[SR-Users] You must register first with a S-CSCF/Server error on LIR select next S-CSCF

[王欣鑫]

Hello,  I'm using kamailio and OpenImsCore HSS module to set up an IMS
enviroment(P/I/S-CSCF and HSS). All these four modules are set up in one
cloud server in public network with different ports(4060/4061 5060 6060 3869
3870) to commonicate with each other. Now I have two users Alice and Bob,
they are in private network. I can register Alice and Bob with ImsDroid on
this IMS, however when I use Alice to call Bob, I can see "You must register
first with a S-CSCF" error. As I found this was caused by kamailio.cfg in
pcscf module, I comment out these lines below. Then I got another error
"Server error on LIR select next S-CSCF". And I captured packets on port
5060, I can see several "Request-Line: OPTIONS sip:sbc-2.ng-voice.com
SIP/2.0" and "Request-Line: OPTIONS sip:sbc-1.ng-voice.com SIP/2.0". 

 #if (!pcscf_is_registered("location")) { 
        #       send_reply("403","Forbidden - You must register first with a
S-CSCF"); 
        #       break; 
        #} 

What's wrong with my IMS? Could any body give me some help? 

Thank you! 

Here are my IMS configure files.
kamailio.zip
<http://sip-router.1086192.n5.nabble.com/file/n148131/kamailio.zip>  

Here are my hss configure files.
hss_config.zip
<http://sip-router.1086192.n5.nabble.com/file/n148131/hss_config.zip>  



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