after lose connection and power softphone not ringing.

My datacenter went down and I lost access to vicidial and mysql.
After datacenter came back up I rebooted the servers and had everyone log back in.
The Zoiper softphones will register but will not ring.
Any ideas what might be wrong?
Mark
After datacenter came back up I rebooted the servers and had everyone log back in.
The Zoiper softphones will register but will not ring.
Any ideas what might be wrong?
Mark