ESI, IVX analog phone user guide.

• Placing calls
  When you first lift the handset you will hear internal dial tone. Dial 9 (or 8 or 7) to access an outside line and dial the number. To place an internal call, simply dial the extension number, department number, etc.
• Transfer of outside calls
  While connected to an outside call, FLASH and dial the extension number. Hang up immediately to perform a blind transfer, wait until the called party answers, announce the caller and then hang up. If the transferred-to party does not answer, FLASH to be reconnected to the original caller.
• Conference
  Establish the first call, Press "Flash" twice, rapidly, to place the call on conference. Place the second call, once connected press "Flash: to conference both calls.
• Transfer a call to a mailbox
  To transfer an outside caller to another user’s mailbox, FLASH and dial # and the mailbox number. You and the caller will be connected to that user’s personal greeting. You may choose to hang up immediately or listen to a portion of the personal greeting to assure yourself that you have placed the caller into the correct mailbox. If not, FLASH to exit the mailbox and be reconnected to the original caller. Note: Regardless of when you hang up, the caller will hear the entire personal greeting. To insure the privacy of the message, you will automatically be disconnected at the record tone.
• Transfer a call to the main greeting
  To transfer an outside caller to the main greeting, FLASH, dial # and hang up.
• Transfer a user to his/her mailbox
  To transfer to his/her mailbox a user who's calling from the outside to pick up messages, FLASH, dial *, and the appropriate mailbox number and hang up.
• Call forwarding
  Your station has been pre-programmed by the Installer to call-forward your phone when it is busy or does not answer (usually to your mailbox). In addition you can temporarily call-forward all of your calls to another station or another user’s mailbox.
  Lift the handset, dial 5 6 5 and dial the extension number (or # and the mailbox number) to which the system should forward all calls.
  Note: If the forwarded-to station is busy or does not answer a forwarded call, IVX will return the call to your mailbox.
  To turn off call forwarding, dial 5 6 5 * without selecting a destination, and hang up.
• Call pick-up
  A call ringing at another station can be picked-up by pressing * and dialing the extension number. Dialing * 0 will answer the longest ringing outside call.
• Call waiting
  If you have enabled call waiting for your station (* xxx 5 3, where xxx represents your extension number), you will hear a tone in your earpiece. FLASH to toggle between the original call and the call waiting. To drop either call, hang up while connected to the call to be dropped. When your phone rings, lift the handset and you will be reconnected to the other caller.
• Call Hold (Park)
  Park is used to place callers on “hold” for retrieval from any station within IVX.
  To Hold (park) a call
  While on an outside call, FLASH and dial * * *. A short voice prompt will tell which line number the parked call is using; you will then receive internal dial tone.
• To retrieve a call from hold (parked) call
  From internal dial tone, dial * * and the line number on which the call is parked. Dial * * 0 to answer the oldest parked call in the system.
• Hold (Park) recall
  If a parked or held call is not retrieved during the period of time (set by the Installer), it will recall to your phone if your station is idle. You will hear three short ring tones. Lift the handset; you will be connected to the parked call.
  If you are on a call when the recall occurs, you will hear a call waiting tone. To toggle between the two calls, FLASH (or hang up, wait for ring, then answer).
• Page
  This key allows for paging through an overhead paging system and/or designated available telephone speakers.
  Press # and 0 to access all available stations.
  Press # and 1, 2 or 3 to access a programmed paging zone.
  Note: A page will not be output to the speakers of phones in use.
  Tip: To page for pick up of an outside call, park the caller by dialing * * *. A voice prompt will indicate the line number. Then page the person and announce the line number for retrieval. For example: “John, you have a call on Park 1. John, pick up Park 1, please.”