Hello Alex, This is debug might be helpful.

Mar 29 12:24:05 canlvprx01 kamailio: 11(31941) DEBUG: <core> [receive.c:154]: receive_msg(): After parse_msg... Mar 29 12:24:05 canlvprx01 kamailio: 11(31941) DEBUG: <core> [receive.c:197]: receive_msg(): preparing to run routing scripts... Mar 29 12:24:05 canlvprx01 kamailio: 11(31941) DEBUG: sl [sl_funcs.c:412]: sl_filter_ACK(): DEBUG : sl_filter_ACK: to late to be a local ACK!

Slava.

From: "Slava Bendersky" volga629@networklab.ca To: "sr-users" sr-users@lists.sip-router.org Sent: Sunday, March 29, 2015 11:56:58 AM Subject: Re: [SR-Users] NAT Contact:

Hello Alex, I switched to aliases method, but in case like this,

AU ----> Internet ---> Kamailio ----> Asterisk AU2 <--Internet <---------| <------------|

Call between two extensions not working, because kamailio mark as external domain and LOCATION not saved, but even if I save location I see in kamctl ul show more then 5 records for each AOR.

Slava.

From: "Slava Bendersky" volga629@networklab.ca To: "sr-users" sr-users@lists.sip-router.org Sent: Sunday, March 29, 2015 9:52:18 AM Subject: Re: [SR-Users] NAT Contact:

Hello Alex, I switched to alias method, but there some CRITICAL message.

Mar 29 09:54:45 canlvprx01 kamailio: 2(31248) ERROR: *** cfgtrace:request_route=[NATDETECT] c=[/etc/kamailio/kamailio-asterisk.cfg] l=905 a=16 n=if Mar 29 09:54:45 canlvprx01 kamailio: 2(31248) ERROR: *** cfgtrace:request_route=[NATDETECT] c=[/etc/kamailio/kamailio-asterisk.cfg] l=901 a=24 n=is_first_hop Mar 29 09:54:45 canlvprx01 kamailio: 2(31248) DEBUG: siputils [sipops.c:161]: w_is_first_hop(): no 2nd via found - first hop Mar 29 09:54:45 canlvprx01 kamailio: 2(31248) CRITICAL: <core> [route.c:1237]: comp_num(): Invalid right operand (1) Mar 29 09:54:45 canlvprx01 kamailio: 2(31248) ERROR: *** cfgtrace:request_route=[NATDETECT] c=[/etc/kamailio/kamailio-asterisk.cfg] l=902 a=5 n=route Mar 29 09:54:45 canlvprx01 kamailio: 2(31248) ERROR: *** cfgtrace:request_route=[ADD_CONTACT_ALIAS] c=[/etc/kamailio/kamailio-asterisk.cfg] l=976 a=16 n=if Mar 29 09:54:45 canlvprx01 kamailio: 2(31248) ERROR: *** cfgtrace:request_route=[ADD_CONTACT_ALIAS] c=[/etc/kamailio/kamailio-asterisk.cfg] l=971 a=24 n=add_contact_alias Mar 29 09:54:45 canlvprx01 kamailio: 2(31248) DEBUG: nathelper [nathelper.c:970]: add_contact_alias_0_f(): no need to add alias param

From: "Alex Balashov" abalashov@evaristesys.com To: "sr-users" sr-users@lists.sip-router.org Sent: Saturday, March 28, 2015 7:31:54 PM Subject: Re: [SR-Users] NAT Contact:

On 03/28/2015 07:26 PM, Slava Bendersky wrote:

Is for mix of tcp transport and alias is required add any additional parameters in global configuration ?

I wouldn't think so.