Does anyone have any ideas on why a Valcom VIP 201 paging server keeps getting blacklisted in 3cx? The VIP 201 will stay registered in 3cx anywhere from an hour to maybe half a day. Then it will be blacklisted for "too many failed authentications. After the timeout period, the device will register again succesfully in 3cx. No previous entries are logged in the server (however I do not have verbose mode turned on). I have re-created the account in 3cx for the VIP 201, and double checked the authentication the VIP 201 is using to connect to 3cx. This location has been using 3cx for three months. 3 weeks ago it was updated to 3cx version 10, and it seems then is about when the problem started.