Has this bug ever been discovered by anyone?

I used Google Voice, when somebody called my GVoice #, the SIP rang first then when the phone rang, both got disconnected.

And BTW, any Google Voice App for N900 yet?


Here are some experiments I took.

#1: In the middle of a VOIP call-out, my friend called my cell phone #, two lines both survived.

#2:In the middle of a VOIP call-out, my friend called my Gizmo5 # using Gizmo software. Two lines remained alive.

#3: In the middle of a VOIP call-out, my friend called my GVoice #. because VOIP is faster than mobile, it did come in first and co-existed with VOIP call-out for a while (3 seconds?), then when the mobile call-in came, two lines-in (VOIP and Mobile) both disconnected. But VOIP call out still remained.

#4: In the middle of a VOIP call-out, use mobile to call-out, both lines remained.

#5: My friend called my GVoice #, VOIP call-in first came, lasted for a while, then when the mobile call-in came, they both disconnected.

#6: My friend called my Gizmo# using Gizmo, then used her cell phone called my cell phone #. It directly went into voice mail. And N900 showed missed call from her mobile. But the Gizmo call remained.

#7: My friend called my cell phone # using her cell phone, then called my Gizmo# using Gizmo. Gizmo prompted "not available". And N900 showed missed call from Gizmo. But the mobile call remained.

#8: In the middle of a mobile call-out, my friend called my Gizmo# using Gizmo. It got rejected. But mobile call-out remained.

The guess of #3 and #5 is that, when the second line (mobile call-in) came in, it got rejected by N900 and returned "busy" to GVoice. So GVoice stopped the both lines.

P.S. Neither my friend nor me answered any of those calls. Meaning it was only ring tones.

Yes, take a look at DialCentral (http://talk.maemo.org/showthread.php?t=29347), and also the author is working on something that integrates with the N900 telephony stack.

-jkq

Thank you for your info.

Are you using Google Voice alone, or Google Voice "with SIP service from Gizmo5 ( or other SIP provider)"? From what I can tell, GVoice "alone", does not provide a VoIP circuit/trunk, and uses "call back numbers" or "existing phone lines" to connect calls.

I'm using GV with built-in Skype and DialCentral. Seems to work good except you can't do DTMF tones with Skype. So no way to use call screening with it and GV. But I also don't have voice service on T-mobile....data only, so can't say I've run into trouble of both cell and SIP calls occurring at the same time.

I use GVoice and Gizmo5.

I've tried my E71, it doesn't work either. So it's the problem of Google then??

Yes! This is exactly the issue I ran into today, and would *love* to see resolved. Thanks so much for your experiments.

Quick question: What do you mean, by "VOIP" call-out? Is that using Skype, or Gizmo's paid service?

I'm not sure about that. One more datapoint to add to your investigation: When it happens to me, the caller will successfully leave me a Tmobile voicemail and not a Google Voice one.

In order for that to happen, I believe GV would have to successfully be connecting the caller to the voicemail account -- so GV is not just dropping both lines. The lines stop ringing because GV sees that the call has been answered (by the voicemail) and is now maintaining the connection between caller and voicemail.

The real issue, then, is that the N900 is sending the call to voicemail. I guess it just can't currently support simultaneous SIP and mobile calls? Or maybe it can, and I misunderstood what you meant by "VOIP" in your experiments. Maybe it's a bug.

OMG, haven't gotten back here for a long time. VOIP calls are Gizmo's paid service.

Hope more people can get involved in this.

This seems to be your combination of call supplier. I use sipgate and have no issuse whatsoever in this situation. I can have calls coming in with either SIP or Cell then another at same time ringing with the other and all handled as expected.