I also upgraded to the 2.47.11 radio ROM to see if it would help but without difference so I reverted back tot the 2.25.11 radio ROM
I called T-mobile and they told me it must be related to the phone and couldn`t be a problem with different carriers nor the T-mobile network.
Has anyone have had these problems? or knows a sollution to this?
Greetings,
Averixcool
Edit: running software: Agenda Fusion, Photo contacts and handyswitcher and I don`t have GPRS programs running.

I guess you are losing the connection. You should look for some sort of a pattern? What seems to be random may not be random at all.
Also... You still get SMS for voicemail notification? That's some deja vu...

What software do you have installed that might go out to the internet from time to time? Do you have an email account setup where it will check every 15 minutes?

ipaqkiller said:
What software do you have installed that might go out to the internet from time to time? Do you have an email account setup where it will check every 15 minutes?
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Click to collapse
I don`t have any software that is using the internet on my phone! So that can`t be the problem.
I haven't noticed any pattern in the forwarding or losing my connection. It is happening on different times of the day. It always happens in standby modus of the phone but I do recieve the SMS for voicemail notification but sometimes 3 hours later, so it could be that the connection was lost during 3 hours?

I think i have the same problem. It happens not very often (i think) but its very annoying.
I also found out that my problem is only related to inbound calls.
Cos I was able to place an outbound call with my wizard but i couldnt call it using another phone. It just switches immediatly to voicemail and indeed after a few hours the inbound connection comes back up again and the voicemail-notices start coming in.
I've had numerous calls with the T-mobile helpdesk about this and they also said it was probably phone-related.
Not looking forward to send it off and live without my baby for a cple of weeks
Oh by the way I have rom:2.26.10.2 WWE

I also noticed today that`s only inbound! Today a buddy of mine was calling me while in front of the door. So we tested it right away. He called me again and I also called with my home phone to my mobile and both times directly the voicemail.
Strange thing was that the whole time I had connection with the T-Mobile network with 4 stripes network strength, so the connection wasn`t lost but I was unreachable. At the same I could place a outbound call without any problems.
Is this still phone related?
Full strength connection with T-Mobile network and only inbound calls blocked, outbound no problemo. I don`t get it anymore!

maybe try a different radio and see if that helps the problem.

averixcool said:
......I also upgraded to the 2.47.11 radio ROM to see if it would help but without difference so I reverted back tot the 2.25.11 radio ROM.....
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Click to collapse
The threadstarter allready tried another radio, i don't know if there is newer one. I would gladly give it a try.
My wild stab in the dark would be that something goes wrong when moving to another gsm-antenna (location)
Somehow the phone is not reporting as available or something.(i have no clue about gsm technology so never mind )

Heej there,
got exactly the same thing over here since I've upgraded to Molski's Rom 2261002nld. Also updated to radio 24711 but it didnt change.
I'm now flashing it back to tmob 2210205 to see if it's ok now....
I'll keep you informed...
cu Bol

Is this just a Dutch problem? I'm thinking it is more of a network problem despite what T-mobile.NL are saying.
Does the problem occur at peak times?

I have a similar problem. I was getting Voicemail notifications without the phone even ringing. Then i ran into someone and they said they called several times and i never answered. So I called my own phone and takes my phone 4 or 5 beeps for it to ring.
I'm on shogun and faria's cingular 2.26rom i also have photo contacts on.

Problem Solved
I had the same problem (also with T-Mobile Dutch by the way) with the 2.26 rom until I downgraded my radio rom to 02.07.10. All is fine now.

I also have the same problem. Using 2.26 dutch rom

same problem
I have the same problem after installing the new Molski 2.26.10.2 AKU2.3 Rom.

I have the same problem
t-mo 2.26 WWE

Same problem here only with Jester rom Aku 2.3 and T-mobile dutch

Well, I still have the problem about every other day.
And yes. I'm in the Netherlands.
I'm considering returnung it to t-mobile because i cannot trust my phone anymore. It sucks

Hello,
As far as I know (and our Orange's contact has confirmed us this issue), active GPRS data connections make incoming voicecalls to be redirected to voicemail. This doesn't happen if your device is GPRS-attached to the network but not trasmitting/receiving any data at the moment the call is produced.
This effect has become more noticeable since new devices implement DirectPush, so they are permanently updating info from the exchange server.
I'm sorry, the only solution I know for this is to use a 3G/UMTS device, which enables true simultaneous voice and data connections.
Regards,
CATuser
Barcelona

Got the same problem. It seems only to occur on the T-mobile Dutch network. I'm running Molski's rom and tried both 2.25.11 and 2.47.11. I don't think it's a gprs issue, because there was no gprs connection when it happened. Also no active programs that use gprs.
Didn't have the problem at all with the latest dutch T-mobile rom.
I just flashed my radio rom back to 2.19.11 from the original rom. I hope it will solve the issue.

Rectification
Hello. I asked again my Orange's contact person and it seems that what I said wasn't very precise in the sense that voicecall redirections occur only under specific circumstances like channel congestion on the network's cell. Normally voice has priority over GPRS and it can 'steal' radio channels from active data sessions so the bandwidth is reduced. But it shouldn't allow to steal the last channel if it was busy. Maybe in this case an incoming call could be redirected to voicemail.
Of course, a problem with a specific rom version and its radio interface could be a problem. I'm sorry if my contribution should blurr your insight into the problem.
I will ask network engineers to learn more details about this issue.
Bye,
CATuser
Barcelona

missing calls when listening to streaming audio

Hi. I have a T-Mobile MDA running xelecien's 2.26 rom. when I stream audio with TCPMP (core player) or windows media player, all incomming calls go straight to voicemail. every so often a call will get through, but it's very rare. has anyone else experienced this issue? any workarounds? I mainly use the siruis player ver. 1.6.1.31192 with TCPMP on the memory card. whether I leave both programs running, or run TCPMP in the background with the siruis program close, I miss calls. any suggestions? Thanks, I appreciate it.

Fairly simple really - it's how the GSM network is designed to operate. You can have either a phone call or an active GPRS or EDGE connection - you can't have both, at least not at the same time.
If you are steaming music, calls will go to your vmail - likewise if you are on a call you can't use the internet.
Hope this helps.

i read somewhere that it has to do with the network also.. Tmobile has a tendecy to put data over voice.. as cingular puts voice over data

this is very true i have t-mobile and if im using like im+ and im connected to inet i wont get all my sms and calls. its fairly irritating. kinda makes me not wanna have internet on my phone.

^I tested that yesterday with IM+, I repeatedly sent messages and tried calling myself with another phone, call went straight to voicemail, then I tried it again when I wasn't sending an IM and the call came through, so you're phone will still ring as long as you're not sending or receiving data. Yes this is stupid and I wish t-mobile would put voice over data like cingular. T-mobile has inexpensive plans, cool phones, great customer service and the ****tiest coverage of any company out there WAY TO GO T-MO!!!

thanks for the respsonse.

GPRS Issues

Hi
Ive had my Advantage for two days now, and i have missed 16 calls, even though the phone is on and has full signal, after playing around this afternoon it appears to be if there is a data connection active (GPRS) ie active sync live search maps, remote desktop calls get rejected.
Ive had an JasJar for the past year and never seemed to get the issue with that, and im using the same SIM / Network / Number i was before.
Does anyone have any ideas how to get the phone to pause the data connection so the phone can ring?
Does anyone else have the same issue?
Regards
Ben

myrapid said:
Hi
Ive had my Advantage for two days now, and i have missed 16 calls, even though the phone is on and has full signal, after playing around this afternoon it appears to be if there is a data connection active (GPRS) ie active sync live search maps, remote desktop calls get rejected.
Ive had an JasJar for the past year and never seemed to get the issue with that, and im using the same SIM / Network / Number i was before.
Does anyone have any ideas how to get the phone to pause the data connection so the phone can ring?
Does anyone else have the same issue?
Regards
Ben
Click to expand...
Click to collapse
you don't happens to be using Vodafone do you? If so i know exactly what is going on.....

Nope
No, i am on tmobile UK, what i don't get is that i works fine if i swap the sim back to my JasJar.
Ben

I miss calls all the time, about 70% of my calls fail for some reason or another.
T-Mobile Suck. I never had this much trouble with O2.
I have done experiments where somebody stood next to me calls me, and gets "the number you are calling is not available" while my phone, next to them is turned on with full battery and signal...
Even outgoing calls fail randomly, just says "calling" for ages then stops for no reason.

Ive had not trouble with tmobile since i have been with them (over 18 months) until i got the advantage, ive cloned every single setting i can from my jasjar and still no look, its a shame as looks like im going to have to disable push email!

myrapid said:
Ive had not trouble with tmobile since i have been with them (over 18 months) until i got the advantage, ive cloned every single setting i can from my jasjar and still no look, its a shame as looks like im going to have to disable push email!
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that is strange, mine one now works perfectly, so when you miss your call, are you on 3.5G( HSDPA ) network or are you on GPRS?

wu5262 said:
that is strange, mine one now works perfectly, so when you miss your call, are you on 3.5G( HSDPA ) network or are you on GPRS?
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Standard GPRS, it only happens when there is a contasnt data flow if it is just connected and the connection is not being used it calls in fine.
EG if i use remote desktop / terminal services over GPRS then call the advtange at the same time it goes to answer phone, although it does take around 10 seconds before it does though but doesn't ring, like it is looking for a signal/trying to connect.

myrapid said:
Standard GPRS, it only happens when there is a contasnt data flow if it is just connected and the connection is not being used it calls in fine.
EG if i use remote desktop / terminal services over GPRS then call the advtange at the same time it goes to answer phone, although it does take around 10 seconds before it does though but doesn't ring, like it is looking for a signal/trying to connect.
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may i ask is there any reason why you are not using 3G? GPRS tend to have this problem, but 3G won't.

wu5262 said:
may i ask is there any reason why you are not using 3G? GPRS tend to have this problem, but 3G won't.
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Click to collapse
Coverage, my house and my office don't have 3G coverage, else i would be.

i was on o2 b4 n hardly ever had 3g signal n when i did my video calling never worked....since moving 2 t-mobile ive had no problem....my data connection is mon 9 till 6 b it 3.5g, 3g or gprs n i use cortado.com push email service for instant emails.....i still receive calls when connected
using the flext 50 with web n walk

I'm in the US using T-Mobile and GPRS and don't have this problem. I'll try to make it "break" and see if I experience the problem but just never noticed it.

If using GPRS and a call comes at the exact time you are receiving data, your call will go to voice mail or unanswered. Its the way the radio is designed...SOme carriers have been successful at ending the data stream and raising the priority of the voice. But GPRS modem in most phones only allows data or voice not both...but,
If using 3g/utms it should ring on the phone. And allow data and voice at the same time.
Maybe you universal is grabbing the 3g signal and for some reason the 7500 is using gprs.
Wu has also reported this problem with Vodaphone and Hsdpa...

eagle 1 said:
If using GPRS and a call comes at the exact time you are receiving data, your call will go to voice mail or unanswered. Its the way the radio is designed...SOme carriers have been successful at ending the data stream and raising the priority of the voice. But GPRS modem in most phones only allows data or voice not both...but,
If using 3g/utms it should ring on the phone. And allow data and voice at the same time.
Maybe you universal is grabbing the 3g signal and for some reason the 7500 is using gprs.
Wu has also reported this problem with Vodaphone and Hsdpa...
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Click to collapse
that is very correct, i have just change to T-Mobile yesterday, now my HSDPA works perfectly with voice, when voices comes in, it will switch the network to 3G and allow voices to comes in, data is still connected, just lower the bandwidth. Too bad that this doesn't work on Vodafone

Has anyone found a solution for this?
Regards,
Hollinshead

hollinshead said:
Has anyone found a solution for this?
Regards,
Hollinshead
Click to expand...
Click to collapse
there is no solution, the only thing you can do is swap your operator, or just don't use 3g at all....

receiving calls while online (edge) with wing?

Hi,
I have a t-mob wing (after I drove over my magician and I have the following problem: When I am having an active data connection I cannot receive any voice calls. The calls are going directly to voice mail, without notifying me. Once I stop the data connection I can receive calls again and than I will see that I missed a call.
I talked to t-mob support, and after doing a hard-reset (of course) they told me that this is a known problem with the wing, that they are trying to fix it and that there is nothing they can do right now.
1. do other wing users in the US experience the same, so is it the default behavior, or am I just unlucky? (it worked great without a problem with my magician btw)
2. as sometimes during the day the internet connection automatically gets connected (activesync I guess) I never really now if I am able to receive calls right now. Is there a workaround to manually start up and stop the internet connection without the device automatically connecting whenever it feels like it?
thanks in advance
wolferl

interesting ...
I have had a lot of complaints from people telling me that when they call me, it goes straight to voicemail.

I'm also a US Wing user, and I can confirm that is happening to me as well. Was checking sports scores on my break at work earlier, and my girlfriend called me, and I got a voice message from her...but it never showed that she called.
I also have the issue with people in my fave 5 not showing in the call history anyway, so I guess I lose both ways.

hm,
ok, seems to be a generic problem. Is here anyone who successfully gets voice calls while on a data connection with a wing/herald/p4350?
would be interesting to see if it is a t-mobile or device problem.
thanks

I got a HTC wing and i still get incoming call while browsing the internet. No problem here. i've tested a couple times and they all went through. I have T mobile

hondaman82 said:
I got a HTC wing and i still get incoming call while browsing the internet. No problem here. i've tested a couple times and they all went through.
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Click to collapse
hi hondaman,
thanks for the info. whats your provider?
thanks wolferl

"active" data connection is the key
I have the same problem, no voice calls with an active data connection. For me, it seems to be only when the data is actively transferring, like streaming audio or a largish download. Straightforward web surfing doesn't seem to cause the problem, I've received multiple calls while surfing. But during streaming audio, calls go to voice mail every time.

I swear to you, I get calls when I am using data all the time on my Wing. I have the stock T-Mo rom and everything. No CID unlocking, no SIM unlocking.

It happens to me alot that people complain they have called me and it goes straight to voicemail... and its been in cases where im not even using my phone, and as far as I know, I have good signal.
I was running this GB soft program that kept my data connections always on... so I stopped using that to see if I notice a difference.

On the T-Mobile MDA it worked just fine, but on my Wing I can't receive calls while online either.

I just did some testing and I need to correct my original statement. Looks like kerrkj and the others were right. Just being online does not stop you from receiving calls. Just when you are transferring data, the line being actively used, you are not reachable. So, when you are web browsing, it depends whether the moment the call comes in, data is transmitted or not. I was testing accessing different web pages and a couple of times it worked and a couple of times it did not. When streaming audio the calls went to VM 100% of the time.
So, when I am using tomtom and having the traffic check activated, it will be pure coincidence whether you receive a call or not. When streaming audio it will be guaranteed that you are not receiving calls.
I am pretty sure that it was not like that with my magician. Hopefully t-mobile sorts it out sooner than later.
thanks for all your feedback
wolferl

it happens to me too, i know on sprint with the treo's you can run internet or phone, all calls will go to voicemail if you are on the internet. i just assumed it was that way with all of them.