[Top][All Lists]

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [Linphone-developers] Linphone-iphone - background works only with T

From: Ramu
Subject: Re: [Linphone-developers] Linphone-iphone - background works only with TCP
Date: Sun, 11 Dec 2011 23:29:41 +0530


UDP background doesn't work in iOS.  That is restricted by Apple.

Call control happens on TCP (i.e SIP communication)
RTP goes in UDP when call gets connected.

TCP is working in background for iphone/ipad/ipod all versions which has multitasking support.

On Sun, Dec 11, 2011 at 4:38 PM, Muhammad Emam <address@hidden> wrote:
Hi everyone,

The iPhone latest git version doesn't work in background as expected when I choose the transport to be UDP.
When I try to call the phone while it's in background, I get "Cannot call, no response" on the caller, and nothing on the recipient (iPhone). if I reopen linphone on the recipient, I get a ring for a second then it closes on it's own. and that happens after I have terminated the call on the caller phone.
also, if I leave the application in the background for about 10 minutes, it gives me a notification message that someone is calling!

If I use TCP, everything works normally. so, I have some questions here...

1- What exactly happens when I switch between TCP and UDP in the settings?
2- When I switch to TCP, do you switch both control and voice connections to TCP or just the control connection?

I'm currently using iOS 4.3.3 on iPad. and connected to

Thank you
Muhammad Emam

Linphone-developers mailing list


reply via email to

[Prev in Thread] Current Thread [Next in Thread]