I have a site that is configured correctly to register to the NRS at another location, however, until today we did not have the WAN link in place between the sites. It seems that the registration process has timed out at the remote site due to the fact it could not see the Primary or Alternate NRS, and it is no longer sending registration requests to the NRS. Is there a command to make this SigServer try and register without having to reboot it?