These have helped me in the past when dealing with NAT.

Chapter 12 'Handling NAT' of the FreeSWITCH 1.2 book

http://www.voip-info.org/wiki/view/NAT+and+VOIP

https://wiki.freeswitch.org/wiki/NAT


On 19 December 2014 at 03:12, <freeswitch-users-request@lists.freeswitch.org> wrote:
Send FreeSWITCH-users mailing list submissions to
        freeswitch-users@lists.freeswitch.org

To subscribe or unsubscribe via the World Wide Web, visit
        http://lists.freeswitch.org/mailman/listinfo/freeswitch-users
or, via email, send a message with subject or body 'help' to
        freeswitch-users-request@lists.freeswitch.org

You can reach the person managing the list at
        freeswitch-users-owner@lists.freeswitch.org

When replying, please edit your Subject line so it is more specific
than "Re: Contents of FreeSWITCH-users digest..."

Today's Topics:

   1. Provider Configuration: switch2voip.us (George F. Phelps)
   2. Re: RTP NAT No Audio on EC2 (Brian West)


---------- Forwarded message ----------
From: "George F. Phelps" <GeorgePhelps@gfphelps.com>
To: <freeswitch-users@lists.freeswitch.org>
Cc: 
Date: Thu, 18 Dec 2014 19:52:01 -0500
Subject: [Freeswitch-users] Provider Configuration: switch2voip.us
Could someone please provide an example, Freeswitch Provider Configuration
for using a SIP trunk from switch2voip.us?

I tried to use the tutorial (at the URL below), for the "Digest
Authentication (Account & PIN)", as an example - but I have been
unsuccessful.


http://switch2voip.us/index.php/customer-support/byod/sip-trunking-configura
tion

Thanks!






---------- Forwarded message ----------
From: Brian West <brian@freeswitch.org>
To: FreeSWITCH Users Help <freeswitch-users@lists.freeswitch.org>
Cc: 
Date: Thu, 18 Dec 2014 21:12:19 -0600
Subject: Re: [Freeswitch-users] RTP NAT No Audio on EC2
A good understanding of how NAT works is probably the best place to start, I'm not too sure which materials you should read to start off with... anyone have a link to a good primer on what NAT is and how the various versions of NAT work?

On Thu, Dec 18, 2014 at 4:17 PM, Callum Guy <callum.guy@x-on.co.uk> wrote:

Thanks for responding. I've retested from another location and the calls are now working as expected without any change so I presume it was an issue with the device/network I was calling from. Sorry to waste your time but I still struggle with a workflow for determining RTP issues. Does anyone have any advice for a good article/book which would help? Cheers

On 18 Dec 2014 20:44, "Brian West" <brian@freeswitch.org> wrote:
you need to set ext-sip-ip and ext-rtp-ip, and it looks like your client isn't providing you a valid ip address either.  

On Thu, Dec 18, 2014 at 11:28 AM, Callum Guy <callum.guy@x-on.co.uk> wrote:
​OK so i have been changing these options as recommended:

<param name="sip-ip" value="1.2.3.4"/><param name="
​​
rtp-ip"
 value="auto"/>​
The SIP option I set to my real external (elastic) IP and it broke the SIP comms - i removed that because SIP is working correctly.

The RTP option was set as auto but this doesn't appear to have made any noticeable difference.

I haven't found any detailed information about what those fields actually do so apologies for the shot-in-the-dark approach here.

Any further ideas?

______________________________

Callum Guy

X-on
Framlingham Technology Centre
Station Road, Framlingham,
Suffolk, IP13 9EZ

T       0333 332 0116
E       callum.guy@x-on.co.uk




X-on is a trading name of Storacall Technology Ltd a limited company registered in England and Wales
Registered Office : Avaland House, 110 London Road, Apsley, Hemel Hempstead, Herts, HP3 9SD  
Company Registration No. 2578478 

This email has been sent from X-on.The contents and attachments are confidential to the sender and the intended addressees.If the message
is received by anyone other than the addressee please return the message to the sender by replying to it and then delete the message from 
your computer without copying or disclosing the contents to anyone.Opinions, conclusions and statements of intent in this email are those of
the sender and do not bind X-on unless confirmed by authorised representatives independently of this message.While best endeavours have 
been taken to avoid transmission of viruses, it is the responsibility of the recipient to scan for these.Please note emails sent to and from X-on 
are routinely monitored for record keeping and quality control, to ensure regulatory compliance and prevent unauthorised use of our systems.

Please consider the environment before printing this email.

On 18 December 2014 at 16:58, Callum Guy <callum.guy@x-on.co.uk> wrote:
I have not changed those values yet so will look into that immediately and get back to you.

Most of my changes are those cited here: https://wiki.freeswitch.org/wiki/Amazon_EC2 which include ext- prefixed versions of those parameters but i haven't changed those without the prefix.

Thanks, back soon



______________________________

Callum Guy

X-on
Framlingham Technology Centre
Station Road, Framlingham,
Suffolk, IP13 9EZ

T       0333 332 0116
E       callum.guy@x-on.co.uk




X-on is a trading name of Storacall Technology Ltd a limited company registered in England and Wales
Registered Office : Avaland House, 110 London Road, Apsley, Hemel Hempstead, Herts, HP3 9SD  
Company Registration No. 2578478 

This email has been sent from X-on.The contents and attachments are confidential to the sender and the intended addressees.If the message
is received by anyone other than the addressee please return the message to the sender by replying to it and then delete the message from 
your computer without copying or disclosing the contents to anyone.Opinions, conclusions and statements of intent in this email are those of
the sender and do not bind X-on unless confirmed by authorised representatives independently of this message.While best endeavours have 
been taken to avoid transmission of viruses, it is the responsibility of the recipient to scan for these.Please note emails sent to and from X-on 
are routinely monitored for record keeping and quality control, to ensure regulatory compliance and prevent unauthorised use of our systems.

Please consider the environment before printing this email.

On 18 December 2014 at 16:51, Ítalo Rossi <italorossib@gmail.com> wrote:
Did you changed the rtp-ip and sip-ip vars in your profile?


On Thu, Dec 18, 2014 at 1:39 PM, Callum Guy <callum.guy@x-on.co.uk> wrote:
Hi All,

Its been a while since i've written to this board so i hope you're all well. Today i've been trying out FreeSWITCH on AWS for the first time and it certainly appears to be working as expected however my configuration must be wrong for the environment so i wondered if someone here could offer some advice?

A TCP dump shows correct SIP negotiation between my handset and the server over the respective public IP's however when viewing the flow in Wireshark the RTP heads off to my handsets internal IP. 

I see this in the CLI:

2014-12-18 16:32:28.531022 [DEBUG] switch_core_media.c:5141 AUDIO RTP [sofia/internal/1000@54.77.115.40] 172.31.6.36 port 30074 -> 192.168.5.195 port 16468 codec: 0 ms: 20

Does anyone have any keen suggestions?

Thanks,

Callum
______________________________

Callum Guy

X-on
Framlingham Technology Centre
Station Road, Framlingham,
Suffolk, IP13 9EZ

T       0333 332 0116
E       callum.guy@x-on.co.uk




X-on is a trading name of Storacall Technology Ltd a limited company registered in England and Wales
Registered Office : Avaland House, 110 London Road, Apsley, Hemel Hempstead, Herts, HP3 9SD  
Company Registration No. 2578478 

This email has been sent from X-on.The contents and attachments are confidential to the sender and the intended addressees.If the message
is received by anyone other than the addressee please return the message to the sender by replying to it and then delete the message from 
your computer without copying or disclosing the contents to anyone.Opinions, conclusions and statements of intent in this email are those of
the sender and do not bind X-on unless confirmed by authorised representatives independently of this message.While best endeavours have 
been taken to avoid transmission of viruses, it is the responsibility of the recipient to scan for these.Please note emails sent to and from X-on 
are routinely monitored for record keeping and quality control, to ensure regulatory compliance and prevent unauthorised use of our systems.

Please consider the environment before printing this email.

_________________________________________________________________________
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


--
Ítalo Rossi

_________________________________________________________________________
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

_________________________________________________________________________
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
brian@freeswitch.org


Twitter: @FreeSWITCH , @briankwest
http://www.freeswitchbook.com
http://www.freeswitchcookbook.com

T:+19184209001 | F:+19184209002 | M:+1918424WEST (9378)
iNUM:+883 5100 1420 9001 | ISN:410*543 | Skype:briankwest


_________________________________________________________________________
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

_________________________________________________________________________
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
brian@freeswitch.org


Twitter: @FreeSWITCH , @briankwest
http://www.freeswitchbook.com
http://www.freeswitchcookbook.com

T:+19184209001 | F:+19184209002 | M:+1918424WEST (9378)
iNUM:+883 5100 1420 9001 | ISN:410*543 | Skype:briankwest


_______________________________________________
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



--
Luke Milbourne

Tel: 07857154817
Google Talk/Email: luke.milbourne@gmail.com