[SR-Users] Knowing about the uac module with primary and secondary proxy setting

Hi, *sip_provider_proxy1[* uac module-register] ---> *kamailio* [dispatcher Module] ----> *Asterisk1* ----> *Asterisk 2* in my configuration kamailio register to the sip provider using *uac module*, sip information are stored in database (uacreg). when a incoming call(INVITE) come to kamailio it will dispatch call to Asterisk using* "dispatcher module".* Here i have couple of questions 1. If my SIP provider has a secondary proxy as a failover server (sip_provider_proxy2), can I configure Kamailio with the uac module to use the secondary proxy if the primary proxy fails? 2. Since my application is inbound-only, registration failure is only identified when the registration expires (3600 seconds = 1 hour). Can I use the dispatcher module to select the SIP proxy and switch the registration to the secondary proxy if the primary proxy is not reachable (using OPTIONS)?