[GSM call conflicts] Incomig call SIP call rings over cell call in progress

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While talking on a cell Call I received a call to my office phone system of 
which my EVO is now an extension. The incoming SIP call rang at full power in 
my ear and knocked off the other call.

My phone is: htc EVO 4G
firmware 2.1
kernel version 2.6.29-789bf291
software 1.47.651.1

Not sure what csipsimple version I have. (installed 6-30-2010)

Great App
Thanks
Rob

Original issue reported on code.google.com by rrobson007@gmail.com on 2 Jul 2010 at 3:31

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Sorry for your ear.

You're right, I don't handle other ongoing calls. Have to be implemented.

Don't know yet what is technically possible to solve this issue.
The best thing is probably to change the ringing mode.
Another solution could be to prevent gsm incoming calls while in a sip call.
Or maybe let user choose in prefs what he want to do.
I have to implement hold call feature also.

Original comment by r3gis...@gmail.com on 10 Jul 2010 at 4:36

• Changed state: Accepted

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I am using a Nexus One with CSip Simple (Version 0.00-12). 

I the cell phone is in use and the SIP phone is ringing, I am able to reject 
the call or to accept it. 

However, when I am using the SIP phone and a regular cell phone is coming in, 
there is no option to accept or reject the call or stop the other phone from 
ringing. I will be very interested in having such an option. (maybe it should 
be implemented in the android OS and not by each SIP application). 

Original comment by mflo...@gmail.com on 23 Jul 2010 at 6:15

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Incoming SIP call also rings, and is answerable, when an outgoing call is 
active (at least, when it is "ringing"). Happened to me today. I was able to 
talk via incoming call, but I continued to hear long beeps of the outgoing 
call. I pulled down the status display and there where both calls there. I 
selected the outgoing one and terminated it. After that, I was able to continue 
talking normally.

I think the app should listen for call status broadcasts, and reject incoming 
calls when the mobile phone is on call, and also when a SIP call is in progress.

Another interesting effect: after I terminated the outgoing call and talked for 
a while, the screen got dark as if the device went to sleep, but there was no 
sound degradation! Weird.

Original comment by egcros...@gmail.com on 28 Jul 2010 at 7:57

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Issue 167 has been merged into this issue.

Original comment by r3gis...@gmail.com on 29 Aug 2010 at 11:14

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Original comment by r3gis...@gmail.com on 29 Aug 2010 at 11:15

• Changed title: [GSM call conflicts] Incomig call SIP call rings over cell call in progress

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Original comment by r3gis...@gmail.com on 3 Oct 2010 at 10:53

• Added labels: Priority-High
• Removed labels: Priority-Medium

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Should be ok with latest dev version 0.00-15-01 (remember to remove market one 
before installing the dev version).

Original comment by r3gis...@gmail.com on 18 Oct 2010 at 11:14

• Changed state: Fixed

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I made this experiment (with -15-01): I established a mobile call, and 
initiated a SIP call to the handset. There was no ringtone or vibration, but 
there was visual indication of incoming call in the status bar, and I was able 
to answer the SIP call without hanging up the mobile call.

I am not sure if it is the indended behavior. Anyway I think it is reasonable, 
as it allows you to put the mobile call on hold and answer the SIP call if you 
choose, or reject the SIP call. Maybe having vibration and/or quiet audio 
signal would be better.

Original comment by egcros...@gmail.com on 18 Oct 2010 at 12:33

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Yes it's what is expected. 
In this way (GSM already established and then sip call), I think that the only 
thing we could imagine is some vibration... but not sure that users will be 
pleased with that (could be discussed or could be an option.?). 

The best thing would have been a little bip or tone but that's only possible 
while in SIP and gsm is incoming (not yet done, but I can do that). 
When it's GSM that is in call, it take a kind of lock on the audio hardware. So 
it's worth to left GSM keep control on audio.

Maybe for consistency a good solution could be an option that enable some short 
vibration (one or two short vibration) if there is an incoming GSM while in SIP 
call or SIP while in GSM call. This solution is technically possible for both 
cases and it could be acceptable for users if that's only 1 or 2 short 
vibrations.
What do you think?

Original comment by r3gis...@gmail.com on 18 Oct 2010 at 7:18

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Well, thinking about it, when you have "call waiting" (a.k.a. "second line") on 
a traditional phone, and a new call arives while you are talking, you hear 
quiet beeps, audible but not loud enough to disrupt your conversation. Because 
while you are talking you are not likely to see the screen, are you? So, either 
that, or short vibration would be nice to have, I think.

Original comment by egcros...@gmail.com on 19 Oct 2010 at 10:24

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Your right, that was my first thought too... Unfortunately as I said, making a 
beep is not possible when there is an ongoing GSM call (GSM chipset and audio 
chipset could be directly plugged together and prevent any other application to 
produce sound on the earpiece/speaker). 
So I think that it's not technically possible (or at least, even if possible on 
some device, not enough clean cause can crash some devices).
When it's a SIP call, I can produce every beep I want... but I guess that I 
should do something consistent in both case (onging GSM + incoming sip and 
ongoing SIP + incoming gsm). 

Original comment by r3gis...@gmail.com on 19 Oct 2010 at 11:11

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why phone calling conflict in call from VOIP to GSM ,GSM to VOIP,VOIP to CDMA 
,CDMA to WCDMA,etc and I wanna know about what happen in phone calling conflict 
and so busy in phone line.Don't hesitate me for asking.Please reply me.Thanks.

Original comment by tz0...@gmail.com on 20 Jul 2012 at 3:27

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Hi, the issue was NOT conflict when calling from VOIP *TO* GSM.
But it was that when you had an ongoing SIP call, and get an incoming GSM call 
(on the same phone) the application had something to do to manage properly the 
incoming GSM call that comes from the GSM application. This has been fixed 
normally.

Original comment by r3gis...@gmail.com on 20 Jul 2012 at 8:42