[Serusers] serctl - serweb

i'm still trying to get a UA (softphone to "REGISTER") with my ser box (solaris 10) do serctl and serweb serve the same purpose? do i really need to setup serweb? can i do everything via serctl? also, is there such a thing as auto-registration with UA's to the registrar of the ser box? if not, must i do a "serctl add" to add a user first? something I'm seeing is, my softphone sends a "REGISTER" message to the ser box. the ser box appears to send 70 (i think 70 because of the default max-forwards value) dns request to the dns server, then the ser box sends a "483 Too many Hops" message back to the latop UA softphone. any ideas why this is happening? thanks aaron