Actually I've come far to this problem
I have installed Kamailio as sip server/registrar and using default config. I 
have this situation: mobile cleint using IMSdroid (extension 100) windows 
client using Linphone (extension 300)
Register satus: both clients register successfuly
Both clients get connected to kamailio using my Wireless WIFI modem.
I dial (from IMSdroid) to linphone: Both ring OK.
Audio heard in IMSdroid is OK. Audio heard in windows linphone is just wind 
sound and jitter (or train sound, when I speak louder it gets louder)
Video is ok in both sides (both clients show video clearly)
Both clients get connected to kamailio (public internet IP)
What the problem is from?


Mitan Lopez
mita...@aol.com




-----Original Message-----
From: Moacir Ferreira <moacirferre...@hotmail.com>
To: Kamailio Mail List <sr-users@lists.sip-router.org>
Sent: Sun, Mar 3, 2013 11:54 pm
Subject: Re: [SR-Users] Kamailio problem with both clients in the same NAT


The best way to understand all NAT variations -> 
http://en.wikipedia.org/wiki/Network_address_translation
 
In there they explain:
 
Symmetric NAT

Each request from the same internal IP address and port to a specific 
destination IP address and port is mapped to a unique external source IP 
address and port, if the same internal host sends a packet even with the same 
source address and port but to a different destination, a different mapping is 
used.
Only an external host that receives a packet from an internal host can send a 
packet back.
 



Date: Sun, 3 Mar 2013 23:05:46 +0700
From: onmyway...@gmail.com
To: sr-users@lists.sip-router.org
Subject: Re: [SR-Users] Kamailio problem with both clients in the same NAT


Is that symmetric NAT ?



On Thu, Feb 28, 2013 at 6:46 PM, mohavere36 <mohaver...@yahoo.com> wrote:

              
     hi, I'm struggling for 2 days to make a config file for kamailio in    a 
situation where clients arein the same nat but kamailio has public    IP, one 
way audio problem, does any one have a solution for it?
    
  

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-- 
Khoa Pham
HCMC University of Science
Faculty of Information Technology


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