 followed by a one or two digit code (on the dial pad), which represents the stored number. On many business telephone sys- tems there is station speed dial, specific to a particular telephone, and system speed dial, accessible to authorized telephones throughout the system. If the telephone system requires dialing 9 to dial out, you may have to program the 9 into your speed dial- ing, although some systems have built in intelligence to add it for you. Call Forwarding If you are not going to be at your desk, some telephones en- able you to forward calls to another telephone either within your office or at an outside location. Many systems can forward your 46 The Telecom Handbook CHAPTER 2 calls to different destinations depending upon whether your tele- phone is (1) unanswered or (2) busy, and whether the caller is (3) inside the office or (4) outside. Some telephones are set up with a button that, when depressed, will send your calls directly to Voice Mail if you are not at your desk. This prevents the caller from having to wait for your tele- phone to ring several times before going to Voice Mail. Off-system call forwarding enables you to forward your office telephone to your cell phone or home telephone. Call Pick Up This function enables you to answer another ringing telephone in your office even though the extension number that is ringing does not appear on your telephone. This is usually accomplished by pressing a button on your telephone labeled call pick-up. If you have a display you may see the name of the person whose call you have picked up, which will enable you to answer appro- priately, "Rose Bodin's office," rather than just saying "Hello." Group call pick-up lets you answer any ringing telephone in your pre-selected group. Directed call pick up requires you to know the extension number that is ringing and to dial it after pressing the call pick up button. Privacy In business telephone systems, it is customary for more than one telephone to pick up the same extension number or outside line such as 