33If a key already has a number assigned to it, you can pressOptions and then view, change, or erase the numberassignment.Making calls using one-touch dialingPress and hold a number key (2 through 8) for a few secondsto call the number assigned to it. Your phone finds the phonenumber, displays it briefly, then dials it.You can also enter the number of the 1-touch dialing key(for example, 2) and press Call.Choosing your phone number(NAM selection)Your service provider can set up your phone to have two phonenumbers that are activated in different service areas — forexample, one number for the Dallas area and one numberfor the Chicago area.A number assignment module, or NAM, consists of a phonenumber and network information that the service providerprograms into your phone. When you select a NAM, you’renot only selecting a phone number, you’re also selecting ahome system in which you will not be charged roaming fees.For more information about home systems, see ‘Public systemselection’ on page 35.Both NAMs are not equal. Some features, such as systemselection (see page 35) and network feature setting(see page 28), are available only when the primary NAMis selected.Use Menu 4 5 to select a NAM.Send own numberThis network service allows you to hide your phone numberfrom a person you are calling who has Caller ID. (If for somereason your network prevents phone numbers from beingdisplayed, you may be able to use this feature to show yournumber to the person you are calling.) Contact your serviceprovider for feature codes for showing/hiding your phonenumber.