Section 3: Features38 Section 3: Features DS1000/2000 Product DescriptionTo time your call if you have a Manual Call Timer key:1. Place or answer Intercom or trunk call + Press Manual Call Timer key.Call Waiting / Camp-OnAvailability: All versions.With Call Waiting, an extension user may call a busy extension andwait in line (Camp-On) without hanging up. When the user Camps-On, the system signals the busy extension with two beeps indicat-ing the first waiting call. (The busy extension can be on a handsetor Handsfree call.) The beeps periodically repeat while the callwaits. The call goes through when the extension becomes free.If an extension has more than one caller waiting, they queue on a first-in/first-out basis (FIFO). Theextension will not hear Camp-On beeps for additional waiting calls.Feature OperationTo Camp-On to a busy extension:1. Call busy extension + Dial 2 (do not hang up).If you hang up, the system converts your Camp-On to a Callback.2. Speak to your co-worker when they answer their Camp-On ring.CallbackAvailability: All versions.When an extension user calls a busy co-worker, they can leave aCallback request for a return call.The system services Callback requests as follows: Caller at extension A leaves a Callback at extension B. When extension B becomes idle, the system rings extension A. This is the Callback ring. Once caller A answers the Callback ring, the system rings (formerly busy) extension B. As soon as extension B answers, the system sets up an Intercom call between A and B.An extension user can leave a Callback at many extensions simultaneously. The system processesthe Callbacks as the extensions become free. In addition, many extensions can leave a Callback atthe same extension. The system processes these Callbacks on a first-in/first-out (FIFO) basis.If an extension user leaves a Callback request and then fails to answer within four rings, the systemcancels the Callback.Call Waiting helps busyextension users know whenthey have additional waitingcalls. It also lets callers waitin line for a busy extensionwithout being forgotten.With Callback, a user doesnot have to repeatedly call abusy extension back, hopingto find it idle.