A second terminal sends a request to initiate a communication session with a first terminal to a server. The server signals the first terminal to initiate the communication session. The first terminal determines an offset amount based upon the redirection timer information. The offset amount is added to or subtracted from a redirection timer value to determine a modified redirection timer value that takes into account time that elapses between messaging exchanged between the server and the first terminal that affects the first terminal determination of an amount of time remaining in a redirection timer of the server such that the determined modified redirection timer value is equal in value or substantially equal in value to the amount of time remaining in the redirection timer of the server.