If you are behind a DHCP/NAT server. You may require to run a STUN server in the SIP tab.
Also, I called the BV tech support, one of them says, I should the config file of SPA3000 given on their website for SPA3102.
http://www.broadvoice.com/support_in...od_sipura.html
Somebody please confirm, if this is going to work at all.