In general, it happens in our network (as more and more Via headers are added).

Sorry, I didn't understand your last sentence. What do you mean by not connect if there is no active connection after location lookup?

From: sr-users [mailto:sr-users-bounces@lists.sip-router.org] On Behalf Of Daniel-Constantin Mierla
Sent: Monday, May 04, 2015 11:07 PM
To: Kamailio (SER) - Users Mailing List
Subject: Re: [SR-Users] Recommended configuration for TCP support

Hello,

where are typically those issues with truncated SDP? On the phones?

If you use tcp and have phones behind the nat, it is recommended to not connect if there is no active connection after location lookup -- see core functions for tcp.

Cheers,
Daniel

On 04/05/15 13:54, Mickael Marrache wrote:

Hi,

We sometimes get issues caused by truncated SDP bodies. Therefore, we are looking at using TCP instead of UDP.

What is the recommended configuration when TCP is used?

Currently, I only have the following:

children=16

listen=udp:<ip>:5060

listen=tcp:<ip>:5060

disable_tcp=no

tcp_connection_lifetime=605 (registration expiry is 600)

Also, is there a difference with UDP regarding NAT handling?

Thanks,

Mickael

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