We had this exact problem with these Panasonic phones. We had a customer with 2 units that seemed identical to me, and one had this behavior and one didn’t. I tried resets, firmware updates, etc., but no hope for the one unit. If it helps, the unit that is still actually working at their office shows useragent string of Panasonic_KX-TGP550T04/12.58.

-Evan

From: FreeSWITCH-users [mailto:freeswitch-users-bounces@lists.freeswitch.org] On Behalf Of Sean Devoy
Sent: Tuesday, February 20, 2018 12:20 PM
To: FreeSWITCH Users Help <freeswitch-users@lists.freeswitch.org>
Subject: Re: [Freeswitch-users] NAT port problem

LOL! Exactly. This device is, shall we say, VERY BASIC. It worked with the old router. When they upgraded to a SONICWALL I cannot get it to work. I have learned my lesson. In the future I will only allow a quality ATA and DECT phone for this type of solution. For the record this is a Panasonic KX-TGP550.

I tried alternate local port numbers. I tried all the ALG settings on the SonicWALL. I am upgrading from 1.2 <hangs head in shame> to 1.6 in hopes that NDLB rport will fix it.

Thanks to all who replied.

From: FreeSWITCH-users [mailto:freeswitch-users-bounces@lists.freeswitch.org] On Behalf Of Brian West
Sent: Monday, February 19, 2018 8:08 AM
To: FreeSWITCH Users Help <freeswitch-users@lists.freeswitch.org>
Subject: Re: [Freeswitch-users] NAT port problem

In this case its probably not an ALG, you should enable rport in your device and NOT force it with the NDLB param, if your device doesn't support it, throw that device in the trash or take a hammer to it, and buy a device from a manufacture that actually made an effort to implement SIP.

On Mon, Feb 19, 2018 at 6:10 AM, Carlos Eduardo <kaduww@gmail.com> wrote:

It can be an ALG problem (https://www.voip-info.org/wiki/view/Routers+SIP+ALG). Try running another sip profile with a different sip port, 5070 for example, and register the phone using this port.

2018-02-18 19:43 GMT-03:00 Sean Devoy <sdevoy@bizfocused.com>:

Thanks Brian. I should have been more clear. That was exactly my diagnosis and attempted fix using this line:

<param name="NDLB-force-rport" value="true"/>

in the <param> section of the <user> in the Directory file has no effect.

That means one of two things. I am putting it in the wrong file or I must bite the bullet and get FS up to the current version.

Thanks again.

From: FreeSWITCH-users [mailto:freeswitch-users-bounces@lists.freeswitch.org] On Behalf Of Brian West
Sent: Sunday, February 18, 2018 11:51 AM
To: FreeSWITCH Users Help <freeswitch-users@lists.freeswitch.org>
Subject: Re: [Freeswitch-users] NAT port problem

Enable rport, The issue was from 15183 and we respond to 5074, so the device never receives the 401.

Nat 101

/b

On Sun, Feb 18, 2018 at 11:28 AM, Sean Devoy <sdevoy@bizfocused.com> wrote:

HI all,

I have a NAT problem I can’t seem to get past. The phone is NATed. From my location with a FIOS router it works fine. But the client recently upgraded to a new SonicWall router and splat, this device failed. There are about 10 Cisco phones at this location working fine. This phone is a Panasonic KX-TGP550.

I have poured over the sip logs and identified the problem. The sip packets come from the router IP and port 15xxx but are returned to that IP and the phone’s source port 5060 instead of 15xxx.

I have tried every NDLB feature I can find, but not every combination. The responses always go back to the wrong port.

Any help would be greatly appreciated.

Thanks,

Sean

Sample sip dump:

    ------------------------------------------------------------------------

recv 492 bytes from udp/[98.204.241.22]:15183 at 23:16:33.764217:

   ------------------------------------------------------------------------

     REGISTER sip:XYZ.bizfocused.com:5060 SIP/2.0

     Via: SIP/2.0/UDP 192.168.2.109:5074;branch=z9hG4bKb6be703b

     Max-Forwards: 70

     To: <sip:34@XYZ.bizfocused.com>

     From: <sip:34@XYZ.bizfocused.com>;tag=3263080642

     Call-ID: 97742e94-d1dc14228bad9baadd810080f041d179@192.168.2.109

     CSeq: 1 REGISTER

     Contact: <sip:34@192.168.2.109:5074>

     Expires: 3600

     Allow: INVITE,ACK,CANCEL,BYE,OPTIONS,NOTIFY,REFER,UPDATE

     User-Agent: Panasonic_KX-TGP550T04/13.33 (0080f041d179)

     Content-Length: 0



    ------------------------------------------------------------------------

send 669 bytes to udp/[98.204.241.22]:5074 at 23:16:33.764394:

   ------------------------------------------------------------------------

     SIP/2.0 401 Unauthorized

_________________________________________________________________________
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Official FreeSWITCH Sites
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--

Brian West | Co-founder and Developer

Need Commercial support? email sales@freeswitch.com

FreeSWITCH Solutions | 17345 Civic Drive #2531 Brookfield, WI 53045

Email: brian@freeswitch.com

Mobile: 918-424-9378

Website: https://www.FreeSWITCH.com

_________________________________________________________________________
Professional FreeSWITCH Consulting Services:
consulting@freeswitch.org
http://www.freeswitchsolutions.com

Official FreeSWITCH Sites
http://www.freeswitch.org
http://confluence.freeswitch.org
http://www.cluecon.com

FreeSWITCH-users mailing list
FreeSWITCH-users@lists.freeswitch.org
http://lists.freeswitch.org/mailman/listinfo/freeswitch-users
UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users
http://www.freeswitch.org

--

Carlos E. Wagner

Tecnólogo em Telecomunicações, OCP, dCAA

E-mail: kaduww@gmail.com

Fone: +55 48 9981-0894
Skype: carlos.e.wagner

www.blogdovoip.com

_________________________________________________________________________
Professional FreeSWITCH Consulting Services:
consulting@freeswitch.org
http://www.freeswitchsolutions.com

Official FreeSWITCH Sites
http://www.freeswitch.org
http://confluence.freeswitch.org
http://www.cluecon.com

FreeSWITCH-users mailing list
FreeSWITCH-users@lists.freeswitch.org
http://lists.freeswitch.org/mailman/listinfo/freeswitch-users
UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users
http://www.freeswitch.org

Brian West | Co-founder and Developer

Need Commercial support? email sales@freeswitch.com

FreeSWITCH Solutions | 17345 Civic Drive #2531 Brookfield, WI 53045

Email: brian@freeswitch.com

Mobile: 918-424-9378

Website: https://www.FreeSWITCH.com