> 
> To me that looks like whatever router you are using in front 
> of the phones is doing NAT compensation via a SIP ALG. 
> Sometimes it's difficult to disable the ALG, depending on the router.

I concur with you.  Either that or the phones have STUN enabled.

Does x-lite work properly when you put it in the same private network as your 
polycoms?  If it does then this is a clue that Polycom is doing something like 
STUN.  If it doesn't then it points to your router.

One more thing.  You say that your x-lite registration looks like:
<sip:[email protected]:28436;rinstance=b83c40108342c5fb;x-sipX-privcontact=74.2.3.4%3A28436>

This does not appear normal to me.  Basically, the contact should show the 
public IP address of the x-lite whereas the x-sipX-privcontact should show the 
private IP addresss.  In your case, they are the same thing - this is 
indicative of some sort of misconfiguration but not sure where.

Please review 
http://wiki.sipfoundry.org/display/xecsuserV4r0/Remote+User+NAT+Traversal to 
make sure your setup is sound.  Keep us posted.




> 
> Could you post some information about what networking 
> equipment you are using, particularly what firewall you're 
> using on both sides.
> 
> [email protected] wrote:
> > Hello all;
> >
> > I am playing around with setting up my test phones (Polycom 650 and 
> > Polycom 321) to connect to a SIPx server with a public IP, and the 
> > phones are behind NAT.
> >
> > I have enabled NAT Traversal under Internet Calling, and I have 
> > removed all subnets from Intranet subnets.
> >
> > IP of Server : 74.1.1.1
> > IP of Phones : 192.168.1.130 and 131
> > External IP of NAT : 74.2.3.4
> >
> > I am seeing the phones regsitered with the nonat option.
> >
> > 
> sip:[email protected]<sip:[email protected]:1178;transport=tcp;x-sipX-nonat>70
> > 8 sipxecs
> > 
> sip:[email protected]<sip:[email protected]:1063;transport=tcp;x-sipX-nonat>13
> > 25 sipxecs
> >
> >
> > Am I missing a step on configuring something to have the Polycom 
> > phones connect as a NAT client? I have X-Lite working just fine:
> >
> > "Test Phone"<sip:[email protected]>
> > 
> <sip:[email protected]:28436;rinstance=b83c40108342c5fb;x-sipX-privcontact
> > =74.2.3.4%3A28436>
> > 611  sipxecs
> >
> >
> > I am using the following BootROM and SIP App:
> >
> > spip_ssip_vvx_3_1_3RevC_release_sig_split.zip
> > spip_ssip_BootROM_4_2_1_release_sig.zip
> >
> >
> > Thanks,
> >
> > B
> > _______________________________________________
> > sipx-users mailing list [email protected] List 
> Archive: 
> > http://list.sipfoundry.org/archive/sipx-users
> > Unsubscribe: http://list.sipfoundry.org/mailman/listinfo/sipx-users
> > sipXecs IP PBX -- http://www.sipfoundry.org/
> >   
> 
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