Is there any way to restrict each extension to only having one phone registered to it at one time? We're currently developing a program with an integrated softphone. Sometimes the program crashes and shuts down without executing the appropriate unregistration code, leaving that instance of the phone registered. When the user logs into the program again, they are logging in with a second instance of the phone, registering to the same extension again -- ergo, two registrations to the same extension. This appears to mess things up a bit when calls are made/received (i.e., calls never seem to get through when multiple instances of the same phone are registered to the same extension). I can see a lot of documentation about phone provisioning and allowing multiple phones to connect to the same extension, but nothing about limiting them. Thanks for your help. P.S., In the same sort of vein ... is there any way to unregister a registered phone/extension via the pbx management console? That would be seriously handy.