Problems Configuring Broadvoice

[DuNuNuBatman]

When I try to register my broadvoice line I get this error message in the log.
09:55:19.086 ExtLine::Register Line DN='10000' device='Broadvoice' can not be registered. External IP isn't resolved.
09:55:19.086 ExtLine::Register Use External IP for device line registration DN='10000' device='Broadvoice'

I'm not sure which host name it is trying to resolve, but I've pinged both sip.broadvoice.com and proxy.dca.broadvoice.com and have gotten a response from both.

 

[N_G]

This error means your external IP could not be resolved. We made a request via the configured STUN server but no IP was returned. Check the STUN server setting and check that port is open...