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Re: [Linphone-users] Linphone 3.4.1 on iPhone disconnects on standby
From: |
Alastair Johnson |
Subject: |
Re: [Linphone-users] Linphone 3.4.1 on iPhone disconnects on standby |
Date: |
Fri, 23 Sep 2011 12:04:36 +0100 |
User-agent: |
KMail/1.13.7 (Linux/2.6.39-gentoo-r3; KDE/4.6.5; x86_64; ; ) |
On Friday 23 September 2011, David wrote:
> Hey all!
>
> A friend of my installed "SIP Fone" on his Apple iPhone, it looks like
> it's actually Linphone 3.4.1.
I'm not familiar with the iPhone version of linphone, though I know there is
one. Is "SIP Fone" a clone?
> As soon as his phone goes into standby, the phone stops responding to
> the server. I did some packet tracing, the server is sending an OPTION
> packet every 15 seconds and the phone is answering with an OK.
>
> Trouble is when the phone goes into standby, it stops answering the
> OPTION packets, it doesn't answer INVITE either. When the phone comes
> back out of standby, it registers again as it if were a brand new
> connection.
I think this is known. Check the linphone-developers list archive for thread
"Linphone iPhone background incoming call problem". In short iOS 4.3 dropped
support for UDP background connections, and it doesn't only affect linphone.
They're looking for a workaround.
> What's weird is both skype and cell phone calls ring through, but the
> SIP Fone stops working as soon as it goes into standby.
skype may be using TCP, or have found a workaround. Cell calls don't use data.
> ( Standby might be the wrong word, it goes into this mode when he
> doesn't use the phone for a while or press the small button on the top
> of the phone ).
>
> What do I do?
Wait, and hope they find a workaround?
> Thanks,
>
> David