I got a request from one of the departments that their department number is getting changed in next week. It is bit impossible to circulate the new number to everyone across the Globe as it is a service desk number.
My requirement is if someone calls the old number, people need to hear the message as "this number is changed and the new number is xxxxxx". After people listen this number, it should be diverted automatically to the new number.
Can you please suggest the best solution to meet my requirement? Possible, try to give me the steps in detail.
Many thanks in advance.