UTT-901 User Manual16the user as using outbound proxy automatically. If theconfiguration has been disabled, the gateway can stillbe registered to the server, but can't make SIP call;configuration of registered call by the gateway willnot have impacts on SIP point-to-point call.Auto DetectServerConfigure automatic detection server of the gateway.Server Auto Swap Configure main and backup auto-swap server; if thegateway enables main and backup server function,the automatic detection and auto-swap functionsshould both be chosen.Note: if you want to register and call through server, you mustconfigure corresponding numbers(which are usually SIP accounts)to local port, otherwise the gateway will reject for sending outregister message when it considers that there is no number.4.5 Advance configuration4.5.1 Net Service configurationUser can set up Telnet, HTTP, RTP port on this page and view DHCPtable.After the aforesaid network and VoIP configuration, if the network cancommunicate correctly, the user should be able to make VOIP callsthrough the register and proxy.After submitting the configuration, if the status is still incorrect, clickthe menu in the left to renovate. Please do not click the “apply”continuously, since some ISP may inhibit the gateway to register orcancel continuously. If users click “apply” continuously, or registerand cancel frequently, the server may stop response, this will make thegateway can not receive the certifications of register/cancel requestand show error register status!