You don't a port in those settings, it's triggering IPv6 code. On Monday, April 11, 2016, Nagorny, Dimitry <dimitry.nagorny@robot5.de> wrote:

Good afternoon Ladies and Gentlemen,

I’m using FreeSWITCH (1.7.0 git cae2553 2015-12-11 00:23:48Z 64bit) as B2BUA between Kamailio and our own Server. Our Server is attached to FreeSWICH via ESL.

From Kamailio into our own Server it is connecting w/o problems. But when I initiate a call from our Server to Kamailio via FreeSWITCH I’ve a weird reaction:

Network-Overview:

PSTN(192.168.1.30) à Kamailio(192.168.1.150/10.250.5.74) à FreeSWITCH(10.250.5.72) à Our Server(10.250.5.67)

1st Initial Invite to FS:

INVITE sip:7@10.250.5.72 <javascript:_e(%7B%7D,'cvml','sip:7@10.250.5.72');> SIP/2.0

Via: SIP/2.0/UDP 10.250.5.17:5090;branch=z9hG4bK.GSRDySx-y;rport

From: <sip:1001@10.250.5.72 <javascript:_e(%7B%7D,'cvml','sip:1001@10.250.5.72');>>;tag=nDaJDf3lz

To: sip:7@10.250.5.72 <javascript:_e(%7B%7D,'cvml','sip:7@10.250.5.72');>

Route: <sip:10.250.5.72:5080;lr>

Content-Type: application/sdp

7 is mapped to go to our Server and our Server then is trying to connect to a UA (2031) at PSTN via FreeSWITCH gateway(Kamailio):

INVITE sip:2031@10.250.5.74:5070 SIP/2.0

Via: SIP/2.0/UDP 10.250.5.72:5070;rport;branch=z9hG4bKmgrc4De2Q0ySN

From: "" <sip:1001@*[10.250.5.72:5070 <http://10.250.5.72:5070>]*

...

;tag=U5jj715ZB6maK

To: <sip:2031@10.250.5.74:5070>

This Invite was built by FreeSWITCH and I could confirm that the „SIP-Invite“ sent via ESL to FreeSWITCH from our Server was correct but as you can see here FreeSWITCH „malformed“ the From-Header with the *square brackets* and due to that I’m getting error from PSTN later:

SIP/2.0 400 Bad Request

Warning: 399 192.168.1.30 "Malformed headers : From "

To: <sip:2031@10.250.5.74:5070>;tag=ae0f6cb7ca85c1fb958bd8bed1f9b7b7

Here some config data that is set in FreeSWITCH:

Vars.xml:

<X-PRE-PROCESS cmd="set" data="domain=10.250.5.72"/>

<X-PRE-PROCESS cmd="set" data="external_sip_port=5070"/>

<X-PRE-PROCESS cmd="set" data="internal_sip_port=5080"/>

Sip-profiles/external/testpbx.xml:

<include>

<gateway name="testpbx">

<param name="realm" value="10.250.5.74:5070"/>

<param name="from-domain" value="10.250.5.72:5070"/>

<param name="proxy" value="10.250.5.74:5070"/>

…

</gateway>

</include>

Sip-profiles/external.xml and internal.xml:

<param name="rtp-ip" value="10.250.5.72"/>

<param name="sip-ip" value="10.250.5.72"/>

<param name="ext-rtp-ip" value="10.250.5.72"/>

<param name="ext-sip-ip" value="10.250.5.72"/>

Can anyone help why FreeSWITCH is doing this or can point to a class where the the From Header is built? Maybe someone knows a solution?

Here you can find full SIP-Trace Logs and Full FreeSWITCH Debugging Log: https://we.tl/FtPuknRrSw

Very Respectfully

*Dimitry Nagorny*

Trainee

-- *Brian West* brian@freeswitch.org *Twitter: @FreeSWITCH , @briankwest* http://www.freeswitchbook.com http://www.freeswitchcookbook.com https://www.gofundme.com/freeswitch_ubuntu Got Bugs? Report them here <https://freeswitch.org/jira>! | Reddit: /r/freeswitch <https://www.reddit.com/r/freeswitch> *T:*+19184209001 | *F:*+19184209002 | *M:*+1918424WEST (9378) *iNUM:*+883 5100 1420 9001 | *ISN:*410*543 | *Skype:*briankwest