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Re: [Linphone-users] Call drops after 32 seconds

From: Robert Dixon
Subject: Re: [Linphone-users] Call drops after 32 seconds
Date: Tue, 18 Jun 2019 08:42:37 -0400

This 30 second timeout problem has plagued Linphone users for years, and it has been brought up on many lists, with no real solution.
I was able to partially solve it on a local network by eliminating the use of TCP in the Network options. Just use
I was ecstatic.  Then I went to use it on a larger network, and it failed again in the same way. I do not understand this.


On Jun 18, 2019, at 7:18 AM, Thomaier, Simon <address@hidden> wrote:

Hello all,

sorry, the mail was signed with a certificate, maybe thats why.

Here the original text:
Hello all,

my setup is the Linphone App on Nokia 7.1 connecting to an Asterisk SIP Server.

Incoming calls get dropped after 32 seconds each time.
Outgoing calls work just fine.

Some researched showed it could be the 200 ACK packet that is not received.

I´m monitored all packages on the firewall, I see 200 ACK from Linphone to the Asterisk but not from Asterisk to Linphone.
After 32 seconds I get a TCP Retransmission from Asterisk to Linphone followed by a BYE  

As a Firewall we use Sonicwall. so I tried to turn off the SIP Transformation (SIP ALG) but it didn´t help unfortunately. Consistend NAT is enabled.

Do you guys have any hint to where to look further into? Running out of ideas (google results) 

Thank you very much in advance.

Kind regards,
Von: Linphone-users <linphone-users-bounces+sthomaier=address@hidden> Im Auftrag von Chris Woods
Gesendet: Dienstag, 18. Juni 2019 11:49
An: address@hidden
Betreff: Re: [Linphone-users] Call drops after 32 seconds
No diagnostic info or description of your testing? 


On Tue, 18 Jun 2019, 08:46 Thomaier, Simon, <address@hidden> wrote:
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