I have been playing with SER for quite some time and always faced this problem. Whenever i changed the configuration file for ser (ser.cfg) , i have to issue a serctl restart for the changes to take effect. The problem is everytime i issue this restart , the users that are currently active and logged in, will not be able to make any more calls until they restart their SIP Device. Is there anyway i can let the changes take effect without affecting currently logged in users ?