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Re: [Linphone-users] Notification problems with iPhone calls


From: Chris Jackson
Subject: Re: [Linphone-users] Notification problems with iPhone calls
Date: Wed, 27 Oct 2021 10:20:51 +1300

For this test I was actually not using Wifi - the iPhone was on the mobile 
network and it was working fine (I was able to make normal calls). Sorry - I 
don’t seem to have mentioned that point below, but I think I did say this in 
the report when I sent in the logs. So, I can try this using Wifi, but your 
suggestion to disable Wifi is actually what I’ve already done.

Is it really true that time doesn’t matter? I was recently reading up on how 
the push notification registration works and while I didn’t really go into all 
the detail I thought that I read that there was a need to re-registration after 
some period? Also, it may not be time related - it’s just my first impression 
but I’ve not really characterised this particularly well as it takes a lot of 
time. What I can say is it seems mostly reliable if I call shortly after I’ve 
used the app, and mostly unreliable if I call when the iPhone has been sitting 
idle for a reasonable period.

Thanks.

Chris

> On 27/10/2021, at 10:10 AM, German Cancio <german.cancio@gmail.com> wrote:
> 
> Chris,
> 
> Would that rather look like an issue with your Wifi connection? The app on 
> iOS will be sent to rest only seconds after a call is completed and the app 
> is sent to background (e.g. locking the phone); it doesn’t make any 
> difference to the app whether a call is received one minute or one hour after 
> the previous one - it gets waken up by a push notification received by iOS 
> and passed to the app. But your Wifi connection might be put into dormant 
> mode by your router, so that push notification might not make it through in 
> time for picking up the call. That’s a quite common problem that ends up 
> affecting many VoIP apps.
> 
> Try disabling Wifi and see whether you still have the same issue using mobile 
> data. If that doesn’t fix the issue, you could try to enable logs and look 
> what the app does at the time of the call.
> 
> Germán
> 
> 
>> On 26 Oct 2021, at 21:17, Chris Jackson <chris@cd-jackson.com> wrote:
>> 
>> I’ve been testing out LinPhone, and while it mostly seems to work well, 
>> notifications of iPhone calls seems to be unreliable. I sent some logs 
>> recently but thought I should follow up with a message here to see if others 
>> were experiencing issues, or if it is just a problem with my system.
>> 
>> I’ve not characterised this well, but from a few tests it seems that longer 
>> periods of no use will result in calls not being established. It seems that 
>> possibly leaving the iPhone “off” for an hour (ie not opening any apps and 
>> certainly not opening LinPhone) will result in calls not being connected. I 
>> might be wrong as I’ve only tested this a couple of times and obviously this 
>> takes a lot of time between tests. Calls made after 30 or 40 minutes of no 
>> use have so far always worked ok though.
>> 
>> I wonder if this is a known issue or something that could be a settings 
>> issue in my system? I’m using the LinPhone cloud FlexiSip and have not 
>> changed any settings from default in the iPhone app.
>> 
>> Thanks
>> Chris
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> 
> 
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