Communication Timeout
If you set a time for Communication Timeout, obtaining address books is cancelled when the Remote Address Book Server is not responding and the set time has elapsed.
1.
Press 
(Settings/Registration).
(Settings/Registration).2.
Press [Set Destination] → [Acquire Remote Address Book] → [Communication Timeout].
3.
Specify the Communication Timeout time by pressing [-] or [+] → press [OK].