                                                                               
The following summarizes the current period's billing for all telephone, 
cell phone, pager, and dial-in activity for the personnel in your area 
of responsibility as defined in the Corporate G/L Cost Center Hierarchy.


        SERVICE     DESCRIPTION
        ----------  --------------------------------------------- 
        ARCH        Pager service from Arch Communications 
        ATT-CCARD   AT&T Credit Card Calls                    
        ATT-DIALIN  Dial In Access charges using AT&T Dialer
        ATT-GSM     Cellphone charges for AT&T GSM phones 
        ATT-TDMA    Cellphone charges for AT&T Wireless phones
        ATT-TCONF   AT&T Teleconference charges 
        SKYTEL      Pager service from Skytel Communications
        TELEPHONE   Desktop Telephone charges                 
        VERIZON     Cellphone charges for Verizon Wireless phones
                                                                     
   - For billing questions regarding the Telephone and Cellphones contact
     Vy Nguyen by phone (1-3373) or e-mail (Vy.Nguyen@nsc.com).
                                                                     
   - For billing questions regarding Arch and Skytel Pagers contact
     Huyen Nguyen by phone (1-6723) or e-mail (Huyen.Nguyen@nsc.com).
                                                                     
   - For billing questions regarding the AT&T Dial in Access charges 
     contact Kelly Tran by phone (1-3820) or e-mail (Kelly.Tran@nsc.com).
                                                                     
   - For billing questions regarding the AT&T Teleconference charges       
     contact Vy Nguyen by phone (1-3373) or e-mail (Vy.Nguyen@nsc.com).
                                                                          
   - Detail information of these charges is available on the web via your
     LDAP id at http://www-is.nsc.com/nsr/network_comm_manager.html
                                                                          
   - Telephone and AT&T Credit Card summary information by Cost Center 
     is avaliable at http://www-is.nsc.com/nsr/Telephone-Billing/index.html

